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Abstract: Abstract An edible colorimetric label has been developed to determine the freshness level of mushrooms, i.e. white oyster mushrooms (Pleurotus ostreatus). The edible indicator label has been fabricated based on purple sweet potato (Ipomoea batatas L.) anthocyanins (PSPA) immobilized onto an edible film made of chitosan and cornstarch with added PVA. The freshness parameters of the mushrooms were pH, weight loss, texture, and sensory evaluation. The results showed that the colorimetric label was dark purple when the mushroom was fresh, and turn to light purple when the mushroom was still fresh, and finally green when the mushroom was no longer fresh. The color value (mean Red) of the label was measured using the ImageJ program, where its color value (mean Red) increased with decreasing freshness level of the mushrooms. The edible label can distinguish fresh mushrooms from spoilage, making it suitable to be used in a packaged mushroom as a freshness indicator. PubDate: 2024-09-01
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Abstract: Abstract In traditional Chinese medicine, Puerariae Flos and Chrysanthemum are widely utilized in herbal teas for hangover relief and heat-clearing detoxification. In this study, a new drink has been developed, employing these two flowers as primary raw materials. The objective of this study was to optimize the optimal formula, extraction process, and preparation method for the drink. The optimization of the formula and extraction process was guided by the utilization of the total flavonoids content in the water decoction of the two flowers as an indicator. Based on the sensory evaluation criteria, including color, smell, taste, and state of the drink, the water decoction addition, honey addition, and citric acid addition were optimized by single-factor experiments and orthogonal experiments. The best formula and extraction process was 10 g of Puerariae Flos, 10 g of Chrysanthemum, 48 min of decocting time, and 615 mL of water. The optimal preparation process consisted of 30% water decoction, 8% honey, and 0.025% citric acid. Subsequently, a golden yellow, transparent, and stable liquid was produced, possessing a sweet taste along with the distinctive aroma and flavor of Puerariae Flos and Chrysanthemum. PubDate: 2024-09-01
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Abstract: Abstract The present work aimed to evaluate the features of yerba mate kombucha during 7 days of fermentation at either 25 ºC or 30 ºC, monitoring physicochemical changes, sensory profile, and sensorial acceptance. The symbiotic microbial culture of active bacteria and yeasts (SCOBY) at the beginning and the end of the bioprocess was also identified. The yerba mate kombuchas fermented at 25 ºC for 5 days or 30 ºC for 4 days were suitable for consumption according to Brazilian standards. Acetic acid, ethanol, and chlorophyll contents were dependent on fermentation time and temperature, unlike the total phenolic content. The main yeast and bacterium in SCOBY were Brettanomyces bruxellensis and Komagataeibacter rhaeticus, respectively, which remained dominant when fermentation was conducted for up to 7 days at both temperatures. Fermentation of yerba mate infusion led to products characterized by sourness, vinegar bitter, and fermented flavors and aromas, making the acceptance of non-fermented Yerba mate preferable to fermented infusions. PubDate: 2024-09-01
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Abstract: Abstract Delice salt is a natural spring salt obtained from the evaporation of spring water from the Central Anatolia region of Turkey and is a food grade salt with a geographical indication certificate. The aim of this study was to evaluate the compliance of Delice natural spring salt (Delice NSS), a commercial product, with food grade criteria by physicochemical characterizations and to investigate whether it contains microplastics. The NaCl%, moisture suspended solids and acid insoluble matter contents of Delice NSS were analyzed and determined as 98.79% (w/w), 0.301% (w/w), 0.16% (w/w) and 0.01% (w/w), respectively. Sodium, other minerals, and heavy metals were analyzed by inductively coupled plasma-optical emission (ICP-OES) spectrometry. In addition, fluoride, nitrate, and sulphate ions were analyzed by ion chromatography (IC). The chemical and thermal properties of Delice NSS were characterized by FTIR, X-ray fluorescence (XRF) and thermogravimetric analyzer (TGA). Moreover, Delice NSS was investigated whether it contains microplastics and some particles were detected under fluorescence microscopy. However, it was concluded that particles were not microplastics after TGA and FTIR analyses. The results revealed that Delice NSS does not carry a risk in terms of physicochemical properties as a foodstuff. PubDate: 2024-09-01
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Abstract: Abstract The color of grape juice is an important acceptance attribute by consumers, but it suffers losses during storage. The use of commercial antioxidants has limitations because the concept of a “100% natural drink” of Brazilian legislation. This work characterized Brazilian grape seeds, and the cultivar extract with the greatest potential was encapsulated in arabic-gum (encapsulated extract-EE) to evaluate the color stabilizing capacity. The EE used in the grape juice was compared with the commercial antioxidants sulphite and enological tannin during storage (150 days). The BRS Magna and BRS Violeta grape seeds had the highest phenolic content, and the EE showed high catechin (4108 mg/kg), epicatechin (1161 mg/kg) and procyanidin-B2 (905 mg/kg) values. Sulfite was found to be the best color stabilizer. The use of EE (0.5 g/L) in grape juice improved color stability and anthocyanin stability. It was demonstrated that encapsulated grape seed extract has color stabilizing potential and that Brazilian grape seeds are a raw material of high technological value. PubDate: 2024-09-01
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Abstract: Abstract Edible coatings have been utilized for fresh fruit and vegetable preservation to ensure their safety and freshness. The present study reported the effect of edible coatings incorporated with Lycopene extract and Ascorbic Acid on fresh cut Apple slices (Red Delicious) during storage at refrigeration temperature for 12 days. The dipping treatments include Lycopene extract (LC-100 mg), Ascorbic acid (AAC-100 mg) and a combination of both LC + AAC (100 mg lycopene extract and 100 mg Ascorbic acid). Quality parameters (color, physicochemical and enzymatic activities) were studied up to 12 days at refrigeration temperature. Dipping treatments of LC and LC + AAC significantly showed lowest enzymatic activity than AAC treatment. However, color was not preserved in LC + AAC treatments due to high concentration of olive oil in these treatments. Furthermore, physicochemical quality was better preserved in LC + AAC treatments. PubDate: 2024-09-01
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Abstract: Abstract The effects of three strains of lactic acid bacteria (Lactobacillus plantarum, Lactobacillus rhamnosus, and Streptococcus thermophilus) on viable counts, physicochemical indicators, phenolic profiles, antioxidant capacities, and volatile compounds in purple sweet potato juice were investigated during fermentation. The results showed the viable count of three bacteria increased and exceeded 11 log CFU/mL after fermentation. At the end of fermentation, the purple sweet potato juice exhibited an increase in total phenolic and flavonoid content. In addition, lactic acid bacteria fermentation changed the phenolic profiles and enhanced antioxidant capacities. Moreover, Pearson's correlation analysis showed that DPPH, ABTS, and hydroxyl radical scavenging capacities were positively correlated with caffeic acid and vanillic acid content (p < 0.05). Furthermore, lactic acid bacteria fermentation improved the aroma complexity and sensory quality of purple sweet potato juice. In conclusion, this study provided useful information for the development of purple sweet potato juice fermented by lactic acid bacteria. PubDate: 2024-09-01
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Abstract: High-pressure processing (HPP) is a promising alternative to thermal pasteurization. Recent studies highlighted the effectivity of HPP (400–600 MPa and exposure times of 1–5 min) in reducing pathogenic microflora for up to 5 logs. Analysis of modern scientific sources has shown that pressure affects the main components of milk including fat globules, lactose, casein micelles. The behavior of whey proteins under HPP is very important for milk and dairy products. HPP can cause significant changes in the quaternary (> 150 MPa) and tertiary (> 200 MPa) protein structures. At pressures > 400 MPa, they dissolve in the following order: αs2-casein, αs1-casein, k-casein, and β-casein. A similar trend is observed in the processing of whey proteins. HPP can affect the rate of milk fat adhering as cream with increased results at 100–250 MPa with time dependency while decreasing up to 70% at 400–600 MPa. Some studies indicated the lactose influencing casein on HP, with 10% lactose addition in case in suspension before exposing it to 400 MPa for 40 min prevents the formation of large casein micelles. Number of researches has shown that moderate pressures (up to 400 MPa) and mild heating can activate or stabilize milk enzymes. Pressures of 350–400 MPa for 100 min can boost the activity of milk enzymes by up to 140%. This comprehensive and critical review will benefit scientific researchers and industrial experts in the field of HPP treatment of milk and its effect on milk components. Graphical abstract PubDate: 2024-09-01
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Abstract: In this study, an active biofilm was developed by incorporating red dragon fruit peel (RDF) extract into soy protein isolate (SPI) film matrix for sustainable food packaging. The addition of betalain-rich-RDF extract (1–7 wt%) significantly improved UV-blocking and antioxidant properties of the film compared to the control film. As wt% of RDF-extract increased, water vapor permeability, water solubility, and elongation at break decreased by 1.06 × 10–10 g m m−2 s−1 Pa−1, 34.25%, and 133.25%, respectively. On the other hand, Tensile strength increased significantly (P < 0.05) by 78.76%. FTIR results confirmed the intermolecular interaction between RDF extract and SPI through hydrogen bonding, while XRD result showed a decrease in the crystallinity degree of the film with RDF extract addition. However, no significant change in the TGA curve between extract-incorporated SPI films was observed. SEM analysis revealed that SPI B and SPI D films had a more compact and denser structure than the control film, while AFM analysis showed an increase in Ra and Rq values representing higher surface roughness of SPI D film. SPI D film also significantly (P < 0.05) decreased the weight loss and increased total soluble solids of freshly cut apples over 7-day storage period. Graphical abstract PubDate: 2024-09-01
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Abstract: Abstract Goats are important livestock mainly recognized for their low rearing costs and adaptability to harsh climate making them suitable for small farmers. Goat’s milk has been tagged as highly consumed milk in many parts of the world and also carry essential substances as minerals, vitamins, enzymes, proteins, electrolytes and fatty acids which are easily metabolised by the body. The unique health benefits of goat milk make it a remedy for various disease conditions. Additionally, the low allergenicity and high digestibility of goat milk make it a popular dairy product for infants and immunocompromised individuals. This review summarizes the efforts and achievements made in analyzing goat milk’s nutritional, therapeutic, and functional properties and its current applications in the food and nutraceuticals sector. Also, the article provides insights into the diverse range of food and cosmetics applications of goat milk-derived components. Besides the long history of the use of goat milk for human nutrition, the scientific literature concerning various bioactive components and their beneficial therapeutic effects with respect to modern science are also reviewed in detail. PubDate: 2024-09-01
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Abstract: Abstract Plants have long served as a valuable source of bioactive components in traditional ayurvedic remedies for disease prevention. In our research, we explored an underutilized plant species, Cordia dichotoma G. Forst. Our findings revealed that cordia fruits are rich source of dietary carbohydrates (30.06%), dietary fibers (17.6%) and crude proteins (6.67%). The cordia fruits found in substantial amount of macro-minerals namely K (19,652.04 ppm), Na (3755.10 ppm), Mg (1763.94 ppm) and Ca (1676.81 ppm) and micro-minerals including Fe (220.89 ppm), Zn (34.87 ppm), Mn (15.82 ppm) and Cu (10.64 ppm). Cordia fruits are also found with phenolic compounds including Gallic acid (4.45 μg/mg (CD Aq), 3.76 μg/mg (CD 50%), 3.06 μg/mg (CD 90%), Caffeic acid (3.14 μg/mg (CD Aq), 2.59 μg/mg (CD 50%), 1.39 μg/mg (CD 90%), Vanillic acid ( 0.15 μg/mg (CD Aq), 0.02 μg/mg (CD 50%), 0.20 μg/mg (CD 90%) and Syringic acid (0.52 μg/mg (CD Aq), 0.88 μg/mg (CD 50%), 0.01 μg/mg (CD 90%). These results suggested the potential role of cordia fruits in our dietary system which not only assist in food security but also provide economic security to the local farmers. PubDate: 2024-09-01
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Abstract: Abstract This study aims to optimize the culture condition of semi-liquid sourdough using Kombucha as a starter culture and to evaluate the physicochemical properties, microbial viability and recovering ability of sourdough powder when packaged in different types of packaging for 120 days. Optimal maturation time (103.47 h) and maximum leavening rate (1.27 mL/h) of sourdough were achieved at an incubation temperature of 34 °C and interval refreshment time at 7 h. The optimized culture was spray-dried using 3% Arabic gum (w/v) as a carrier agent yielding 35.86% powder with acceptable viability of 8.71 log CFU/g lactic acid bacteria and 9.03 CFU/g yeast. The sourdough powder was packed in four packaging (LDPE, vacuumed LDPE, aluminum foil laminated pouch and vacuumed aluminum foil laminated pouch) and exhibited comparable physicochemical properties during 120 days of storage. The viability of both lactic acid bacteria and yeast count in sourdough powder when packed in vacuumed aluminum foil laminated pouch showed higher stability for 90 days (6.18 log CFU/g and 6.82 log CFU/g) but reduced to below detection limit after 120 days (5.54 and 5.94 log CFU/g). This suggested that Kombucha sourdough powder packed in vacuumed aluminum laminated pouch could be stored for up to 90 days. PubDate: 2024-09-01
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Abstract: Abstract Cocoa products namely cocoa powder (CP), cocoa butter (CB) and cocoa mass (CM) were selected for their utilization in soft dough biscuits. CP was blended with the refined wheat flour (WF—0, 5, 10 and 15% levels) and rheological and quality characteristics of biscuits were studied. The spread ratio decreased (10.1–8.8), density (0.49–0.52 g/cm3) and breaking strength values (1127–1369 g force) increased gradually with increase in CP. Combination of GMS and SSL at 0.25% each improved the quality of biscuits at 10% incorporation of CP. Further the biscuit fat (BF) was replaced with CB (0, 25, 50 and 75%). Later the biscuits with CM were prepared by replacing the flour (15%) and BF (0, 25, 50 and 75%). Acceptability of the CM based biscuits was better when compared to CB based biscuits. The total polyphenol content in control biscuits was 55.55 mg/100 g and was in the range between 81.98 and 102.05 mg/100 g for cocoa based biscuits. The protein content in cocoa based biscuits was marginally higher than the control biscuit. Though there was a wide variation in the fat content and different fatty acids in raw materials, interestingly, the values varied narrowly in biscuits. PubDate: 2024-09-01
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Abstract: Thin layer chromatography bioautographic assays facilitate the acquisition of activity-profile chromatograms and assist in pinpointing active constituents within complex mixtures by observing the inhibition halos they produce. Peroxidase is an enzyme implicated in the browning of different fresh cut vegetables and in several diseases. A peroxidase bioautographic assay was developed, based on enzyme agarose immobilization and the 2,2′-Azino-bis(3-ethylbenzothiazoline-6-sulfonic acid) diammonium salt/radical cation (ABTS/ABTS·+) reporter system. Peroxidase was purified from potatoes with the aim to detect specific inhibitors. To reduce false positives, a non-enzymatic assay was also employed. The best results are obtained when a solution containing agarose, ABTS, hydrogen peroxide, and peroxidase in phosphate buffer is poured over the TLC plate (final concentrations: 0.031 mmoles/cm2, 0.239 µmoles/cm2, and 84.04 U/cm2) and incubated for 70 min. Limit of detection and quantification for quercetin is 0.16 µg and 0.54 µg, respectively. The developed system is able to detect quercetin in a Solidago chilensis Meyen extract and a peroxidase inhibitor in a Cichorium intybus L. extract. Therefore, the assay can detect inhibitory constituents in complex mixtures and differentiate between peroxidase inhibitors and ABTS·+ radical scavengers before any preparative fractionation, helping to take early operational decisions that can save time and resources. Graphical abstract PubDate: 2024-09-01
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Abstract: Abstract The optimization of hydration temperature and duration were determined in six basmati and non-basmati paddy cultivars varying in grain size, shape, and amylose content based on kinetic parameters and effect of hydration temperature on physical, milling, textural and color attributes. Based on higher R2, lower Chi square and RMSE values, Peleg model fitted more suitably compared to Singh and Kulshrestha model. Hydration process significantly altered geometric, gravimetric and mechanical properties as evident by regression analysis. Physical properties except length and L/B ratio positively correlated with increasing hydration temperature. Head rice yield significantly improved in the hydrated treatments and showed a linear increase with the increase in hydration temperature. Head rice yield significantly correlated with hardness of grain (r = 0.684, p ≤ 0.01). Variable physico-chemical properties of cultivars led to establishment of cultivar specific optimum hydration temperature. Based on improvement in hardness, milling efficiency, head rice yield, color and textural attributes, the optimized temperature emerged as 75 °C for long slender grained cultivars (PB1509, PB1718, PS17) and 80 °C for medium grained cultivars (PD18, KJ, AL). The results revealed that optimum hydration temperature should be cultivar specific to get better output of parboiling process. PubDate: 2024-09-01
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Abstract: Abstract Three-dimensional polymeric network of hydrogels avoids its dissolution into the aqueous region. Hydrogels must have strong structural integrity to be used for drug/nutraceutical delivery. A three factor-three-level Box-Behnken design was used to understand the effects of starch concentration, NaCl, and pH on the textural and structural integrity of Lysine modified kutki millet starch hydrogels. Various kinetic models were fitted to the time-course measurement of shrinkage behavior of both conventionally (CDHG) and freeze-dried (FDHG) hydrogel. Increasing the swelling temperature (5–50 °C) showed values of higher molecular weight of polymer chains between neighboring crosslinks \((\overline{{M }_{c})}\) (g/mol) for FDHG (9539.59–56,769.72) than CDHG (1096.28–11,420.48). Similarly, mesh size (ξ) was more for FDHG (38.63–109.53 Ȧ) than CDHG (10.97–42.74 Ȧ). However, other network parameters such as polymer volume fraction ( \({\varnothing }_{p}\) ) was lower for FDHG (0.229-0.146) than CDHG (0.3882–0.222). These values suggest low swelling power of CDHG compared to FDHG. Thermodynamically, FDHG took less energy to swell than CDHG. The study showed that FDHG has better properties than CDHG and could be employed in nutraceutical delivery. PubDate: 2024-09-01
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Abstract: Elevation in incidences of cow milk protein allergies warrants the need to investigate the suitability of non-bovine milk alternatives for human consumption. Donkey milk has emerged as a potential alternative attributed to its benefits to human health. Evidently, it is a great option for infants as it closely resembles human milk. Researchers have also investigated its suitability in producing numerous dairy products. This review discusses the various nutri-functional aspects of donkey milk, its applications and challenges in the manufacturing of infant formula, yogurt, cheese, ice cream, kefir, and fermented milk. Research updates on processing techniques (thermal and non-thermal) for donkey milk preservation are also delineated. Despite abundant nutrients and desirable functional properties, the growth of the donkey milk industry is not significant. This is due to the lower yield, scattered population, and lack of regulatory standards for both products and processing. Recommendation on research gaps and obstacles in its commercialization are also addressed. Graphical abstract PubDate: 2024-09-01
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Abstract: Abstract This study aimed to fabricate edible films from tapioca (T) and potato (P) starch, assessing their physicochemical properties and biodegradation across different ratios (T100P0, T70P30, T50P50, and T30P70). The films underwent evaluation for moisture content, thickness, water vapor permeability, and color values. T100P0 and T30P70 formulations exhibited the highest film transparency at 43.51 and 43.93%. T30P70 exhibited (p < 0.05) water solubility at 38.62%. The film was heat-sealed as a seasoning sachet and tested for solubility at 90–95 °C. The 100% tapioca starch film (T100P0) displayed rapid dissolution (4 min 50 s), indicating potential use in heat-sealed. Seasoning sachets made from T100P0 demonstrated the highest elongation at break and the lowest tensile strength. Biodegradation assessment revealed complete degradation of all four film formulations in soil at ambient temperature within 8 days. This study underscores the promising utilization of tapioca starch in eco-friendly food packaging, providing a sustainable solution to the escalating issue of plastic waste in the environment. Future investigations will concentrate on refining the film and determining its shelf-life concerning film characteristics and packaged foods. PubDate: 2024-08-06
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Abstract: Abstract Oat milk has attracted considerable consumer interest because of its high nutritional value, dietary fiber content, and phytochemical content. High-pressure processing (HPP) increases the shelf life of food while maintaining its nutritional value. However, HPP is known to induce rheological changes. Therefore, this study aimed to assess the rheological and microbiological characteristics of oat milk and the effect of HPP on various pressure levels. Oat milk was prepared and then treated with high-pressure processing (300–600 MPa) and heat. Subsequently, it was evaluated for its rheological properties, color, microbial content, and sensory attributes. Oat milk processed at 600 MPa was found to have improved viscosity (0.015–0.99, Pa.s), color, protein content, and homogenization compared to other treatments (p ≤ 0.05). The HPP inactivated mesophilic and psychotropic microorganisms, resulting in a 5-log drop in total microbial counts at 600 MPa. The panelists perceived that the sensory characteristics of the sample treated at 600 MPa were similar to those of samples that had been heat-treated (p < 0.05). High-pressure processing at 600 MPa effectively inhibited vegetative cells without negatively impacting the rheological properties of oat milk, in contrast to heat-treated milk. PubDate: 2024-08-06
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Abstract: Abstract In this present study, a three-factor Box–Behnken, response surface methodology (RSM) design was employed to optimize the skimmed milk powder (SMP)/whey protein concentrate (WPC) ratio (0.25–0.75%w/v) as a source of milk protein, inulin (1–2%w/v), and honey (4–6%w/v) for production of high-quality goat milk yoghurt (GMY). The resulting ANOVA and response surface equations revealed the significant effect (p < 0.05) of these variables on the various attributes such as total solid (%), pH, titratable acidity [(LA) % by weight], syneresis (%), DPPH (% inhibition), viscosity (m.Pa⋅s), whiteness index (WI), and overall acceptability (OA). The coefficient of determination (R2) for all response variables ranged from 0.88 to 0.99. Lack-of-fit tests resulted in non-significant F-values. The optimal conditions were determined as SMP/WPC at 0.36%w/v, inulin at 1.00%w/v, and honey at 6.00%w/v. The optimum values for total solid, pH, titratable acidity, syneresis, DPPH, viscosity, WI, and OA were 22.03, 4.46, 0.77, 6.34, 25.20, 182.30, 76.29 and 8.37, respectively with desirability value of 0.95. PubDate: 2024-08-01