Subjects -> FOOD AND FOOD INDUSTRIES (Total: 387 journals)
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    - FOOD AND FOOD INDUSTRIES (273 journals)

FOOD AND FOOD INDUSTRIES (273 journals)                  1 2     

Showing 1 - 62 of 62 Journals sorted alphabetically
Acta Alimentaria     Full-text available via subscription   (Followers: 7)
Acta Universitatis Cibiniensis. Series E: Food Technology     Open Access   (Followers: 2)
Acta Universitatis Sapientiae, Alimentaria     Open Access   (Followers: 1)
adhäsion KLEBEN & DICHTEN     Hybrid Journal   (Followers: 9)
Advances in Food and Nutrition Research     Full-text available via subscription   (Followers: 68)
Advances in Nutrition     Hybrid Journal   (Followers: 57)
African Journal of Drug and Alcohol Studies     Full-text available via subscription   (Followers: 6)
African Journal of Food Science     Open Access   (Followers: 9)
African Journal of Food, Agriculture, Nutrition and Development     Open Access   (Followers: 23)
Agricultural and Food Science     Open Access   (Followers: 22)
Agriculture & Food Security     Open Access   (Followers: 16)
Agriculture and Food Sciences Research     Open Access   (Followers: 11)
Agro-Science     Full-text available via subscription   (Followers: 2)
Agroecology and Sustainable Food Systems     Hybrid Journal   (Followers: 18)
Agrosearch     Open Access   (Followers: 2)
Alimentos e Nutrição     Open Access   (Followers: 1)
Alimentos Hoy     Open Access   (Followers: 1)
American Journal of Food and Nutrition     Open Access   (Followers: 55)
American Journal of Food Science and Technology     Open Access   (Followers: 11)
American Journal of Food Technology     Open Access   (Followers: 9)
Amerta Nutrition     Open Access  
Amino Acids     Hybrid Journal   (Followers: 7)
Animal Production     Open Access   (Followers: 5)
Animal Production Science     Hybrid Journal   (Followers: 2)
Annual Review of Food Science and Technology     Full-text available via subscription   (Followers: 15)
Anthropology of food     Open Access   (Followers: 14)
Applied Food Biotechnology     Open Access   (Followers: 4)
Arquivos Brasileiros de Alimentação     Open Access  
Asian Food Science Journal     Open Access   (Followers: 2)
Asian Journal of Animal and Veterinary Advances     Open Access   (Followers: 8)
Asian Journal of Cell Biology     Open Access   (Followers: 6)
Asian Journal of Clinical Nutrition     Open Access   (Followers: 14)
Asian Journal of Crop Science     Open Access   (Followers: 3)
Asian Plant Research Journal     Open Access   (Followers: 1)
Bangladesh Rice Journal     Open Access   (Followers: 2)
Biotechnology and Genetic Engineering Reviews     Hybrid Journal   (Followers: 12)
Boletim de Indústria Animal     Open Access  
Brazilian Journal of Food Technology     Open Access   (Followers: 3)
Bulletin of University of Agricultural Sciences and Veterinary Medicine Cluj-Napoca : Food Science and Technology     Open Access  
Canadian Food Studies / La Revue canadienne des études sur l'alimentation     Open Access  
Cerâmica     Open Access   (Followers: 5)
Chemical Research in Chinese Universities     Hybrid Journal   (Followers: 3)
Ciência e Agrotecnologia     Open Access  
COCOS : The Journal of the Coconut Research Institute of Sri Lanka     Open Access   (Followers: 1)
Cogent Food & Agriculture     Open Access   (Followers: 3)
Comprehensive Reviews in Food Science and Food Safety     Hybrid Journal   (Followers: 7)
Critical Reviews in Food Science and Nutrition     Hybrid Journal   (Followers: 31)
Cuizine: The Journal of Canadian Food Cultures / Cuizine : revue des cultures culinaires au Canada     Open Access   (Followers: 3)
Culture, Agriculture, Food and Environment     Hybrid Journal   (Followers: 16)
Culture, Agriculture, Food and Environment     Hybrid Journal   (Followers: 8)
Current Botany     Open Access   (Followers: 1)
Current Opinion in Food Science     Hybrid Journal   (Followers: 6)
Current Research in Dairy Sciences     Open Access   (Followers: 6)
Current Research in Microbiology     Open Access   (Followers: 25)
Current Research in Nutrition and Food Science     Open Access   (Followers: 5)
CyTA - Journal of Food     Open Access   (Followers: 1)
Detection     Open Access   (Followers: 4)
Developments in Food Science     Full-text available via subscription   (Followers: 2)
EFSA Journal     Open Access   (Followers: 6)
Emirates Journal of Food and Agriculture     Open Access   (Followers: 2)
Engineering in Agriculture, Environment and Food     Hybrid Journal  
Enzyme Research     Open Access   (Followers: 5)
Estudios sociales : Revista de alimentación contemporánea y desarrollo regional     Open Access  
European Food Research and Technology     Hybrid Journal   (Followers: 9)
European Journal of Nutrition & Food Safety     Open Access   (Followers: 1)
Flavour     Open Access   (Followers: 3)
Flavour and Fragrance Journal     Hybrid Journal   (Followers: 4)
Focusing on Modern Food Industry     Open Access   (Followers: 2)
Food & Function     Full-text available via subscription   (Followers: 9)
Food & Nutrition Research     Open Access   (Followers: 32)
Food Additives & Contaminants Part A     Hybrid Journal   (Followers: 10)
Food Additives and Contaminants: Part B: Surveillance     Hybrid Journal   (Followers: 3)
Food Analytical Methods     Hybrid Journal   (Followers: 3)
Food and Applied Bioscience Journal     Open Access   (Followers: 2)
Food and Bioprocess Technology     Hybrid Journal   (Followers: 4)
Food and Bioproducts Processing     Hybrid Journal   (Followers: 5)
Food and Chemical Toxicology     Hybrid Journal   (Followers: 23)
Food and Energy Security     Open Access   (Followers: 6)
Food and Environment Safety     Open Access   (Followers: 1)
Food and Nutrition Bulletin     Hybrid Journal   (Followers: 6)
Food and Nutrition Sciences     Open Access   (Followers: 15)
Food and Public Health     Open Access   (Followers: 17)
Food and Waterborne Parasitology     Open Access  
Food Biology     Open Access   (Followers: 1)
Food Biophysics     Hybrid Journal   (Followers: 4)
Food Bioscience     Hybrid Journal   (Followers: 2)
Food Biotechnology     Hybrid Journal   (Followers: 8)
Food Chain     Full-text available via subscription   (Followers: 1)
Food Chemistry     Hybrid Journal   (Followers: 22)
Food Chemistry : X     Open Access  
Food Control     Hybrid Journal   (Followers: 10)
Food Digestion     Hybrid Journal   (Followers: 5)
Food Economics     Hybrid Journal   (Followers: 2)
Food Ethics     Hybrid Journal   (Followers: 1)
Food Hydrocolloids     Hybrid Journal   (Followers: 5)
Food In     Open Access  
Food Manufacturing Africa     Full-text available via subscription  
Food Microbiology     Hybrid Journal   (Followers: 21)
Food New Zealand     Full-text available via subscription   (Followers: 4)
Food Packaging and Shelf Life     Hybrid Journal   (Followers: 4)
Food Processing     Full-text available via subscription   (Followers: 7)
Food Quality and Preference     Hybrid Journal   (Followers: 7)
Food Quality and Safety     Open Access   (Followers: 1)
Food Research International     Hybrid Journal   (Followers: 10)
Food Reviews International     Hybrid Journal   (Followers: 4)
Food Science & Nutrition     Open Access   (Followers: 58)
Food Science and Biotechnology     Hybrid Journal   (Followers: 10)
Food Science and Human Wellness     Open Access   (Followers: 5)
Food Science and Quality Management     Open Access   (Followers: 9)
Food Science and Technology     Open Access   (Followers: 3)
Food Science and Technology (Campinas)     Open Access   (Followers: 1)
Food Science and Technology International     Hybrid Journal   (Followers: 6)
Food Security     Open Access   (Followers: 11)
Food Structure     Hybrid Journal   (Followers: 3)
Food Technology     Full-text available via subscription   (Followers: 9)
Food Technology and Biotechnology     Open Access   (Followers: 1)
Foodborne Pathogens and Disease     Hybrid Journal   (Followers: 13)
Foodnews     Partially Free   (Followers: 2)
Foods     Open Access  
Frontiers in Sustainable Food Systems     Open Access  
Future of Food : Journal on Food, Agriculture and Society     Open Access   (Followers: 15)
Gastroia : Journal of Gastronomy And Travel Research     Open Access   (Followers: 1)
Gastronomica     Full-text available via subscription   (Followers: 11)
Gıda Dergisi     Open Access  
Global Food History     Hybrid Journal  
Global Food Security     Hybrid Journal   (Followers: 1)
GM Crops and Food: Biotechnology in Agriculture and the Food Chain     Full-text available via subscription   (Followers: 3)
Grasas y Aceites     Open Access  
Habitat     Open Access  
Harran Tarım ve Gıda Bilimleri Dergisi     Open Access   (Followers: 1)
Indonesian Food and Nutrition Progress     Open Access  
Indonesian Food Science & Technology Journal     Open Access   (Followers: 1)
INNOTEC : Revista del Laboratorio Tecnológico del Uruguay     Open Access  
Innovative Food Science & Emerging Technologies     Hybrid Journal   (Followers: 5)
International Journal of Agriculture, Environment and Food Sciences     Open Access   (Followers: 2)
International Journal of Dairy Science     Open Access   (Followers: 6)
International Journal of Food Contamination     Open Access  
International Journal of Food Engineering     Hybrid Journal   (Followers: 3)
International Journal of Food Engineering Research     Open Access  
International Journal of Food Microbiology     Hybrid Journal   (Followers: 20)
International Journal of Food Properties     Open Access   (Followers: 2)
International Journal of Food Safety, Nutrition and Public Health     Hybrid Journal   (Followers: 22)
International Journal of Food Science     Open Access   (Followers: 5)
International Journal of Food Science & Technology     Hybrid Journal   (Followers: 7)
International Journal of Food Science and Nutrition Engineering     Open Access   (Followers: 8)
International Journal of Gastronomy and Food Science     Open Access   (Followers: 6)
International Journal of Latest Trends in Agriculture and Food Sciences     Open Access   (Followers: 5)
International Journal of Meat Science     Open Access  
International Journal of Poultry Science     Open Access   (Followers: 6)
International Journal on Food System Dynamics     Open Access  
ISABB Journal of Food and Agricultural Sciences     Open Access   (Followers: 1)
Italian Journal of Food Safety     Open Access   (Followers: 1)
Italian Journal of Food Science     Open Access   (Followers: 3)
itepa : Jurnal Ilmu dan Teknologi Pangan     Open Access  
JOT Journal für Oberflächentechnik     Hybrid Journal   (Followers: 1)
Journal für Verbraucherschutz und Lebensmittelsicherheit     Hybrid Journal  
Journal of Acupuncture and Herbs     Open Access   (Followers: 3)
Journal of Agricultural & Food Industrial Organization     Hybrid Journal  
Journal of Agriculture and Food Sciences     Full-text available via subscription   (Followers: 2)
Journal of Agriculture and Natural Resources     Open Access   (Followers: 1)
Journal of Agriculture, Food Systems, and Community Development     Open Access  
Journal of AOAC International     Full-text available via subscription   (Followers: 8)
Journal of Applied Botany and Food Quality     Open Access   (Followers: 5)
Journal of Aquatic Food Product Technology     Hybrid Journal   (Followers: 4)
Journal of Berry Research     Hybrid Journal   (Followers: 1)
Journal of Culinary Science & Technology     Hybrid Journal   (Followers: 1)
Journal of Environmental Health Science & Engineering     Open Access   (Followers: 1)
Journal of Ethnic Foods     Open Access   (Followers: 1)
Journal of Excipients and Food Chemicals     Open Access   (Followers: 1)
Journal of Fisheries and Aquatic Science     Open Access   (Followers: 6)
Journal of Food and Dairy Technology     Open Access  
Journal of Food and Drug Analysis     Open Access  
Journal of Food and Pharmaceutical Sciences     Open Access   (Followers: 2)
Journal of Food Biochemistry     Hybrid Journal   (Followers: 6)
Journal of Food Chemistry and Nutrition     Open Access   (Followers: 5)
Journal of Food Composition and Analysis     Hybrid Journal   (Followers: 3)
Journal of Food Engineering     Hybrid Journal   (Followers: 6)
Journal of Food Health and Bioenvironmental Science     Open Access  
Journal of Food Lipids     Hybrid Journal  
Journal of Food Measurement and Characterization     Hybrid Journal  
Journal of Food Microbiology     Open Access   (Followers: 9)
Journal of Food Process Engineering     Hybrid Journal   (Followers: 4)
Journal of Food Processing & Technology     Open Access   (Followers: 2)
Journal of Food Processing and Preservation     Hybrid Journal   (Followers: 3)
Journal of Food Products Marketing     Hybrid Journal   (Followers: 2)
Journal of Food Protection(R)     Full-text available via subscription   (Followers: 7)
Journal of Food Quality     Hybrid Journal   (Followers: 8)
Journal of Food Research     Open Access   (Followers: 3)
Journal of Food Safety     Hybrid Journal   (Followers: 14)
Journal of Food Science     Hybrid Journal   (Followers: 12)
Journal of Food Science and Technology     Hybrid Journal   (Followers: 6)
Journal of Food Science and Technology Nepal     Open Access  
Journal of Food Science Education     Hybrid Journal   (Followers: 4)
Journal of Food Security     Open Access   (Followers: 6)
Journal of Food Security and Agriculture     Open Access  
Journal of Food Studies     Open Access   (Followers: 5)
Journal of Food Technology, Siam University     Open Access  
Journal of Foodservice     Hybrid Journal   (Followers: 1)
Journal of Functional Foods     Hybrid Journal   (Followers: 3)
Journal of Gastronomy, Hospitality and Travel     Open Access  

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Similar Journals
Journal Cover
Food Analytical Methods
Journal Prestige (SJR): 0.662
Citation Impact (citeScore): 2
Number of Followers: 3  
 
  Hybrid Journal Hybrid journal (It can contain Open Access articles)
ISSN (Print) 1936-976X - ISSN (Online) 1936-9751
Published by Springer-Verlag Homepage  [2570 journals]
  • Rapid Scanning of the Origin and Antioxidant Potential of Chilean Native
           Honey Through Infrared Spectroscopy and Chemometrics
    • Abstract: Abstract Antioxidant compounds have the ability to trap free radicals; in honey, this capacity is related to the botanical origin of the sample, and therefore, there has been a growing interest in verifying the floral origin of beehive products and its relation with the polyphenolic compounds with potential antioxidant activity. A FTIR spectrum has been use to discriminate floral origin in Chilean monofloral samples and to predict their antioxidant capacity. Forty-nine honey samples from different geographical zones and botanical origin were classified according to melissopalynology analysis, and total phenolic and flavonoid contents were quantified by spectrophotometric methods. Discriminant analysis showed that Quillay (Quillaja saponaria), Corcolén (Azara petiolaris), and Tebo (Retanilla trinervia) honeys showed similarities related to their common geographical origin, while Ulmo (Eucryphia cordifolia) presents a differentiate behavior. The FTIR spectra were able to predict phenolic and flavonoid content, establishing the potential of spectroscopic tools for quality control in Chilean beehive industry.
      PubDate: 2019-03-21
       
  • Assessing the Feasibility of a Miniaturized Near-Infrared Spectrometer in
           Determining Quality Attributes of San Marzano Tomato
    • Abstract: Abstract The paper aimed to assess the feasibility of using a miniature near-infrared (NIR) spectrometer to determine quality attributes of tomato fruits. To reach this objective, a total of 300 tomato fruits of San Marzano variety coming from two different fields, cropped under two different regimes (integrated and organic), were collected and analyzed using a handheld spectrometer (MicroNIR 1700 by Viavi Solutions® working between 908 and 1650 nm). Simultaneously, several quality attributes were determined using reference methods: fresh weight, pH, dry matter, chromatic values, electrical conductivity, titratable acidity, and soluble solid content. Combining the spectra with chemical attributes, it was possible to understand that the best way for acquiring NIR data on tomato fruits is scanning the whole equatorial area, due to fruit heterogeneous internal structure. Moreover, after a proper data pre-processing, accurate predictive models were obtained using partial least square (PLS) regression to estimate physico-chemical properties of tomato in a rapid and non-destructive way. An impact of this comprehensive study is the possibility of determining tomato chemical attributes in real time, leading to a high-quality San Marzano tomato according to the Protected Designation of Origin (PDO) legislation.
      PubDate: 2019-03-07
       
  • Development of a Sensitive Monoclonal Antibody–Based Indirect
           Competitive Enzyme-Linked Immunosorbent Assay for the Determination of
           Monensin in Edible Chicken Tissues
    • Abstract: Abstract To monitor monensin (MON) residues in chicken tissues, a monoclonal antibody (mAb)–based indirect competitive enzyme-linked immunosorbent assay (ic-ELISA) was developed in this study. The haptenMON was obtained by adding hydrochloric acid to a MON salt, and then was coupled with carrier protein. After the inoculation of female Balb/c mice and cell fusions, one cell line, MON/4C9, was obtained. The MON/4C9 antibody exhibited the ability to specifically recognize MON with IC50 1.28 μg L−1.Based on this mAb, an optimized ic-ELISA protocol was performed using only methanol-water (8:2, v/v) in chicken tissue samples. The limits of detection and the limits of quantification of MON in various sample matrices varied from 0.38 to 1.01 μg kg−1. The recoveries ranged from 71.9 to 116.9% in chicken tissues, and the intra- and inter-assay CVs were all less than 18%. Moreover, the developed method also exhibited a positive correlation with the results of HPLC-MS conducted on the samples. These results suggest that the prepared mAb and the developed ic-ELISA method will be a useful tool for detecting MON in chicken tissues.
      PubDate: 2019-03-05
       
  • Simultaneous Determination of Isofetamid and Its Two Metabolites in Fruits
           and Vegetables Using Ultra-Performance Liquid Chromatography with Tandem
           Mass Spectrometry
    • Abstract: Abstract In this paper, an efficient analytical method for the simultaneous determination of a new fungicide (isofetamid) and its two metabolites in fruits and vegetables was developed using the QuEChERS (Quick, Easy, Cheap, Effective, Rugged, and Safe) pretreatment method and ultra-performance liquid chromatography-tandem mass spectrometry. The three compounds were extracted with acetonitrile and cleaned up using primary secondary amine, octadecylsilane, and graphitized carbon black. The three analytes were well separated with good specificity using an electrospray ionization source in positive mode within 5.0 min. The mean recoveries in apple, strawberry, grape, tomato, cucumber, and lettuce for the three target compounds at different levels ranged from 74 to 107%, with relative standard deviations lower than 12.3%. The method showed excellent linearity (R2 ≥ 0.9946) for the three compounds. The limits of quantification of isofetamid and its metabolites were 1 μg kg−1 in apple, tomato, and cucumber and 100 μg kg−1 in strawberry, grape, and lettuce. The proposed method was successfully applied to a residue dynamic experiment, and it can be considered a strong alternative method to monitor the residues of isofetamid and its metabolites simultaneously in fruits and vegetables.
      PubDate: 2019-03-05
       
  • Simultaneous Determination of Cyclitols and Sugars Following a
           Comprehensive Investigation of 40 Plants
    • Abstract: Abstract Due to the important features of widely unexplored cyclitols, a comprehensive qualitative and quantitative study is needed. Moreover, measuring the possible available amounts of identified components in plant material represents a stringent need, due to their importance in phytomedicine and their use in food. The purpose of this study was to realize an extended investigation mainly of cyclitols, but of sugars and sugar alcohols as well, from natural sources. Thus, 17 target compounds (7 cyclitols and 2 sugar alcohols and 8 sugars) extracted from medicinal and edible plants are reported. All detected components were simultaneous separated in just one chromatographic run, using a single GC column. A number of 52 sources coming from 40 species were studied. Thus, we report 37 new sources of cyclitols. Moreover, almost for all cyclitols, the richest source was not investigated previously. Therefore, the obtained results can represent a valuable material for food, pharmaceutical, medical, or cosmetic industry interested in the use of cyclitols.
      PubDate: 2019-03-05
       
  • Aflatoxin B 1 Determination in Peanuts by Magnetic
           Nanoparticle–Based Immunofluorescence Assay
    • Abstract: Abstract A sensitive immunofluorescence assay for rapid AFB1 determination was developed. Polyclonal anti-AFB1 antibody was immobilized onto magnetic nanoparticles (MNPs). The optimal amount of immobilized antibody was found—40 μg antibody per 1 mg MNPs. The conjugate of AFB1 with bovine serum albumin (BSA) and fluorescein isothiocyanate was prepared. UV-Vis and fluorescence spectrophotometric analyses of the obtained conjugate proved the successful conjugate formation. Optimal amount of MNPs with immobilized antibody (0.25 mg) and the optimal concentration of fluorescent conjugate of AFB1 (28 μg/mL) were established. A competitive assay of AFB1 was performed. The toxin solubility and stability were optimal for the assay when using buffer solution with 10% methanol. It was found that the sensitivity of the developed AFB1 assay was significantly higher with 0.1% BSA stabilizing AFB1 solutions. The linear range of the proposed method was 2–100 pg/mL. The immunoassay was applied for determination of AFB1 in spiked peanuts.
      PubDate: 2019-03-04
       
  • Isotope Dilution LC-MS/MS Method for Glycine Betaine in Manila Clam (
           Tapes philippinarum )
    • Abstract: Abstract Glycine betaine (GB) is a natural compound with demonstrated metabolic functions in mammals and beneficial effects on the human body: it protects cells under osmotic stress, as an organic osmolyte, and acts as a methylating agent in several vital biochemical pathways. The main dietary sources of GB are vegetables, such as cereals, spinach, chard and beetroot, above all; shellfish is one of the richest animal sources. A simple method for the quantification of GB in the edible portion of Manila clams (Tapes philippinarum) was setup, using ultra-performance liquid chromatography coupled to tandem mass spectrometry (UHPLC-MS/MS). Isotope-labelled internal standards were used during sample extraction, in order to ensure an accurate quantification. The method was successfully validated following the Commission Decision 657/2002/EC as a guideline; since GB is an endogenous compound, present in very high concentrations in the target matrix, appropriate adjustments were taken. The method developed reported very satisfying performances in terms of linearity, trueness and precision; moreover, its applicability was demonstrated on commercial pools of Manila clams.
      PubDate: 2019-03-02
       
  • A Turn-on Biosensor-Based Aptamer-Mediated Carbon Quantum Dots
           Nanoaggregate for Acetamiprid Detection in Complex Samples
    • Abstract: In this paper, we developed a new biosensor-based on aptamer-mediated carbon quantum dots (apt-CQDs) nanoaggregate for acetamiprid detection. The acetamiprid aptamer, 5′- and its complementary DNA were labeled on CQDs, respectively. The hybridization of aptamer and its complementary DNA triggered the formation of nanoaggregate of CQDs, leading to the fluorescence quenching of the CQDs. Upon addition of acetamiprid, specific recognition of acetamiprid caused the release of the cDNA-CQDs and the fluorescence intensity recovered which was linearly related to the concentration of acetamiprid. The sensor provided a linear range from 0.2 to 20 ng/L for acetamiprid with a detection limit of 0.04 ng/L in an aqueous buffer. The same linear range was obtained in spiked human serum samples and lettuce samples with similar detection limits (0.15 and 0.11 ng/L), demonstrating high robustness of the sensor in a complex sample matrix. The as-prepared biosensor was used to monitor acetamiprid level in real samples with recovery ranged from 86 to 107%, and RSDs ranged from 1.3–6.9% (n = 3). The proposed study not only provided a simple method through CQDs nanoaggregate and also provided a turn-on detection mode for acetamiprid in real samples with high signal-to-noise ratios. Graphical abstract Fabrication of CQDs and principle for detection of acetamiprid by CQDs nanoaggregates.
      PubDate: 2019-03-01
       
  • Extensive Validation of Gas Chromatographic Method for Determination of
           Esters in Wines Using Monolithic Materials as Preconcentration Step
    • Abstract: Abstract A comprehensive validation of a quantitative method is a critical issue for food analysis, which requires reliable estimation of uncertainties influencing measurements. Esters as important contributors to fruity aroma generally affect quality of wine and its organoleptic features. In this study, a full validation of the method developed for quantification of esters with uncommon silica monolithic discs and gas chromatographic analysis is presented. Two types of sorbent modification and a few desorption solvents were tested for ester removal from wine samples. Uncertainty contributions from mass balance tolerance, purity of chemicals, volume measurements, calibration curve deviation and extraction procedure were included in the calculation of the combined uncertainty. The expanded uncertainty of ester determination ranged from 15 to 37% and was mainly affected by uncertainty of calibration curve. The proposed method provided a limit of detection and a limit of quantification of 0.005–0.168 μg/L and 0.018–0.560 μg/L, respectively. Additional measurements revealed a recovery range of 70–111%, average reproducibility of instrument response less than 4%, and repeatability of the method below 16% for most of esters.
      PubDate: 2019-03-01
       
  • Development of an Upconversion Luminescence Nanoparticles–Based
           Immunochromatographic Assay for the Rapid Detection of Dexamethasone in
           Animal Tissue
    • Abstract: Abstract Dexamethasone has been illegally used as a growth-promoting agent to obtain an economic benefit from increased muscle development. An immunochromatographic assay was developed for the quantitative detection of dexamethasone using a probe based on upconversion luminescence nanoparticles. Lanthanide-doped upconversion nanoparticles were synthesized in a system comprising water and ethylene glycol. Various parameters, including the immunoreaction time, the structure of the coating hapten, and the type and concentration of surfactant, were optimized. Based on the optimal conditions, the assay exhibits good dynamic linear detection in the range of 0.05–5 ng/mL with an IC50 of 0.58 ng/mL. The detection limits for dexamethasone in tissue are 0.3 μg/kg. The assay worked well using a 30% methanol extraction solution, giving an average recovery of 84.5%. The assay strip can quantitate on-site using a portable upconversion luminescence reader with a cumulative analysis time of only 10 min, and its fluorescence decay after 6 months is < 25%.
      PubDate: 2019-03-01
       
  • LC-MS/MS Determination of Mono-Glutamate Folates and Folic Acid in Beer
    • Abstract: Abstract A reliable LC-MS/MS method was developed for determination of folates in beer. Clean-up steps and chromatographic conditions were optimized to remove interferences and decrease the matrix effect. The work showed that an immuno-affinity column designed for folic acid (FA) was also suitable for the oxidized forms 10-formylfolic acid (10-HCO-FA) and 7,8-dihydrofolic acid (DHF), obtaining clean extract and improving the limit of detection. For the other vitamer forms, an Oasis MAX column was used. For chromatographic conditions, a RP-18 column with low ligand density showed satisfactory retention times; moreover, the use of methanol instead of acetonitrile lowered the limit of detection up to 0.1 μg l−1. The most popular beers in Italy were collected and analyzed; mainly oxidized mono-glutamate forms, in particular 10-HCO-FA and FA, were found, at levels from 12.4 to 98.6 μg l−1 and 1.4 and 11.9 μg l−1, respectively. The vitamers 5-formyl-tetrahydrofolate and 5-methyl-tetrahydrofolate were also detected.
      PubDate: 2019-03-01
       
  • Vis-NIR spectroscopy Combined with Wavelengths Selection by PSO
           Optimization Algorithm for Simultaneous Determination of Four Quality
           Parameters and Classification of Soy Sauce
    • Abstract: Abstract The performance of Vis-NIR techniques combined with variable select by a simple modified particle swarm optimization (PSO) algorithm for the determination of four quality parameters in soy sauce was evaluated. Compared with full-spectral support vector machine regression (Full-SVMR) and SVMR based on competitive adaptive reweighted sampling (CARS-SVM) method, the application of PSO wavelength selection provided a notably improved SVM regression model. The root-mean-square error of amino acid nitrogen, salt, total acid content, and color ratio obtained by PSO-SVMR are 0.0075 g/100 ml, 0.2176 g/100 ml, 0.0077 g/100 ml, and 0.0506 in predicted sets, respectively. The correlation coefficients of predicted sets obtained by PSO-SVMR reached 0.9997, 0.9462, 0.9996, and 0.9998, respectively. Meanwhile, a classification study constructed with principal component analysis and SVM classification model based on the feature wavelengths selected by PSO shows that Vis-NIR spectra can be used to classify soy sauce according to their brands and quality. The result showed that the Vis-NIR spectroscopy technique based on PSO wavelength selection has high potential to predict the quality parameters in a nondestructive way. This analytical tool may also contribute to the detection of fraud and mislabeling in the soy sauce market and certainly contribute to improvement in quality and reliability of the soy sauce market.
      PubDate: 2019-03-01
       
  • GC-MS-Olfactometric Differentiation of Aroma-Active Compounds in Turkish
           Heat-Treated Sausages by Application of Aroma Extract Dilution Analysis
    • Abstract: Abstract Aroma and aroma-active compounds of the heat-treated Turkish sausages obtained from beef, turkey, and chicken meats were studied. Aroma compounds were isolated by using solvent-assisted flavor evaporation and analyzed by gas chromatography/mass spectrometry-olfactometry (GC-MS-O) for the first time. A total of 47, 63, and 64 aroma compounds, including esters, terpenes, terpenols, aldehydes, phenols, ketones, acids, alcohols, lactones, furans, sulfur compounds, and pyrazines, were identified and quantified in the beef, turkey, and chicken sausages, respectively. The most prominent differences between the sausage samples were as follows: (E)-sabinene hydrate, β-cubebene, 2-hexanol, 5-methyl-2-heptanol, 2-heptanol, 2-nonanol, 4-methyl-3-hexanol, and heptanoic acid were detected only in chicken sausage samples; (Z)-p-mentha-1(7)8-dien-2-ol, dimethylallyl alcohol, 1,2-ethanediol, furfuryl alcohol, furfural, 2-ethyl-6-methylpyrazine, trimethyl pyrazine, and 2(5H)-furanone were detected only in turkey sausage samples; and 2-butoxyethanol, octanoic acid, and nonanoic acid were detected only in beef sausage samples. The aroma-active compounds of sausages were elucidated by using aroma extract dilution analysis (AEDA) for the first time. A combined total of 31 different aroma-active compounds were detected. The aroma-actives with the greatest flavor dilution (FD) factors in beef (FD 1024 and odor activity value (OAV) 178.07), and chicken (FD 2048 and OAV 262.63) sausages were γ-terpinene, and in turkey (FD 2048 and OAV 353.86) sausages were linalool.
      PubDate: 2019-03-01
       
  • Determination of Valifenalate in Grape, Vegetables, and Soil Using
           Ultrahigh Performance Liquid Chromatography Tandem Mass Spectrometry and
           Exploration of Its Degradation Behavior in Grape Field
    • Abstract: Abstract A novel, sensitive, and rapid analytical method for analyzing valifenalate residue in grape, vegetables (tomato, lettuce, eggplant, potato), and soil was established and validated using a modified quick, easy, cheap, effective, rugged, and safe (QuEChERS) method by ultrahigh performance liquid chromatography coupled to tandem mass spectrometry (UHPLC-MS/MS). The determination of the analyte was achieved within 4 min for per injection using electrospray ionization (ESI) operated in positive ion mode, and the retention time was 1.92 min. The developed method exhibited good linearity (R2 ≥ 0.9941) and the limit of quantitation (LOQ) was 0.5 μg/kg for analyte in selected matrices. The mean recoveries in six matrices ranged from 74.5 to 106.6% with intra-day relative standard deviation (RSD) of 0.7–12.3% and inter-day RSD of 3.2–12.2% at four spiking levels (0.5, 10, 100, 500 μg/kg) in recovery assays. The proposed method was applied to explore the dissipation rates of valifenalate in grapes and soil under field conditions, and the half-lives of analyte in grape and soil were 15.5 ± 1.4 and 3.8 ± 0.1 days, respectively. The study indicated that the method was effective and reliable for detection of valifenalate residues and the dissipation data can provide reference towards safety application for the analyte.
      PubDate: 2019-03-01
       
  • Simultaneous Determination of Six Protoalkaloids in Chinese Local
           Varieties of Loose-Skin Mandarins and Sweet Oranges by Strong Cation
           Exchange-High Performance Liquid Chromatography
    • Abstract: Abstract Six protoalkaloids in the fruits of 34 Chinese local loose-skin mandarins and 25 sweet oranges were detected simultaneously by strong cation exchange-high performance liquid chromatography with an ultraviolet detector (SCX-HPLC-UV). Linear regression analysis showed satisfactory linearity for all the analytes with the correlation coefficients (R2) higher than 0.9998. The satisfactory recoveries of the six protoalkaloids in pulps at two spiked levels ranged from 82.8 to 93.4% (RSDs, 1.5–6.1%) and those of synephrine in peels ranged from 89.3 to 91.9% (RSDs, 4.8–5.3%). The limits of quantification (LOQs) were 0.2 mg kg−1. The proposed method was used to determinate the protoalkaloids in loose-skin mandarins and sweet oranges to evaluate its feasibility and accuracy. The major alkaloid in the tested samples was synephrine, and the predominant alkaloid was N-methyltyramine, followed by octopamine. The variations in alkaloid components and contents were both largely the same for the tested varieties, verifying that alkaloids in plants are genetically controlled.
      PubDate: 2019-03-01
       
  • An Innovative Detection of Mechanically Separated Meat in Meat Products
    • Abstract: Abstract In meat products, mechanically separated meat (MSM) is often used as a raw material. Usage of MSM has economic benefit for meat industries and height utilization of animal raw material. In opposite is consumer concern for height quality of meat products. In order to detect MSM, invasive/destructive methods are mainly used and their nature is largely based on demonstrating the accompanying substances or structures. This paper describes a new non-invasive method to detect bone fragments as accompanying structures of MSM and it is based on X-ray micro computed tomography (μCT). μCT method was tested on a cooked meat product containing 50% of MSM. Bone tissue detected based on the higher density via μCT was confirmed by the image analysis and histochemical method using alizarin red staining which is used for detection of bone tissue. The μCT method was verified as a suitable non-destructive method to analyze bone fragments in meat products with the possibility to determine their shape parameters.
      PubDate: 2019-03-01
       
  • A Nondestructive Detection Method for Mixed Veterinary Drugs in Pork Using
           Line-Scan Raman Chemical Imaging Technology
    • Abstract: Abstract This study reports a nondestructive detection method using Raman chemical imaging (RCI) technology for the simultaneous determination of multiple veterinary drugs, such as ofloxacin, chloramphenicol, and sulfadimidine, in pork. A line-scan Raman imaging system was employed to acquire images of pure veterinary drugs and pork samples containing single and mixed drugs. Raman characteristic peaks at 1623, 1353, and 1147 cm−1 were identified for ofloxacin, chloramphenicol, and sulfadimidine, respectively. An image processing method was proposed to calculate the “pixel-ratio” values in each feature image, and linear regression models for a single veterinary drug were then established between the “pixel-ratio” values and the actual concentrations. By applying the models to samples with mixed veterinary drugs, the concentrations of the three drugs were predicted with correlation coefficients of 0.978, 0.986, and 0.984. The satisfactory results indicated that along with the proposed “pixel-ratio” method, RCI technology enables the nondestructive quantitation and spatial distribution visualization of multiple veterinary drug residues.
      PubDate: 2019-03-01
       
  • Acrylamide in Cookie Samples: Analysis Using an Efficient
           Co-Derivatization Coupled with Sensitive Microextraction Method Followed
           by Gas Chromatography-Mass Spectrometry
    • Abstract: Abstract Acrylamide, a “possible carcinogen” compound, has been subjected to analytical method development and evaluation in carbohydrate-rich cookie samples in this research. Cookies with different formula and consequently different acrylamide content were evaluated using microextraction method coupled with gas chromatography-mass spectrometry. Xanthydrol was selected as an efficient derivatization reagent. Important parameters in the extraction step such as the volume of extraction solvent, volume of dispersive solvent, amount of salt, and sample pH were optimized using central composite design. The calibration curve showed good linearity (R2 > 0.998) for acrylamide in the range of 2–500 ng g−1. The limits of detection and quantitation were 0.6 ng g−1 and 1.9 ng g−1, respectively. The relative standard deviation for the six analyses was 9.2%, and relative recoveries of acrylamide in spiked cookie samples were 89–95%. The proposed method demonstrated high recovery, sensitivity, and good enrichment factor for acrylamide determination of cookies with low and high acrylamide content. Graphical Abstract Determining acrylamide in cookie samples using HDS-DLLME-GC-MS
      PubDate: 2019-03-01
       
  • D-Optimal Design and PARAFAC as Useful Tools for the Optimisation of
           Signals from Fluorescence Spectroscopy Prior to the Characterisation of
           Green Tea Samples
    • Abstract: Abstract A procedure based on a D-optimal design coupled with PARAFAC was proposed to optimise signals from molecular fluorescence spectroscopy to obtain the best experimental conditions for the achievement of the best fluorescence signal of green tea samples. Excitation-emission signals (EEMs) were used to analyse the liquid samples (tea infusions), whereas front-face fluorescence excitation-emission matrices (FFEEMs) were recorded for the solid samples (raw or powder tea leaves). The experimental effort was reduced considerably in both cases thanks to the D-optimal design. Once the optimal conditions have been found, the characterisation of green tea was carried out and the sensitivity and specificity were evaluated. The projection of the principal component analysis (PCA) scores enabled to differentiate among the types of liquid green tea (Chinese tea, Chinese tea with lemon and Indian tea with and without theine). The discrimination of solid green tea according to its geographical origin (Chinese, Indian and Japanese) was also carried out through PCA. In addition, the discrimination between the most expensive Japanese tea and the cheapest one was possible. The sensitivity of the models built with SIMCA was 100% and the specificity of the models for the Chinese tea with respect to the Japanese tea was also high.
      PubDate: 2019-03-01
       
  • Monolithic Material Prepared with Nanodiamond as Monomer for the
           Enrichment of β-Sitosterol in Edible Oil
    • Abstract: Abstract In this paper, a hybrid monolithic column with modified nanodiamond and 1-dodecene as co-monomers was prepared and applied to the online enrichment and purification of β-sitosterol in edible oil. The obtained monolithic column was characterized by scanning electron microscopy (SEM) and nitrogen adsorption–desorption isotherm measurement, which indicated that the monolith possessed characteristics of porous structure and high permeability. Under the optimum conditions for extraction and determination, the linear regression coefficient for β-sitosterol was 0.998; the limit of detection (LOD) and the limit of quantitation (LOQ) were 3.0 μg mL−1 and 10.0 μg mL−1, respectively; the relative standard deviation (RSD) of intra-day and inter-day assays for four edible oils were 2.33–6.58% and 3.24–6.94%, respectively. The recovery was in the range of 89.6–105.5%. The results showed that the hybrid monolithic column with high selectivity and good permeability were successfully used as online solid-phase extraction (SPE) column for determination of β-sitosterol in edible oil.
      PubDate: 2019-03-01
       
 
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