Subjects -> HEALTH AND SAFETY (Total: 1556 journals)
    - CIVIL DEFENSE (22 journals)
    - DRUG ABUSE AND ALCOHOLISM (86 journals)
    - HEALTH AND SAFETY (728 journals)
    - HEALTH FACILITIES AND ADMINISTRATION (390 journals)
    - OCCUPATIONAL HEALTH AND SAFETY (115 journals)
    - PHYSICAL FITNESS AND HYGIENE (133 journals)
    - WOMEN'S HEALTH (82 journals)

HEALTH AND SAFETY (728 journals)                  1 2 3 4 | Last

Showing 1 - 200 of 203 Journals sorted alphabetically
16 de Abril     Open Access   (Followers: 4)
ACM Transactions on Computing for Healthcare     Hybrid Journal   (Followers: 5)
Acta Informatica Medica     Open Access   (Followers: 3)
Acta Scientiarum. Health Sciences     Open Access   (Followers: 3)
Adultspan Journal     Hybrid Journal   (Followers: 1)
Advances in Child Development and Behavior     Full-text available via subscription   (Followers: 13)
Advances in Public Health     Open Access   (Followers: 33)
Adversity and Resilience Science : Journal of Research and Practice     Hybrid Journal   (Followers: 4)
African Health Sciences     Open Access   (Followers: 7)
African Journal of Health Professions Education     Open Access   (Followers: 7)
Afrimedic Journal     Open Access   (Followers: 3)
Ageing & Society     Hybrid Journal   (Followers: 48)
Air Quality, Atmosphere & Health     Hybrid Journal   (Followers: 9)
AJOB Empirical Bioethics     Hybrid Journal   (Followers: 4)
Akademika     Open Access   (Followers: 1)
American Journal of Family Therapy     Hybrid Journal   (Followers: 9)
American Journal of Health Economics     Full-text available via subscription   (Followers: 22)
American Journal of Health Education     Hybrid Journal   (Followers: 39)
American Journal of Health Promotion     Hybrid Journal   (Followers: 35)
American Journal of Health Sciences     Open Access   (Followers: 13)
American Journal of Health Studies     Full-text available via subscription   (Followers: 17)
American Journal of Preventive Medicine     Hybrid Journal   (Followers: 31)
American Journal of Public Health     Full-text available via subscription   (Followers: 300)
American Journal of Public Health Research     Open Access   (Followers: 32)
Analytic Methods in Accident Research     Hybrid Journal   (Followers: 9)
Annales des Sciences de la Santé     Open Access  
Annali dell'Istituto Superiore di Sanità     Open Access  
Annals of Global Health     Open Access   (Followers: 16)
Annals of Health Law     Open Access   (Followers: 6)
Applied Biosafety     Hybrid Journal   (Followers: 1)
Applied Ergonomics     Hybrid Journal   (Followers: 19)
Apuntes Universitarios     Open Access   (Followers: 1)
Archive of Community Health     Open Access   (Followers: 1)
Archives of Community Medicine and Public Health     Open Access   (Followers: 3)
Archives of Medicine and Health Sciences     Open Access   (Followers: 7)
Archives of Suicide Research     Hybrid Journal   (Followers: 12)
Archivos de Prevención de Riesgos Laborales     Open Access  
Arquivos de Ciências da Saúde     Open Access  
Asia Pacific Journal of Counselling and Psychotherapy     Hybrid Journal   (Followers: 11)
Asia Pacific Journal of Health Management     Full-text available via subscription   (Followers: 6)
Asia-Pacific Journal of Public Health     Hybrid Journal   (Followers: 15)
Asian Journal of Gambling Issues and Public Health     Open Access   (Followers: 5)
Asian Journal of Medicine and Health     Open Access   (Followers: 2)
Atención Primaria     Open Access   (Followers: 2)
Atención Primaria Práctica     Open Access   (Followers: 1)
Australasian Journal of Paramedicine     Open Access   (Followers: 7)
Australian Advanced Aesthetics     Full-text available via subscription   (Followers: 4)
Australian Family Physician     Full-text available via subscription   (Followers: 3)
Australian Indigenous HealthBulletin     Free   (Followers: 5)
Autism & Developmental Language Impairments     Open Access   (Followers: 17)
Bijzijn     Hybrid Journal   (Followers: 1)
Bijzijn XL     Hybrid Journal  
Biomedical Safety & Standards     Full-text available via subscription   (Followers: 7)
Biosafety and Health     Open Access   (Followers: 1)
Biosalud     Open Access   (Followers: 1)
Birat Journal of Health Sciences     Open Access  
BLDE University Journal of Health Sciences     Open Access  
BMC Oral Health     Open Access   (Followers: 7)
BMC Pregnancy and Childbirth     Open Access   (Followers: 24)
BMJ Simulation & Technology Enhanced Learning     Hybrid Journal   (Followers: 14)
Brazilian Journal of Medicine and Human Health     Open Access  
British Journal of Health Psychology     Hybrid Journal   (Followers: 53)
Buletin Penelitian Kesehatan     Open Access   (Followers: 2)
Buletin Penelitian Sistem Kesehatan     Open Access  
Bulletin of the World Health Organization     Open Access   (Followers: 23)
Cadernos de Educação, Saúde e Fisioterapia     Open Access   (Followers: 1)
Cadernos de Saúde     Open Access   (Followers: 1)
Cadernos Saúde Coletiva     Open Access   (Followers: 1)
Cambridge Quarterly of Healthcare Ethics     Hybrid Journal   (Followers: 16)
Canadian Family Physician     Partially Free   (Followers: 13)
Canadian Journal of Community Mental Health     Full-text available via subscription   (Followers: 14)
Canadian Journal of Human Sexuality     Hybrid Journal   (Followers: 2)
Canadian Journal of Public Health     Hybrid Journal   (Followers: 28)
Cannabis and Cannabinoid Research     Hybrid Journal   (Followers: 2)
Carta Comunitaria     Open Access  
Case Reports in Women's Health     Open Access   (Followers: 4)
CASUS : Revista de Investigación y Casos en Salud     Open Access   (Followers: 1)
Central Asian Journal of Global Health     Open Access   (Followers: 2)
CES Medicina     Open Access  
CES Salud Pública     Open Access  
Child and Adolescent Obesity     Open Access   (Followers: 1)
Child's Nervous System     Hybrid Journal  
Childhood Obesity and Nutrition     Open Access   (Followers: 12)
Children     Open Access   (Followers: 2)
CHRISMED Journal of Health and Research     Open Access   (Followers: 3)
Christian Journal for Global Health     Open Access   (Followers: 1)
Ciência & Saúde Coletiva     Open Access   (Followers: 2)
Ciencia & Salud     Open Access   (Followers: 1)
Ciencia & Trabajo     Open Access   (Followers: 2)
Ciencia e Innovación en Salud     Open Access  
Ciencia y Cuidado     Open Access   (Followers: 1)
Ciencia y Salud     Open Access   (Followers: 3)
Ciencia y Salud Virtual     Open Access  
Ciencia, Tecnología y Salud     Open Access   (Followers: 2)
Cities & Health     Hybrid Journal   (Followers: 4)
Clinical and Experimental Health Sciences     Open Access   (Followers: 1)
ClinicoEconomics and Outcomes Research     Open Access   (Followers: 2)
Clocks & Sleep     Open Access   (Followers: 2)
CME     Hybrid Journal   (Followers: 2)
CoDAS     Open Access  
Community Health     Open Access   (Followers: 6)
Conflict and Health     Open Access   (Followers: 8)
Contact (CTC)     Open Access  
Contraception and Reproductive Medicine     Open Access   (Followers: 2)
Cuaderno de investigaciones: semilleros andina     Open Access   (Followers: 3)
Cuadernos de la Escuela de Salud Pública     Open Access  
Current Opinion in Behavioral Sciences     Hybrid Journal   (Followers: 11)
Current Opinion in Environmental Science & Health     Hybrid Journal   (Followers: 1)
Das österreichische Gesundheitswesen ÖKZ     Hybrid Journal   (Followers: 1)
Day Surgery Australia     Full-text available via subscription   (Followers: 2)
Design for Health     Hybrid Journal  
Digital Health     Open Access   (Followers: 10)
Disaster Medicine and Public Health Preparedness     Hybrid Journal   (Followers: 16)
Diversity and Equality in Health and Care     Open Access   (Followers: 9)
Diversity of Research in Health Journal     Open Access  
Dramatherapy     Hybrid Journal   (Followers: 3)
Drogues, santé et société     Open Access   (Followers: 2)
Duazary     Open Access   (Followers: 1)
Düzce Üniversitesi Sağlık Bilimleri Enstitüsü Dergisi / Journal of Duzce University Health Sciences Institute     Open Access  
Early Childhood Research Quarterly     Hybrid Journal   (Followers: 29)
East African Journal of Public Health     Full-text available via subscription   (Followers: 4)
Eating and Weight Disorders - Studies on Anorexia, Bulimia and Obesity     Hybrid Journal   (Followers: 26)
EcoHealth     Hybrid Journal   (Followers: 6)
Education for Health     Open Access   (Followers: 9)
ElectronicHealthcare     Full-text available via subscription   (Followers: 4)
Elsevier Ergonomics Book Series     Full-text available via subscription   (Followers: 5)
Emerging Trends in Drugs, Addictions, and Health     Open Access   (Followers: 1)
Ensaios e Ciência : Ciências Biológicas, Agrárias e da Saúde     Open Access  
Environmental Disease     Open Access   (Followers: 4)
Environmental Sciences Europe     Open Access   (Followers: 2)
Epidemics     Open Access   (Followers: 6)
Epidemiologic Perspectives & Innovations     Open Access   (Followers: 7)
Epidemiology, Biostatistics and Public Health     Open Access   (Followers: 24)
EsSEX : Revista Científica     Open Access   (Followers: 1)
Estudios sociales : Revista de alimentación contemporánea y desarrollo regional     Open Access   (Followers: 1)
Ethics & Human Research     Hybrid Journal   (Followers: 4)
Ethics, Medicine and Public Health     Full-text available via subscription   (Followers: 8)
Ethiopian Journal of Health Development     Open Access   (Followers: 8)
Ethiopian Journal of Health Sciences     Open Access   (Followers: 8)
Ethnicity & Health     Hybrid Journal   (Followers: 16)
Eurasian Journal of Health Technology Assessment     Open Access   (Followers: 1)
EUREKA : Health Sciences     Open Access   (Followers: 3)
European Journal of Health Communication     Open Access   (Followers: 2)
European Journal of Investigation in Health, Psychology and Education     Open Access   (Followers: 6)
European Medical, Health and Pharmaceutical Journal     Open Access   (Followers: 3)
Evaluation & the Health Professions     Hybrid Journal   (Followers: 11)
Evidência - Ciência e Biotecnologia - Interdisciplinar     Open Access  
Expressa Extensão     Open Access  
F&S Reports     Open Access   (Followers: 1)
Face à face     Open Access   (Followers: 1)
Families, Systems, & Health     Full-text available via subscription   (Followers: 10)
Family & Community Health     Hybrid Journal   (Followers: 15)
Family Medicine and Community Health     Open Access   (Followers: 10)
Family Relations     Partially Free   (Followers: 15)
FASEB BioAdvances     Open Access  
Fatigue : Biomedicine, Health & Behavior     Hybrid Journal   (Followers: 2)
Finnish Journal of eHealth and eWelfare : Finjehew     Open Access  
Food and Public Health     Open Access   (Followers: 19)
Food Hydrocolloids for Health     Open Access  
Food Quality and Safety     Open Access   (Followers: 2)
Frontiers in Digital Health     Open Access   (Followers: 3)
Frontiers in Neuroergonomics     Open Access   (Followers: 1)
Frontiers in Public Health     Open Access   (Followers: 9)
Frontiers of Health Services Management     Partially Free   (Followers: 9)
Gaceta Sanitaria     Open Access   (Followers: 3)
Galen Medical Journal     Open Access   (Followers: 1)
Ganesha Journal     Open Access  
Gazi Sağlık Bilimleri Dergisi     Open Access  
Geospatial Health     Open Access   (Followers: 1)
Gestão e Desenvolvimento     Open Access  
Gesundheitsökonomie & Qualitätsmanagement     Hybrid Journal   (Followers: 9)
Giornale Italiano di Health Technology Assessment     Full-text available via subscription  
Global Advances in Health and Medicine     Open Access  
Global Challenges     Open Access  
Global Health : Science and Practice     Open Access   (Followers: 9)
Global Health Annual Review     Open Access   (Followers: 3)
Global Health Journal     Open Access   (Followers: 3)
Global Health Promotion     Hybrid Journal   (Followers: 19)
Global Journal of Health Science     Open Access   (Followers: 12)
Global Journal of Public Health     Open Access   (Followers: 17)
Global Medical & Health Communication     Open Access   (Followers: 2)
Global Mental Health     Open Access   (Followers: 11)
Global Reproductive Health     Open Access   (Followers: 1)
Global Security : Health, Science and Policy     Open Access   (Followers: 1)
Global Transitions     Open Access   (Followers: 1)
Global Transitions Proceedings     Open Access   (Followers: 1)
Globalization and Health     Open Access   (Followers: 9)
Hacia la Promoción de la Salud     Open Access  
Hastane Öncesi Dergisi     Open Access  
Hastings Center Report     Hybrid Journal   (Followers: 7)
HCU Journal     Open Access  
HEADline     Hybrid Journal  
Health & Place     Hybrid Journal   (Followers: 20)
Health & Justice     Open Access   (Followers: 6)
Health : An Interdisciplinary Journal for the Social Study of Health, Illness and Medicine     Hybrid Journal   (Followers: 18)
Health and Human Rights     Open Access   (Followers: 10)
Health and Research Journal     Open Access   (Followers: 2)
Health and Social Care Chaplaincy     Hybrid Journal   (Followers: 11)
Health and Social Work     Hybrid Journal   (Followers: 72)
Health Behavior and Policy Review     Full-text available via subscription   (Followers: 5)

        1 2 3 4 | Last

Similar Journals
Journal Cover
Food Quality and Safety
Number of Followers: 2  

  This is an Open Access Journal Open Access journal
ISSN (Print) 2399-1399 - ISSN (Online) 2399-1402
Published by Oxford University Press Homepage  [415 journals]
  • Corrigendum to: Effect of raspberry extract on wound healing

    • Authors: Lu W; , Xu M, et al.
      Abstract: Food Quality and Safety, Volume 5, 2021, fyab013, https://doi.org/10.1093/fqsafe/fyab013
      PubDate: Tue, 28 Sep 2021 00:00:00 GMT
      DOI: 10.1093/fqsafe/fyab024
      Issue No: Vol. 5 (2021)
       
  • Development of predictive models for egg freshness and shelf-life under
           different storage temperatures

    • Authors: Quan C; , Xi Q, et al.
      Abstract: The objective of the present study was to develop models for egg freshness and shelf-life predictions for the selected evaluation indicators including egg weight, Haugh unit (HU), and albumen height. Experiments were carried out at different storage temperatures for a total period of 29–32 days. All data were collected and fitted in to Arrhenius equation for egg freshness, while the HU data were applied to a probability model for shelf-life prediction. The results showed that egg weight, albumen height, and HU decreased significantly, while albumen pH increased with the extension of storage time. The higher the storage temperature, the faster the egg quality decreased. In addition, the bias factor, accuracy factor, and the standard error of prediction were selected to verify the developed quality models. Maximum rescaled R-square statistic, the Hosmer–Lemeshow goodness-of-fit statistic, and the receiver operating characteristic curve were used to evaluate the goodness-of-fit of the developed probability model for the shelf-life of eggs, which indicated that the presented predictive models can be used to assess egg freshness and predict shelf-life during different storage temperatures.
      PubDate: Tue, 07 Sep 2021 00:00:00 GMT
      DOI: 10.1093/fqsafe/fyab021
      Issue No: Vol. 5 (2021)
       
  • A review: antimicrobial properties of several medicinal plants widely used
           in Traditional Chinese Medicine

    • Authors: Chen K; , Wu W, et al.
      Abstract: Due to the dramatic increase in the use of antibiotics and growing health threat of bacterial resistance to many commonly used antibiotics, many studies have been directed at developing new and effective antibacterial compounds, among which many new, natural, and effective antibacterial compounds discovered from medicinal plants have drawn great interest and raised new hope for treating the challenges of antibiotic resistance. This review aimed to summarize the most important and widely used medicinal plants that were reported to have antibacterial activities. A general literature search from 2010 to 2020 was conducted using different databases, including Science Direct, Web of Science, and PubMed. According to the literature, three medicinal plants with outstanding antibacterial activities, Taraxacum officinale, Coptis Rhizome, and Scutellaria baicalensis, were screened and reviewed by prioritization. The extraction methods, antibacterial activities of different parts of plants or the plant-derived compounds, spectra of antibacterial activities, and toxicity were described, respectively. However, the antibacterial activities of the extracts or pure compounds as reported in the reviewed literature were mostly based on in vitro assays, and moreover, the deeper antibacterial mechanisms have not been elucidated clearly. Therefore, further studies are required in the fields of purification and identification of the antibacterial compounds, its mechanisms of action, and synergistic effects in combination with other antibacterial drugs, which may be helpful in the development of new antibacterial drugs.
      PubDate: Sat, 04 Sep 2021 00:00:00 GMT
      DOI: 10.1093/fqsafe/fyab020
      Issue No: Vol. 5 (2021)
       
  • Integrative analysis of microbiome and metabolome in rats with Gest-Aid
           Plus Oral Liquid supplementation reveals mechanism of its healthcare
           function

    • Authors: Cheng M; , Sun Y, et al.
      Abstract: ObjectiveThis study aimed to elucidate the possible mechanism of Gest-Aid Plus Oral Liquid (GAP) on healthcare function.MethodUltrahigh-performance liquid chromatography–quadrupole time-of-flight mass spectrometry-based metabolomics and 16S rDNA sequencing of gut microbiota were performed on serum and fecal samples of GAP and control rats. Additionally, short-chain fatty acids (SCFAs) and inflammatory cytokines in fecal samples were determined through gas chromatography–mass spectrometry and enzyme-linked immunosorbent assay kits.ResultMetabolomics discovered 41 metabolites, which mainly involved amino acid metabolism, lipid metabolism, coenzyme factors, and vitamin metabolism. Administration of GAP increased abundance of Prevotella_9, Alloprevotella, Blautia, Phascolarctobacterium, Parabacteroides, and Fusicatenibacter, and six SCFAs were increased in the GAP group. Measurement of inflammatory cytokines showed that GAP had an anti-inflammatory effect in rats.ConclusionAdministration of GAP greatly affects the aspartate metabolism and microecology of rats, enhances intestinal motility and gut barrier integrity and anti-inflammation. These findings not only have possible implications for further application of GAP, but also provide a link between the gut microbiome, SCFAs, inflammation and serum metabolites in rats.
      PubDate: Fri, 06 Aug 2021 00:00:00 GMT
      DOI: 10.1093/fqsafe/fyab010
      Issue No: Vol. 5 (2021)
       
  • Quantum dot biosensor combined with antibody and aptamer for tracing
           food-borne pathogens

    • Authors: Sun F; , Zhang J, et al.
      Abstract: Due to the increasing number of food-borne diseases, more attention is being paid to food safety. Food-borne pathogens are the main cause of food-borne diseases, which seriously endanger human health, so it is necessary to detect and control them. Traditional detection methods cannot meet the requirements of rapid detection of food due to many shortcomings, such as being time-consuming, laborious or requiring expensive instrumentation. Quantum dots have become a promising nanotechnology in pathogens tracking and detection because of their excellent optical properties. New biosensor detection methods based on quantum dots are have been gradually developed due to their high sensitivity and high specificity. In this review, we summarize the different characteristics of quantum dots synthesized by carbon, heavy metals and composite materials firstly. Then, attention is paid to the principles, advantages and limitations of the quantum dots biosensor with antibodies and aptamers as recognition elements for recognition and capture of food-borne pathogens. Finally, the great potential of quantum dots in pathogen detection is summarized.
      PubDate: Wed, 28 Jul 2021 00:00:00 GMT
      DOI: 10.1093/fqsafe/fyab019
      Issue No: Vol. 5 (2021)
       
  • Meat juice contributes to the stability of ethanol adaptation in
           Salmonella enterica serovar Enteritidis

    • Authors: He S; , Fong K, et al.
      Abstract: Stability assessment of observed tolerance phenotypes is integral in understanding stress adaptation in food-borne pathogens. Therefore, the current work was carried out to determine whether ethanol adaptation induced by exposure to 5 per cent ethanol for 60 min is a stable phenomenon in Salmonella enterica serovar Enteritidis. The capacity of Salmonella Enteritidis (S. Enteritidis) to maintain the acquired ethanol adaptation in the absence of sublethal ethanol stress was investigated at 37 °C, 25 °C or 4 °C in Luria–Bertani broth and two types of meat juice. It was found that ethanol adaptation was completely reversed within 40 min at 37 °C or within 60 min at 25 °C, but was stable at 4 °C for at least 48 h in the broth assay. Ethanol adaptation was retained in chicken juice during 60-min incubation at 25 °C or 48-h incubation at 4 °C. Moreover, exposure to pork juice stored at either 25 °C or 4 °C significantly (P<0.05) increased the ethanol tolerance of ethanol-adapted cells. Collectively, these findings suggest that ethanol adaptation stability in S. Enteritidis under cold conditions and in meat juices should be taken into account when conducting a comprehensive risk analysis during food processing.
      PubDate: Tue, 27 Jul 2021 00:00:00 GMT
      DOI: 10.1093/fqsafe/fyab017
      Issue No: Vol. 5 (2021)
       
  • Inhibition of Botrytis cinerea and control of gray mold on table grapes by
           calcium propionate

    • Authors: Sun C; , Zhu C, et al.
      Abstract: ObjectivesThe gray mold fungus Botrytis cinerea (B. cinerea) infects a wide range of crops before and after harvest, causing huge losses worldwide. Inhibition mechanisms of B. cinerea in vitro and in plants by calcium propionate (CP), generally recognized as a safe substance, are described in this study.Materials and methodsWild-type and transgenic mutant strains of B. cinerea were used in the study to evaluate the effects of CP on fungal growth and development in vitro. Plant materials including tomato leaves and table grapes were tested for controlling efficiency of CP against gray mold deterioration in vivo.ResultsMycelial growth of B. cinerea was inhibited by CP in a dose-dependent manner with occasional disruption of hyphal tips, causing cellular collapse and efflux of cell contents. Staining with fluorescein diacetate and propidium iodide indicated that CP decreased fungal cell viability. Inhibition efficiency of CP against B. cinerea was enhanced by reducing pH. In contrast, the vel1 mutant, which exhibited deficiency in acid production, was more resistant to CP, suggesting that inhibition of B. cinerea by CP is enhanced by the acidification ability of the fungus itself. Additionally, CP inhibited infection cushion development by germlings of B. cinerea. Infection assays with tomato leaves and table grapes showed that CP inhibited decay development in both host tissues. Moreover, application of CP on grapes 3 days prior to harvest could contribute to management of deterioration caused by spontaneous fungal diseases during storage.ConclusionCP can suppress hyphal growth, inhibit infection cushion development, and reduce the virulence of B. cinerea. CP is thus promising for practical management of gray mold in fruit crops and merits further evaluation.
      PubDate: Wed, 21 Jul 2021 00:00:00 GMT
      DOI: 10.1093/fqsafe/fyab016
      Issue No: Vol. 5 (2021)
       
  • Applications of virus-induced gene silencing for identification of gene
           function in fruit

    • Authors: Liu G; , Li H, et al.
      Abstract: With the development of bioinformatics, it is easy to obtain information and data about thousands of genes, but the determination of the functions of these genes depends on methods for rapid and effective functional identification. Virus-induced gene silencing (VIGS) is a mature method of gene functional identification developed over the last 20 years, which has been widely used in many research fields involving many species. Fruit quality formation is a complex biological process, which is closely related to ripening. Here, we review the progress and contribution of VIGS to our understanding of fruit biology and its advantages and disadvantages in determining gene function.
      PubDate: Mon, 19 Jul 2021 00:00:00 GMT
      DOI: 10.1093/fqsafe/fyab018
      Issue No: Vol. 5 (2021)
       
  • Melatonin in plants: what we know and what we don’t

    • Authors: Zhang Z; , Zhang Y, et al.
      Abstract: Melatonin is an endogenous micromolecular compound of indoleamine with multiple physiological functions in various organisms. In plants, melatonin is involved in growth and development, as well as in responses to biotic and abiotic stresses. Furthermore, melatonin functions in phytohormone-mediated signal transduction pathways. There are multiple melatonin biosynthesis pathways, and the melatonin content in plants is greatly affected by intrinsic genetic characteristics and external environmental factors. Although melatonin biosynthesis has been extensively studied in model plants, it remains uncharacterized in most plants. This article focuses on current knowledge on the biosynthesis, regulation and application of melatonin, particularly for fruit quality and preservation. In addition, it highlights the links between melatonin and other hormones, as well as future research directions.
      PubDate: Sun, 11 Jul 2021 00:00:00 GMT
      DOI: 10.1093/fqsafe/fyab009
      Issue No: Vol. 5 (2021)
       
  • Effect of raspberry extract on wound healing

    • Authors: Lu W; , Xu M, et al.
      Abstract: The main purpose of this study was to investigate the effect of raspberry extract on wound healing and compare it with that of ellagic acid. The elimination of excess free radicals was the key to preventing wound inflammation; cellular antioxidation activity was evaluated using an oxidative stress damage cell model. Cell proliferation ability was measured using the WST-1 assay, and the migration capacity was determined using the wound scratch assay. A mouse wound model was used to verify the effect of raspberry extract on wound healing. The cellular antioxidant activity of the extract ((50.31±3.17) μg/mL) was slightly lower than that of ellagic acid ((44.59±2.38) μg/mL). The results of a cell proliferation assay showed that both raspberry extract and ellagic acid at 5 μg/mL could significantly (P<0.01) promote the proliferation of HaCaT cells. After culturing for 24 h and 48 h, the cell healing rates of the extract were (41.11±0.38) per cent and (68.88±2.51) per cent, respectively, whereas the corresponding rates of ellagic acid were (39.01±2.40) per cent and (70.33±0.89) per cent; hence, there were no significant differences between them (P>0.05). The wound areas of mice fed low, medium, and high doses of raspberry extract for 14 days were 1.66, 1.41, and 1.24 mm2, respectively, which were significantly lower than that of the blank control group, 2.18 mm2 (P<0.05). These findings indicate that raspberry extract and ellagic acid exhibit similar antioxidant capacities and equivalent cell proliferation-promoting capabilities. In the mouse test, raspberry extract effectively promoted a reduction in wound area. This work demonstrates the potential of raspberry extract in wound healing, suggesting a promising application of raspberry resources in the fields of functional foods, cosmetics, and medicine.
      PubDate: Wed, 23 Jun 2021 00:00:00 GMT
      DOI: 10.1093/fqsafe/fyab013
      Issue No: Vol. 5 (2021)
       
  • The role of signal production and transduction in induced resistance of
           harvested fruits and vegetables

    • Authors: Wang B; , Bi Y, et al.
      Abstract: Postharvest diseases are the primary reason causing postharvest loss of fruits and vegetables. Although fungicides show an effective way to control postharvest diseases, the use of fungicides is gradually being restricted due to safety, environmental pollution, and resistance development in the pathogen. Induced resistance is a new strategy to control postharvest diseases by eliciting immune activity in fruits and vegetables with exogenous physical, chemical, and biological elicitors. After being stimulated by elicitors, fruits and vegetables respond immediately against pathogens. This process is actually a continuous signal transduction, including the generation, transduction, and interaction of signal molecules. Each step of response can lead to corresponding physiological functions, and ultimately induce disease resistance by upregulating the expression of disease resistance genes and activating a variety of metabolic pathways. Signal molecules not only mediate defense response alone, but also interact with other signal transduction pathways to regulate the disease resistance response. Among various signal molecules, the second messenger (reactive oxygen species, nitric oxide, calcium ions) and plant hormones (salicylic acid, jasmonic acid, ethylene, and abscisic acid) play an important role in induced resistance. This article summarizes and reviews the research progress of induced resistance in recent years, and expounds the role of the above-mentioned signal molecules in induced resistance of harvested fruits and vegetables, and prospects for future research.
      PubDate: Wed, 23 Jun 2021 00:00:00 GMT
      DOI: 10.1093/fqsafe/fyab011
      Issue No: Vol. 5 (2021)
       
  • A risk scoring system for seafood supply chain breaches and examination of
           freshwater fish imported to Australia

    • Authors: Williams M; Hernandez-Jover M, Williams T, et al.
      Abstract: Legislative changes have altered the way imported edible seafood is inspected in Australia. Greater onus of responsibility has been placed on exporting countries to provide documentary evidence of adherence to internally recognized food safety standards. According to global trade agreements, any additional safety tests applied to freshwater fish imported into Australia must be justified. Therefore, the aim of this study was to develop a risk scoring method to provide justification for identifying countries as ‘Freshwater fish high risk’ and to examine the seafood they export to Australia for seafood supply chain breaches. Scoring was conducted using six predictor variables, identified in the literature as important contributors to seafood supply chain breaches, to achieve the outcome variable, Country considered ‘Freshwater fish high risk’. Sixty-seven fish fillets (9.55 kg) of the same species were examined from the third highest scoring country (Country 20) and 562 (5.6 kg) whole fish from the sixth highest scoring country (Country 22). Country 20 had supply chain breaches of 28 macroscopic yellow cysts in one fillet. Two hundred and thirteen parasites and other supply chain breaches were identified in fish from Country 22, including retained liver (91 per cent), visible mud (11 per cent), a variety of debris (16 per cent) and, depending on the commodity code, these fish were imported to Australia under full intestine (90 per cent), retained gills (89 per cent), and partial intestine (9 per cent). Three serious physical hazards were recovered from the edible portion of three ‘consumer-ready’ fish and snails of Genus Lymnaea and Indoplanorbis were recovered from gill mud also from ‘consumer-ready’ fish. The study showed variable results from the scoring system and vast differences in seafood supply chain breaches between the third and sixth highest scoring countries.
      PubDate: Mon, 14 Jun 2021 00:00:00 GMT
      DOI: 10.1093/fqsafe/fyab004
      Issue No: Vol. 5 (2021)
       
  • Unraveling the acetals as ageing markers of Chinese Highland Qingke Baijiu
           using comprehensive two-dimensional gas chromatography–time-of-flight
           mass spectrometry combined with metabolomics approach

    • Authors: Wang X; , Song X, et al.
      Abstract: ObjectivesThe ageing process has a significant impact on the aroma of Chinese Baijiu, which could strengthen the desirable flavor characteristics and reduce the undesirable ones. The aim of this study was to observe the initiation of meaningful changes in volatile fraction and locate the ageing markers during ageing storage of Chinese Highland Qingke Baijiu.Materials and MethodsSamples of Chinese Qingke Baijiu were aged for 0, 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, and 11 months before analysis. The samples were isolated by liquid–liquid extraction and then analyzed by comprehensive two-dimensional gas chromatography–time-of-flight mass spectrometry. The acquired data were processed by untargeted and targeted metabolomics approach to locate the ageing markers.ResultsThe untargeted metabolomics analysis (hierarchical clustering analysis, HCA) shows that the chemical composition of Qingke Baijiu presents a statistically significant deviation from the reference scenario after 5 months. Subsequently, supervised statistics analysis (orthogonal partial least squares discrimination analysis) was performed to locate the markers, which changed significantly during ageing. Fifteen markers were located, and seven of them were acetals. Notably, 1,1-diethoxy-propane, 1,1-diethoxy-butane, and 1,1-diethoxy-3-methyl-butane are important contributors to the flavor of Chinese Baijiu. The identified markers were applied for the untargeted metabolomics (HCA), and the results revealed that these markers could divide the Qingke Baijiu into two ageing stages, 0–5 months and 6–11 months.ConclusionThe results suggest that it is a valuable tool for monitoring the changes of volatile compounds and locating the age markers in Chinese Baijiu.
      PubDate: Wed, 09 Jun 2021 00:00:00 GMT
      DOI: 10.1093/fqsafe/fyab014
      Issue No: Vol. 5 (2021)
       
  • A novel mitigator of enzymatic browning—hawthorn leaf extract and its
           application in the preservation of fresh-cut potatoes

    • Authors: Qiao L; , Wang H, et al.
      Abstract: ObjectivesThe purpose of this study was to evaluate the antibrowning functions of hawthorn leaf extract on fresh-cut potato and its possible mechanism.Materials and MethodsFresh-cut potatoes were treated with different concentrations (0.01%, 0.05%, and 0.1%) of hawthorn leaf extract and preserved at 4 ℃ for 8 days. The appearance and colour of potato slices were evaluated, along with the content of the phenol, malondialdehyde (MDA), and hydrogen peroxide (H2O2) during cold storage. Meanwhile, the activities of polyphenol oxidase (PPO), peroxidase (POD), phenylalanine ammonia-lyase (PAL), lipoxygenase (LOX), catalase (CAT), superoxide dismutase (SOD), and the antioxidant capacity were determined. Furthermore, the composition of hawthorn leaf extract was analyzed by high-performance liquid chromatography–tandem mass spectrometry (HPLC-MS/MS).ResultsThe addition of hawthorn leaf extract effectively delayed the browning process. It not only enhanced the CAT activity and antioxidant capacity but also reduced the LOX activity and accumulation of MDA and H2O2. Meanwhile, the activities of PPO, POD, and PAL as well as the content of phenol were controlled. Additionally, 25 phenols, 34 flavonoids, and 5 proanthocyanidins were identified through high-performance liquid chromatography–tandem mass spectrometry (HPLC-MS/MS), including caffeic acid, quercetin and catechol.ConclusionHawthorn leaf extract significantly alleviated the browning of fresh-cut potato. It could serve as a natural antibrowning alternative by stabilizing the membrane and modulating reactive oxygen species and redox reactions.
      PubDate: Wed, 09 Jun 2021 00:00:00 GMT
      DOI: 10.1093/fqsafe/fyab015
      Issue No: Vol. 5 (2021)
       
  • Coffee cell walls—composition, influence on cup quality and
           opportunities for coffee improvements

    • Authors: Li Z; , Zhang C, et al.
      Abstract: The coffee beverage is the second most consumed drink worldwide after water. In coffee beans, cell wall storage polysaccharides (CWSPs) represent around 50 per cent of the seed dry mass, mainly consisting of galactomannans and arabinogalactans. These highly abundant structural components largely influence the organoleptic properties of the coffee beverage, mainly due to the complex changes they undergo during the roasting process. From a nutritional point of view, coffee CWSPs are soluble dietary fibers shown to provide numerous health benefits in reducing the risk of human diseases. Due to their influence on coffee quality and their health-promoting benefits, CWSPs have been attracting significant research attention. The importance of cell walls to the coffee industry is not restricted to beans used for beverage production, as several coffee by-products also present high concentrations of cell wall components. These by-products include cherry husks, cherry pulps, parchment skin, silver skin, and spent coffee grounds, which are currently used or have the potential to be utilized either as food ingredients or additives, or for the generation of downstream products such as enzymes, pharmaceuticals, and bioethanol. In addition to their functions during plant development, cell walls also play a role in the plant’s resistance to stresses. Here, we review several aspects of coffee cell walls, including chemical composition, biosynthesis, their function in coffee’s responses to stresses, and their influence on coffee quality. We also propose some potential cell wall–related biotechnological strategies envisaged for coffee improvements.
      PubDate: Sat, 05 Jun 2021 00:00:00 GMT
      DOI: 10.1093/fqsafe/fyab012
      Issue No: Vol. 5 (2021)
       
  • Using endogenous pigments to recolour roasted green tea

    • Authors: Zhu H; , Zhang J, et al.
      Abstract: Roasted green tea exhibits undesirable dark green that can seriously affect sensory quality, market price, and consumer acceptance. The aim of this work was to propose a method of improving the appearance of the roasted green tea. In this study, rehydration with freeze-drying (RFD) was used to recolour the tea leaves by redistributing the endogenous pigments. The results indicated that the colour of the roasted green tea changed from dark green to bright green after the RFD treatment, the values of L* and b* were significantly increased (P<0.05), and the value of a* was significantly decreased (P<0.05). In addition, the RFD treatment making the yellow–green pigments transfer onto the surface of the tea leaves also induced a change in pigment contents, including chlorophylls, carotenoids, and flavonoid glycosides. The well-defined optimum parameters for the rehydration process were moisture content of tea leaves at 35 per cent, water temperature 25 °C, and a standing time of 1.5 h.
      PubDate: Wed, 19 May 2021 00:00:00 GMT
      DOI: 10.1093/fqsafe/fyab006
      Issue No: Vol. 5 (2021)
       
  • Low-temperature combined with high-humidity thawing improves the
           water-holding capacity and biochemical properties of Portunus
           trituberculatus protein

    • Authors: Ling J; , Xuan X, et al.
      Abstract: This study compared the effects of conventional thawing methods (water immersion thawing (WIT, (25±1) °C), natural air thawing (AT, (25±1) °C, relative humidity (RH) (65±2) per cent), refrigerator thawing (RT, 4 °C, RH (80±2) per cent) and low-temperature (LT) combined with high-humidity thawing (LT, –1 °C to 1 °C (LT–1–1), 2–4 °C (LT2–4), 5–7 °C (LT5–7) and 8–10 °C (LT8–10), RH≥95 per cent) on the water-holding capacity, lipid oxidation and biochemical properties of Portunus trituberculatus (P. trituberculatus) myofibrillar protein. The results showed that WIT and AT significantly decreased the water-holding capacity while dramatically increasing lipid oxidation, protein oxidation and degeneration, resulting in serious P. trituberculatus quality deterioration. High humidity was beneficial for P. trituberculatus thawing. The thawing time of P. trituberculatus under the conditions of LT2–4 was only 39.39 per cent of that of conventional air thawing at 4 °C (RT), and the LT2–4 samples not only maintained better water-holding capacity but also had an obviously reduced degree of lipid oxidation, protein oxidation and denaturation. Thawed samples LT2–4 and LT5–7 provided better maintenance of P. trituberculatus quality than the LT–1–1 and LT8–10 samples. The best quality was exhibited after thawing at 2–4 °C. The levels of thiobarbituric acid reacting substances, carbonyl content and surface hydrophobicity observably decreased in these samples, while the total sulfhydryl contents dramatically increased compared to those of conventionally thawed samples, indicating lower lipid oxidation and protein oxidation. Moreover, the Ca2+-ATPase activity of the sample thawed at 2–4 °C (2.06 μmol Pi/mg prot/h) was markedly higher than that of samples subjected to WIT and AT. The product qualities observed after thawing at –1 °C to 1 °C, 5–7 °C and 8–10 °C under LT were comparable to that observed by RT. Considering its thawing efficiency and product quality, LT is a suitable method for the thawing of P. trituberculatus, and the ideal thawing conditions were LT at 2–4 °C.
      PubDate: Wed, 19 May 2021 00:00:00 GMT
      DOI: 10.1093/fqsafe/fyab008
      Issue No: Vol. 5 (2021)
       
  • Effects of decontamination treatment combined with natural chemicals
           and/or ultra-high pressure on the quality and safety of ready-to-eat
           wine-pickled mud snails (Bullacta exarata)

    • Authors: Zou X; , Peng S, et al.
      Abstract: Ready-to-eat wine-pickled mud snails (Bullacta exarata) typically host a large number of microorganisms and are frequently contaminated with pathogenic bacteria during processing, resulting in a higher risk for foodborne illness with consumption. In this study, the decontamination effects of different treatment methods, including the use of ultrasonic cleaning (USC), natural chemicals, and ultra-high pressure (UHP), on the quality and safety of pickled mud snails were investigated by assessing the total viable count (TVC), total volatile base nitrogen (TVB-N) content, thiobarbituric acid-reactive substance (TBARS), and pH value of the products after 12 months of storage at –20 °C. Treatment with 200 W USC for 5 min was the most effective approach for reducing TVC in raw mud snails, with a minimal change in food quality. Natural chemical treatment or UHP treatment significantly inhibited the increase in TVC, pH, and TBARS and TVB-N accumulation compared with the control group; however, their combined treatment had no synergistic effect. In contrast, the combined chemical treatment was more effective in inhibiting changes in the above indices in pickled mud snails than UHP treatment alone or combined chemicals+UHP treatment. In addition, the bacterial diversity of pickled mud snails before and after 12 months of storage at –20 °C was determined using Illumina MiSeq sequencing. Our results indicated that USC combined with natural chemicals can be utilized commercially to maintain the quality and safety of pickled mud snails during storage at –20 °C.
      PubDate: Fri, 07 May 2021 00:00:00 GMT
      DOI: 10.1093/fqsafe/fyab001
      Issue No: Vol. 5 (2021)
       
  • Management strategies for aflatoxin risk mitigation in maize, dairy feeds
           and milk value chains—case study Kenya

    • Authors: Joutsjoki V; Korhonen H.
      Abstract: Widespread aflatoxin contamination of a great number of food and feed crops has important implications on global trade and health. Frequent occurrence of aflatoxin in maize and milk poses serious health risks to consumers because these commodities are staple foods in many African countries. This situation calls for development and implementation of rigorous aflatoxin control measures that encompass all value chains, focusing on farms where food and feed-based commodities prone to aflatoxin contamination are cultivated. Good agricultural practices (GAP) have proven to be an effective technology in mitigation and management of the aflatoxin risk under farm conditions. The prevailing global climate change is shown to increase aflatoxin risk in tropical and subtropical regions. Thus, there is an urgent need to devise and apply novel methods to complement GAP and mitigate aflatoxin contamination in the feed, maize and milk value chains. Also, creation of awareness on aflatoxin management through training of farmers and other stakeholders and enforcement of regular surveillance of aflatoxin in food and feed chains are recommended strategies. This literature review addresses the current situation of aflatoxin occurrence in maize, dairy feeds and milk produced and traded in Kenya and current technologies applied to aflatoxin management at the farm level. Finally, a case study in Kenya on successful application of GAP for mitigation of aflatoxin risk at small-scale farms will be reviewed.
      PubDate: Thu, 29 Apr 2021 00:00:00 GMT
      DOI: 10.1093/fqsafe/fyab005
      Issue No: Vol. 5 (2021)
       
  • Safety assessment of condensed phosphate intake from fishery and processed
           marine food products in Korea with respect to gender, age, and region

    • Authors: Kim H; Jang D, Koo Y, et al.
      Abstract: Condensed phosphates are used as food additives, especially in marine products and meat, to improve food quality. The import and consumption of fishery and processed marine food products in Republic of Korea have reportedly increased by ~5 per cent annually. However, processed marine food products are often intentionally adulterated with excessive amounts of condensed phosphates to increase their weight. Excessive intake of condensed phosphates via consuming processed marine food products can lead to various adverse effects on human health due to anionic imbalance. Herein, we conducted a safety assessment of condensed phosphates in 14 types of fishery and processed marine food products in Korea for the first time. Subgroup analysis of various factors including gender, age, and region was also performed, and the risk level of exposure for each group was estimated. Safety assessments by age and gender indicated that infants were at the highest risk. In the regional safety assessment, Chungnam, the most inland region, showed the lowest risk. For both the general and the high-intake groups (95th percentile) in all classifications, the risk was lower (<20 per cent) than the international standard, and the phosphorus content of the 14 types of processed marine products in Korea was confirmed to be safe for human consumption.
      PubDate: Sat, 24 Apr 2021 00:00:00 GMT
      DOI: 10.1093/fqsafe/fyab003
      Issue No: Vol. 5 (2021)
       
  • Food emulsifier glycerin monostearate aggravates phthalates’ testicular
           toxicity by disrupting tight junctions’ barrier function in rats

    • Authors: Xia L; , Yang M, et al.
      Abstract: ObjectivesThis study aimed to investigate the effect of the widely used food emulsifier glycerin monostearate (GM) on testicular toxicity caused by the mixture of three commonly used phthalate esters (MPEs) in rats, and further to explore the underlying mechanism.Materials and MethodsThirty male Sprague–Dawley rats were randomly divided into three groups. Rats were orally treated with 160 mg/kg/d MPEs in the MPEs group; coinstantaneously treated with 160 mg/kg/d MPEs and 200 mg/kg/d GM in the MPEs + GM group; and treated with the excipient in the control group. The intervention lasted for 5 weeks. Testis weight, epididymis weight, testicular histopathology, and serum testosterone were detected for testicular toxicity evaluation. The testicular ultrastructure, the tight junction proteins zonula occluden (ZO)-1, and claudin were measured for the mechanism exploration.ResultsThe body weight, epididymis, serum testosterone level, and anogenital distance in the MPEs + GM group were significantly decreased compared with control group (P < 0.05); Testicular histopathological observation showed that shed spermatids were observed in the MPEs + GM group. Ultrastructural observation of testicular cells showed that the cristae number was decreased in some mitochondria in the MPEs group, whereas the cristae were fused and disappeared in most mitochondria in the MPEs + GM group. The tight junctions were broken in the MPEs + GM group; meanwhile, the expression of ZO-1 and claudin were altered in the MPEs + GM group (P < 0.01). ConclusionsThe results from this study indicated that GM aggravated MPEs’ testicular toxicity, which might relate to the injured mitochondria and damaged tight junctions in testicular tissue.
      PubDate: Sat, 24 Apr 2021 00:00:00 GMT
      DOI: 10.1093/fqsafe/fyab002
      Issue No: Vol. 5 (2021)
       
  • Metabolomics of ginger based on ultra-performance liquid chromatography
           coupled with quadrupole time-of-flight mass spectrometry technology

    • Authors: Yan H; , Zou D, et al.
      Abstract: ObjectivesDried ginger and ginger are the same type of medicine and food. The differential components of ginger and dried ginger, dried ginger and ginger charcoal were investigated.Materials and MethodsThe experimental materials were divided into three sample groups: the ginger group, dried ginger group, and ginger charcoal group. The ginger group, dried ginger group, and ginger charcoal group were qualitatively analyzed by ultra-performance liquid chromatography coupled with quadrupole time-of-flight mass spectrometry. The data were processed by Marker View Software. Principal component analysis and orthogonal partial least-square discriminant analysis were performed with SIMCA 13.0 Software. The differential components of the ginger and dried ginger groups as well as the dried ginger and ginger charcoal groups with a variable importance in the projection > 2 (P < 0.05) were identified with PeakView 1.2 Software.ResultsTen differential components, including 6-gingerol, 8-gingerol, and 10-gingerol, were identified between the ginger group and dried ginger group; 13 differential components, including 6-shogaol, 10-gingerol, and zingiberone, were identified between the dried ginger group and ginger charcoal group.ConclusionsThe main differential components between the ginger and dried ginger groups and the dried ginger and ginger charcoal groups were gingerols and diphenylheptanes. Based on metabolomics analysis of the chemical composition of ginger’s medicinal materials, effects, and other related factors, it is recommended that 6-gingerol, 6-shogaol, and zingiberone should be used as indicative components for the respective quality evaluation of ginger, dried ginger and ginger charcoal. The results of this study may provide a basis for the reasonable quality evaluation of ginger medicinal materials.
      PubDate: Fri, 23 Apr 2021 00:00:00 GMT
      DOI: 10.1093/fqsafe/fyaa036
      Issue No: Vol. 5 (2021)
       
  • Paper-containing 1-methylcyclopropene treatment suppresses fruit decay of
           fresh Anxi persimmons by enhancing disease resistance

    • Authors: Zeng L; , Shi L, et al.
      Abstract: ObjectivesThe purpose of this work was to evaluate the potential application of papers containing 1-methylcyclopropene (1-MCP) postharvest treatment for suppressing fruit decay of fresh Anxi persimmons and its possible mechanism.Materials and methodsAnxi persimmon fruit were treated with papers containing 1-MCP at the dosage of 1.35 μL/L and stored at 25 ± 1 °C and 85 per cent relative humidity for 35 days. During storage, the fruit decay rate and lignin content were evaluated, and the content of total phenolics, the activities of phenylalanine ammonia lyase (PAL), polyphenol oxidase (PPO), peroxidase (POD), chitinase (CHI), and β-1,3-glucanase (GLU) were determined by spectrophotometry.ResultsThe 1-MCP–treated persimmons displayed a lower fruit decay rate, but higher contents of lignin and total phenolics, higher activities of PAL, PPO, POD, CHI, and GLU.ConclusionsThe treatment with 1-MCP could inhibit the fruit decay of postharvest Anxi persimmons, which might be because 1-MCP enhanced fruit disease resistance by increasing the activities of disease resistance-associated enzymes and retaining higher contents of disease resistance-related substances in postharvest fresh Anxi persimmons. These findings indicate that papers containing 1-MCP at the dosage of 1.35 μL/L have potential application in suppressing fruit decay and extending storage life of postharvest fresh Anxi persimmons.
      PubDate: Thu, 22 Apr 2021 00:00:00 GMT
      DOI: 10.1093/fqsafe/fyab007
      Issue No: Vol. 5 (2021)
       
  • Effect of a combined microwave-assisted drying and air drying on improving
           active nutraceutical compounds, flavor quality, and antioxidant properties
           of Camellia sinensis L. (cv. Longjing 43) flowers

    • Authors: Shi L; , Kim E, et al.
      Abstract: Drying tea flowers into a high-quality product is important to its commodity value. In the present work, a combination of microwave-assisted drying and air drying (MAD-AD) was applied in the processing of fresh tea flowers and its effects on flavor quality, active nutraceutical compounds, and antioxidant capacities were studied. The results showed that compared to air drying and freeze drying tea flowers, the MAD-AD tea flowers had higher amounts of active compounds such as catechins, flavonol glycosides, and triterpenoid saponins, and possessed high antioxidant activities. Moreover, this drying method improved the tea flowers’ color and preserved a more floral fragrance. This combined method could be of interest as an industrial method for drying tea flowers with the benefit of reduced processing time, more reserved active compounds and high quality of products.
      PubDate: Mon, 12 Apr 2021 00:00:00 GMT
      DOI: 10.1093/fqsafe/fyaa040
      Issue No: Vol. 5 (2021)
       
  • Optimization of ultrasonic-assisted freezing of Penaeus chinensis by
           response surface methodology

    • Authors: Ying Y; , Xiang Y, et al.
      Abstract: ObjectivesOptimization of ultrasonic-assisted freezing of Penaeus chinensis by response surface methodology was studied in order to (1) obtain frozen Penaeus chinensis of high quality and (2) provide practical guidance for the application of ultrasonic-assisted freezing in Penaeus chinensis.Materials and MethodsThree independent and major variables were selected, including initial ultrasonic temperature (°C), ultrasonic power (W) and ultrasonic time (s on/2 s off). On the basis of one-factor experiments, 17 groups of experiments were established by response surface methodology according to Box–Behnken design. Using multiple regression analysis the experimental data were fitted into a second-order polynomial equation, which was tested by proper statistical methods.ResultsThe optimal ultrasonic conditions were as follows: initial ultrasonic temperature 0 °C, ultrasonic power 180 W, ultrasonic time 5 s on/2 s off. Under the optimization conditions, the time of passing through maximum ice crystal generation zone was 105.500 s, which was very close to the predictive passage time of 101.541 s. ConclusionsInitial ultrasonic temperature, ultrasonic time and ultrasonic power played an important role in the process of ultrasonic-assisted freezing of Penaeus chinensis. Response surface methodology was used to optimize the three factors in ultrasonic-assisted freezing, which could greatly shorten the time of passing through the maximum ice crystal generation zone and maintain the tissue structure of Penaeus chinensis well.
      PubDate: Thu, 08 Apr 2021 00:00:00 GMT
      DOI: 10.1093/fqsafe/fyaa034
      Issue No: Vol. 5 (2021)
       
  • Formation mechanism of isoprene compounds degraded from carotenoids during
           fermentation of goji wine

    • Authors: Geng J; , Zhao L, et al.
      Abstract: Fermented goji wine as a functional wine is made from yeast fermentation. To our knowledge, fermented goji wine still has a problem with insufficient characteristic aroma. Research has shown that some isoprene compounds with characteristic aromas may improve the aroma of goji wine. Therefore, the present study aimed to investigate the mechanism of isoprene compound production by carotenoid degradation during the fermentation of goji wine. It was found that C1–C6, C5–C6, C6–C7, C7–C8, C8–C9 and C9–C10 were the most easily degraded sites in carotenoids under seven different pretreatment conditions (mechanical treatment, pectinase treatment, adjustment of pH, autoclave treatment, SO2 treatment, oxidation treatment and light treatment). Meanwhile, breaking different sites, different aroma contributions such as woody, rose, fruity and grassy aromas were found. Single-factor simulation experiments of goji wine during the fermentation showed that the metabolites in the fermentation process caused the degradation of carotenoids and most were volatile aroma compounds. These results may help improve the brewing process to enhance the aroma of goji wine.
      PubDate: Thu, 08 Apr 2021 00:00:00 GMT
      DOI: 10.1093/fqsafe/fyaa033
      Issue No: Vol. 5 (2021)
       
  • Delphinidin-3-O-sambubioside: a novel xanthine oxidase inhibitor
           identified from natural anthocyanins

    • Authors: Xie J; , Cui H, et al.
      Abstract: ObjectivesThis study was conducted to investigate the xanthine oxidase (XO) inhibitory activities of 18 monomeric anthocyanins from berry fruits and roselle, and to illustrate the underlying mechanism of the most active anthocyanin delphinidin-3-O-sambubioside.Materials and MethodsEighteen monomeric anthocyanins were prepared and purified in our laboratory. The inhibitory properties of anthocyanins were investigated by in vitro inhibitory activity studies and fluorescence quenching studies; the inhibitory mechanism was explored through kinetic studies, fluorescence quenching studies, circular dichroism analysis and computational docking simulations.ResultsXO inhibitory activities of anthocyanins were related to the structures of B rings and glycosides. Among all the tested anthocyanins, delphinidin-3-O-sambubioside showed the most potent inhibitory activity with an IC50 of 17.1 μM, which was comparable to the positive control allopurinol. Spectroscopic results revealed that delphinidin-3-O-sambubioside could spontaneously interact with XO and induce conformational changes. Computational docking study indicated that delphinidin-3-O-sambubioside could bind to XO with a proper orientation, stably formed π–π interactions and hydrogen bonds with key residues, thus preventing the substrate from entering the active pocket.ConclusionsIn brief, our study identified delphinidin-3-O-sambubioside as a potent XO inhibitor from natural anthocyanins, which is potentially applicable for prevention and treatment of hyperuricemia.
      PubDate: Fri, 02 Apr 2021 00:00:00 GMT
      DOI: 10.1093/fqsafe/fyaa038
      Issue No: Vol. 5 (2021)
       
  • Effect of aluminum stress on the quality of Enteromorpha prolifera based
           on SEM-EDX and FT-IR

    • Authors: Zhou L; , Wang Y, et al.
      Abstract: To clarify the effect of aluminum stress on the quality of Enteromorpha prolifera (E. prolifera) and to explore the mechanism of the combination of aluminum and E. prolifera, we analyzed changes in the nutrients, micromorphology, element distribution, and spectrum of E. prolifera treated with different concentrations of aluminum (0, 0.2, 2.0, and 20.0 μmol·L–1) using scanning electron microscopy-energy dispersive spectroscopy (SEM-EDX) and Fourier-transform infrared spectroscopy (FT-IR). The biomass, protein, dietary fiber, and ash contents of E. prolifera initially increased and then subsequently decreased with an increasing concentration of aluminum. Meanwhile, the total amount of amino acids decreased. Scanning the surface of E. prolifera by SEM-EDX revealed that a high concentration of aluminum damaged the cells of E. prolifera. Additionally, the content of aluminum on the surface of E. prolifera cells increased and the absorption of other elements was also affected. The FT-IR analysis showed that aluminum might combine with the functional groups at the 3408 cm–1, 2928 cm–1, and 1072 cm–1 peaks in E. prolifera and alter the characteristic of the different absorption peaks.
      PubDate: Tue, 30 Mar 2021 00:00:00 GMT
      DOI: 10.1093/fqsafe/fyaa037
      Issue No: Vol. 5 (2021)
       
  • Modification of screen-printed gold electrode with 1,4-dithiothreitol:
           application to sensitive voltammetric determination of Sudan II

    • Authors: Karaboduk K.
      Abstract: ObjectivesThe aim of this study is to investigate the electrochemical behavior of Sudan II (SuII) using a screen-printed gold electrode (SPGE) modified with 1,4-dithiothreitol (DTT) and to determine the amount of Sudan II by voltammetry.Materials and MethodsA DTT-modified screen-printed gold electrode (DTT/SPGE) was fabricated and its application for differential pulse voltammetric (DPV) determination of SuII was reported. Fourier transform infrared spectroscopy (FT-IR), cyclic voltammetry and electrochemical impedance spectroscopy were used for the characterization of the modified electrode. The effects of instrumental and chemical parameters were optimized for the determination of SuII. The fabricated electrode was used for the analysis of SuII in fortified and real samples. High-performance liquid chromatography was preferred as a reference method for the evaluation of the obtained voltammetric results.ResultsThe electrochemical studies and FT-IR demonstrated that the SPGE was modified with DTT. The obtained peak current at DTT/SPGE was 6.67 times higher than that recorded with SPGE. At the optimized conditions of DPV in pH = 2.5 of H2SO4, the oxidation peak current of SuII was proportional to its concentration in range: 0.001–1.500 μmol l–1 with a detection limit of 0.0002 μmol l–1 (S/N = 3). For the analysis of SuII, 101.67%–104.33% of recovery percentage was obtained.ConclusionsA new electrode was successfully improved for the determination of SuII. This highly selective and sensitive electrode supplied the fast determination of SuII in ketchup, chili sauce and salsa dip sauce. In addition, voltammetric and chromatographic results are found to be consistent.
      PubDate: Fri, 19 Mar 2021 00:00:00 GMT
      DOI: 10.1093/fqsafe/fyaa039
      Issue No: Vol. 5 (2021)
       
  • Developing an authentication approach using SPME-GC-IRMS based on
           compound-specific δ 13C analysis of six typical volatiles in wine

    • Authors: Jin X; , Zhang L, et al.
      Abstract: An analytical method using gas chromatography isotope ratio mass spectrometry (GC-IRMS) combined with solid phase micro-extraction (SPME) was developed to measure the δ 13C values of six typical volatiles commonly occurring in wine (isoamyl acetate, 2-octanone, limonene, 2-phenylethanol, ethyl octanoate and ethyl decanoate) for the first time. SPME selected with a divinylbenzene/carboxen/polydimethylsiloxane fiber was combined with the GC-IRMS for pretreatment optimization. The optimized SPME parameters of extraction time, extraction temperature and salt concentration were 40 min, 40 °C and 10%, respectively. The δ 13C values measured by SPME-GC-IRMS were in good agreement with those measured via elemental analyzer (EA)-IRMS and GC-IRMS. The differences range from 0.02 to 0.44‰ with EA-IRMS and from 0 to 0.28‰ with GC-IRMS, indicating the high accuracy of the method. This newly established method measured the precision within 0.30‰ and was successfully validated to discriminate imported real wine samples with identical label but amazing price differences from different importers.
      PubDate: Fri, 19 Mar 2021 00:00:00 GMT
      DOI: 10.1093/fqsafe/fyaa031
      Issue No: Vol. 5 (2021)
       
  • Cumulative damage by nonthermal plasma (NTP) exceeds the defense barrier
           of multiple antibiotic-resistant Staphylococcus aureus: a key to achieve
           complete inactivation

    • Authors: Liao X; , Forghani F, et al.
      Abstract: ObjectivesThe aim of this study was to provide a comprehensive understanding of the nonthermal plasma (NTP)-induced inactivated behaviors on a multiple antibiotic–resistant (MAR) Staphylococcus aureus (S. aureus).Materials and MethodsA dielectric barrier discharge (DBD) NTP system was employed for the inactivation of a MAR S. aureus under various applied powers of 35, 45, and 55 W, and gas distances of 4, 6, and 8 mm. The inactivation kinetics of S. aureus were estimated with linear and nonlinear predictive models. In addition, degradation of carotenoid pigment, peroxidation of fatty acids, oxidation of nucleic acids and proteins, and alteration in gene expression were analyzed after NTP treatment.Results and DiscussionThe computationally simulated results indicated that the densities of various reactive species increased with enhanced applied powers and decreased discharge distances. These species were further transformed into reactive oxidative and nitrogen species in the gas–liquid interphase and liquid phase. The oxidative and nitrosative stress of NTP resulted in severe damage to cellular components and the morphological structure of S. aureus. On the other hand, the plasma reactive species could also induce the sublethal injury of S. aureus through upregulating the general stress response, antioxidative and antinitrosative defensive systems. Once the cumulative damages overrode the stress tolerance of S. aureus, the completed cell death was finally achieved by NTP.ConclusionsThis work infers the possible risk of inducing the repair and resistant capacity of pathogens when the applied NTP parameters are inappropriate, which helps the optimization of NTP process to achieve sufficient inactivation.
      PubDate: Thu, 11 Mar 2021 00:00:00 GMT
      DOI: 10.1093/fqsafe/fyaa041
      Issue No: Vol. 5 (2021)
       
  • Potential development of non-synthetic food additives from orange
           processing by-products—a review.

    • Authors: Dassoff E; Guo J, Liu Y, et al.
      Abstract: Citrus is the largest fruit crop worldwide. Meanwhile, oranges account for 60 per cent of the total, with their main application in juice production. During orange juice production, only about 50 per cent of the fresh orange weight is transformed into juice, with the remaining 50 per cent comprised of residue (peel, pulp, seeds, orange leaves and whole orange fruits that do not reach the quality requirements). With the resulting tons of orange by-products, there has been an initiative to research possible ways to reutilize and revalorize citrus waste. Orange pomace, the by-product from juicing process, is currently used to extract the essential oils for fragrance and flavor, and a majority of the waste is used as cattle feed; however, these applications do not account for all of the waste or capture all of its potential value. Meanwhile, these by-products are put into landfills at the owner’s expense, and contribute to global warming through carbon emissions. On the other hand, orange by-products still contain many useful nutraceutical components, such as dietary fiber and phytochemicals, which could be utilized for value-added ingredients and new product development. Some research approaches in this area include the production of organic fertilizers and biofuels, or the extraction of essential oils, pectins, and antioxidant compounds. There is little information in the literature and in the food industry in terms of utilizing the orange pomace directly or with some simple treatments. Orange pomace may be used for food product development as a ‘clean-label’, non-synthetic preservative, which rationalizes this review.
      PubDate: Thu, 11 Mar 2021 00:00:00 GMT
      DOI: 10.1093/fqsafe/fyaa035
      Issue No: Vol. 5 (2021)
       
  • Assessment of chicken breast shelf life based on bench-top and portable
           near-infrared spectroscopy tools coupled with chemometrics

    • Authors: Lanza I; Conficoni D, Balzan S, et al.
      Abstract: ObjectivesNear-infrared (NIR) spectroscopy is a rapid technique able to assess meat quality even if its capability to determine the shelf life of chicken fresh cuts is still debated, especially for portable devices. The aim of the study was to compare bench-top and portable NIR instruments in discriminating between four chicken breast refrigeration times (RT), coupled with multivariate classifier models.Materials and MethodsNinety-six samples were analysed by both NIR tools at 2, 6, 10 and 14 days post mortem. NIR data were subsequently submitted to partial least squares discriminant analysis (PLS-DA) and canonical discriminant analysis (CDA). The latter was preceded by double feature selection based on Boruta and Stepwise procedures.ResultsPLS-DA sorted moderate separation of RT theses, while shelf life assessment was more accurate on application of Stepwise-CDA. Bench-top tool had better performance than portable one, probably because it captured more informative spectral data as shown by the variable importance in projection (VIP) and restricted pool of Stepwise-CDA predictive scores (SPS).ConclusionsNIR tools coupled with a multivariate model provide deep insight into the physicochemical processes occurring during storage. Spectroscopy showed reliable effectiveness to recognise a 7-day shelf life threshold of breasts, suitable for routine at-line application for screening of meat quality.
      PubDate: Wed, 10 Mar 2021 00:00:00 GMT
      DOI: 10.1093/fqsafe/fyaa032
      Issue No: Vol. 5 (2021)
       
  • Microbiological assessment of street foods at the point of sale in Maputo
           (Mozambique)

    • Authors: Salamandane A; Silva A, Brito L, et al.
      Abstract: ObjectivesThe aim of this study was to assess the microbiological quality and safety of street food sold in the main streets and informal markets of Maputo, the capital of Mozambique.Materials and MethodsFrom 83 different vendors selling different types of foods, 83 samples of ready-to-eat (RTE) street food were analyzed. Mesophiles, Escherichia coli and total coliforms were used as quality and hygiene indicators. Listeria monocytogenes (L. monocytogenes) Salmonella and coagulase-positive staphylococci were used as food safety indicators.ResultsHigh proportions of unsatisfactory food samples were found in both traditional hot (76.7%) and cold (75%) foods. L. monocytogenes and Salmonella were tested negative in this survey. However, when coagulase-positive staphylococci was used as a food safety indicator, approximately 25% (23/83) of the food samples analyzed were classified as unsatisfactory/potentially hazardous.ConclusionsThese results, showing that street food sold in Maputo clearly requires adequate sanitary conditions for its preparation and sale, contribute to the development of good manufacturing practices (GMP) for street food in Maputo, Mozambique. This is the first report on the microbiological quality and safety of street food in Mozambique.
      PubDate: Tue, 09 Feb 2021 00:00:00 GMT
      DOI: 10.1093/fqsafe/fyaa030
      Issue No: Vol. 5 (2021)
       
  • Refrigeration temperature enhanced synergistic interaction of curcumin and
           460 nm light-emitting diode against Staphylococcus saprophyticus at
           neutral pH

    • Authors: Wang Z; , Han L, et al.
      Abstract: ObjectivesAs considered highly resistant to antibiotics like mecillinam, the rise of Staphylococcus saprophyticus (S. saprophyticus) contamination of fresh foods and food processing environments necessitates the development of a new antimicrobial approach for food safety control. This study aimed to investigate the synergistic effect of food-grade curcumin (CUR) and blue light-emitting diode (LED) on S. saprophyticus.Materials and MethodsS. saprophyticus was subjected to the synergistic treatment at 4 and 25 °C. The influence of parameters, including CUR concentration, light dose, and pH incubation time on the inactivation of S. saprophyticus was characterized through plate counting method.Results: The combined treatment of CUR and blue light irradiation significantly (P < 0.05) reduced bacterial counts and the antimicrobial effect was in a CUR concentration and light dose-dependent manner. Moreover, refrigeration temperature (4 °C) significantly (P < 0.05) enhanced the antibacterial effect at neutral pH condition (6.2–7.2), resulting in approximately 6.0 log reductions. Under acidic condition (pH 2.2–5.2), there was no significant difference in bacterial population reduction between treatments at both temperatures.ConclusionsThese findings proposed that synergistic interaction of CUR and 460 nm LED under refrigerated temperature could enhance the inactivation of S. saprophyticus at neutral pH condition.
      PubDate: Sat, 06 Feb 2021 00:00:00 GMT
      DOI: 10.1093/fqsafe/fyaa029
      Issue No: Vol. 5 (2021)
       
 
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