Maiara Pereira Mendes, Ghiovani Zanzotti Raniero, Ivo Demiate, Antonio Roberto Giriboni Monteiro
The present work aimed to evaluate the efficiency of the dual modification of corn starch by reactive extrusion, using a mono-thread extruder, and also sodium tripolyphosphate and trimetaphosphate to obtain cross-linked starch. Native starch, extruded native starch, and starch cross-linked by conventional methods were used as standards to evaluate the modification efficacy by reactive extrusion. The content of phosphorus residues allowed by legislation in starch modification is 0.4%. Therefore, the reactive extrusion demonstrated greater effectiveness because cross-linked starch obtained by this method was within the established limit of phosphorus residues, in contrast to that obtained by the conventional method, which exceeded this amount. In addition, it required greater water consumption for residual removal, therefore producing effluents, and also wasting energy and time. Cross-linking by the extrusion process showed a profound influence on the characteristics of modified starch, generating specific functional characteristics, mainly in terms of pasting properties. Also, the samples presented low viscosity and pasting temperature. In conclusion, cross-linking through reactive extrusion was fast, produced starch with phosphorus content within the limits allowed by legislation, and generated different physicochemical characteristics.
{"title":"Effects of reactive extrusion on cross-linking of corn starch","authors":"Maiara Pereira Mendes, Ghiovani Zanzotti Raniero, Ivo Demiate, Antonio Roberto Giriboni Monteiro","doi":"10.47836/ifrj.30.4.20","DOIUrl":"https://doi.org/10.47836/ifrj.30.4.20","url":null,"abstract":"The present work aimed to evaluate the efficiency of the dual modification of corn starch by reactive extrusion, using a mono-thread extruder, and also sodium tripolyphosphate and trimetaphosphate to obtain cross-linked starch. Native starch, extruded native starch, and starch cross-linked by conventional methods were used as standards to evaluate the modification efficacy by reactive extrusion. The content of phosphorus residues allowed by legislation in starch modification is 0.4%. Therefore, the reactive extrusion demonstrated greater effectiveness because cross-linked starch obtained by this method was within the established limit of phosphorus residues, in contrast to that obtained by the conventional method, which exceeded this amount. In addition, it required greater water consumption for residual removal, therefore producing effluents, and also wasting energy and time. Cross-linking by the extrusion process showed a profound influence on the characteristics of modified starch, generating specific functional characteristics, mainly in terms of pasting properties. Also, the samples presented low viscosity and pasting temperature. In conclusion, cross-linking through reactive extrusion was fast, produced starch with phosphorus content within the limits allowed by legislation, and generated different physicochemical characteristics.","PeriodicalId":13754,"journal":{"name":"international food research journal","volume":"21 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2023-08-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"136239994","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"农林科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Polyvinyl alcohol-starch (PVA/ST) active films incorporated with lemongrass oil (LMO) or 2-hydroxypropyl-β-cyclodextrin, and LMO (HP-β-CD/LMO) emulsion were developed in the present work. The effects of LMO or HP-β-CD/LMO emulsion on the properties of films, and their application in large yellow croaker preservation were investigated. The average particle size and the encapsulation efficiency of the HP-β-CD/LMO emulsion were 150.07 nm and 81.32%, respectively. The scanning electron microscopy (SEM) results revealed that HP-β-CD improved the compatibility between PVA and starch, and LMO was well embedded in HP-β-CD. The incorporation of LMO or HP-β-CD/LMO enhanced the water vapour barrier property and flexibility of the film while weakening its mechanical strength. The oxygen barrier property of the film was weakened by the incorporation of LMO and strengthened by HP-β-CD/LMO. The film incorporated with HP-β-CD/LMO exhibited a little weaker antioxidant and antibacterial activities than the film containing LMO owing to their release property. The existence of HP-β-CD postponed the release of LMO from the film into food simulant (10% ethanol). The preservation results demonstrated that the film containing LMO or HP-β-CD/LMO efficiently inhibited the growth of microorganisms and lipid oxidation of fish; and delayed the decomposition of protein and freshness reduction of large yellow croaker. Additionally, the film added with HP-β-CD/LMO exhibited the best protection for fish quality. In other words, the film with the proper release property of active agents contributed to the preservation of aquatic products.
{"title":"Fabrication of polyvinyl alcohol-starch controlled release active film incorporated with 2-hydroxypropyl-β-cyclodextrin/lemongrass oil emulsion for large yellow croaker (Pseudosciaena crocea) preservation","authors":"Jiaxi Wang, Xinyi Fan, Zhijie Chen, Chenwei Chen, Jing Xie","doi":"10.47836/ifrj.30.4.08","DOIUrl":"https://doi.org/10.47836/ifrj.30.4.08","url":null,"abstract":"Polyvinyl alcohol-starch (PVA/ST) active films incorporated with lemongrass oil (LMO) or 2-hydroxypropyl-β-cyclodextrin, and LMO (HP-β-CD/LMO) emulsion were developed in the present work. The effects of LMO or HP-β-CD/LMO emulsion on the properties of films, and their application in large yellow croaker preservation were investigated. The average particle size and the encapsulation efficiency of the HP-β-CD/LMO emulsion were 150.07 nm and 81.32%, respectively. The scanning electron microscopy (SEM) results revealed that HP-β-CD improved the compatibility between PVA and starch, and LMO was well embedded in HP-β-CD. The incorporation of LMO or HP-β-CD/LMO enhanced the water vapour barrier property and flexibility of the film while weakening its mechanical strength. The oxygen barrier property of the film was weakened by the incorporation of LMO and strengthened by HP-β-CD/LMO. The film incorporated with HP-β-CD/LMO exhibited a little weaker antioxidant and antibacterial activities than the film containing LMO owing to their release property. The existence of HP-β-CD postponed the release of LMO from the film into food simulant (10% ethanol). The preservation results demonstrated that the film containing LMO or HP-β-CD/LMO efficiently inhibited the growth of microorganisms and lipid oxidation of fish; and delayed the decomposition of protein and freshness reduction of large yellow croaker. Additionally, the film added with HP-β-CD/LMO exhibited the best protection for fish quality. In other words, the film with the proper release property of active agents contributed to the preservation of aquatic products.","PeriodicalId":13754,"journal":{"name":"international food research journal","volume":"29 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2023-08-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"136240601","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"农林科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Hongyan Yang, Lan Wang, Heng Du, Dongxin Zhao, Chuang Liu, Kui Lu
Antimicrobial peptides (AMPs) are active short peptides that exist in microorganisms, insects, amphibians, plants, and mammals. Some naturally occurring AMPs have low antimicrobial activity, high haemolysis, potential toxicity toward mammalian cells, and high susceptibility to proteolytic degradation, which limit their practical application. In recent years, many efforts have been made to design and modify AMPs to improve their properties. The present review focuses on site-directed mutation, truncation, hybridisation, capping, and cyclisation of AMPs. The review further introduces the application of solid-phase peptide synthesis technology for AMPs, and summarises the methods for evaluating the antimicrobial activity of AMPs. The in-depth research on AMPs is expected to play an essential role in the fields of agriculture, animal husbandry, food industry, and medicine.
{"title":"Antimicrobial peptides: Design, chemical synthesis, activity evaluation, and application","authors":"Hongyan Yang, Lan Wang, Heng Du, Dongxin Zhao, Chuang Liu, Kui Lu","doi":"10.47836/ifrj.30.4.01","DOIUrl":"https://doi.org/10.47836/ifrj.30.4.01","url":null,"abstract":"Antimicrobial peptides (AMPs) are active short peptides that exist in microorganisms, insects, amphibians, plants, and mammals. Some naturally occurring AMPs have low antimicrobial activity, high haemolysis, potential toxicity toward mammalian cells, and high susceptibility to proteolytic degradation, which limit their practical application. In recent years, many efforts have been made to design and modify AMPs to improve their properties. The present review focuses on site-directed mutation, truncation, hybridisation, capping, and cyclisation of AMPs. The review further introduces the application of solid-phase peptide synthesis technology for AMPs, and summarises the methods for evaluating the antimicrobial activity of AMPs. The in-depth research on AMPs is expected to play an essential role in the fields of agriculture, animal husbandry, food industry, and medicine.","PeriodicalId":13754,"journal":{"name":"international food research journal","volume":"121 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2023-08-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"136239987","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"农林科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
High noodle consumption is associated with an increased risk of generative diseases due to noodles' relatively high glycaemic response. Plants containing high phenolic compounds can reduce the glycaemic response of carbohydrate-rich foods. The present work thus aimed to evaluate the physical properties and glycaemic response of tapioca noodles fortified with a mixture of turmeric (T), cinnamon (C), and guava leaves (G) powder. The proportions of herbs (T: C: G) were 0.00: 0.00: 0.00 g (C1); 1.00: 0.50: 1.50 g (C2); 1.33: 0.67: 1.00 g (C3); 1.67: 0.83: 0.50 g (C4); and 2.00: 1.00: 0.00 g (C5). Herb mixtures increased the total phenolic and flavonoid contents of the noodles. Noodles with higher tensile strength (TS) were harder and less swollen because the water absorption capacity (WAC) was lower, but effect of the formulas on the oil absorption capacity (OAC) varied. Area under the curve (AUC) of blood sugar levels showed that C2 noodles had the smallest area (2,321 units) as compared to C1 (3,066 units) and C5 (3,241 units) noodles, but the difference was not statistically significant, thus indicating that the glycaemic responses of these noodles were similar to that of the original noodles when consumed by healthy volunteers.
由于面条的血糖反应相对较高，大量食用面条与生殖疾病的风险增加有关。含有高酚类化合物的植物可以减少富含碳水化合物的食物的血糖反应。因此，本研究旨在评估用姜黄(T)、肉桂(C)和番石榴叶(G)粉混合强化的木薯粉的物理特性和血糖反应。药材配比(T: C: G)为0.00:0.00:0.00 G (C1);1.00: 0.50: 1.50 g (C2);1.33: 0.67: 1.00 g (C3);1.67: 0.83: 0.50 g (C4);和2.00:1.00:0.00 g (C5)。混合草药可提高面条中总酚和类黄酮含量。抗拉强度高的面条由于吸水率低而较硬，肿胀程度低，但配方对吸油率的影响不同。血糖水平曲线下面积(AUC)显示，C2面条面积最小(2321单位)，C1面条面积最小(3066单位)，C5面条面积最小(3241单位)，但差异无统计学意义，这表明健康志愿者食用这些面条时的血糖反应与原始面条相似。
{"title":"Physical properties and glycaemic response of tapioca noodles fortified with herb mixture","authors":"Samsu Udayana Nurdin, Ratna Wylis Arief, Banon Rustiaty, Robet Asnawi, Amalia M. Mar’atun, None Arfiathi, Dyah Koesoemawardani, Neti Yuliana, Sutopo Hadi","doi":"10.47836/ifrj.30.4.18","DOIUrl":"https://doi.org/10.47836/ifrj.30.4.18","url":null,"abstract":"High noodle consumption is associated with an increased risk of generative diseases due to noodles' relatively high glycaemic response. Plants containing high phenolic compounds can reduce the glycaemic response of carbohydrate-rich foods. The present work thus aimed to evaluate the physical properties and glycaemic response of tapioca noodles fortified with a mixture of turmeric (T), cinnamon (C), and guava leaves (G) powder. The proportions of herbs (T: C: G) were 0.00: 0.00: 0.00 g (C1); 1.00: 0.50: 1.50 g (C2); 1.33: 0.67: 1.00 g (C3); 1.67: 0.83: 0.50 g (C4); and 2.00: 1.00: 0.00 g (C5). Herb mixtures increased the total phenolic and flavonoid contents of the noodles. Noodles with higher tensile strength (TS) were harder and less swollen because the water absorption capacity (WAC) was lower, but effect of the formulas on the oil absorption capacity (OAC) varied. Area under the curve (AUC) of blood sugar levels showed that C2 noodles had the smallest area (2,321 units) as compared to C1 (3,066 units) and C5 (3,241 units) noodles, but the difference was not statistically significant, thus indicating that the glycaemic responses of these noodles were similar to that of the original noodles when consumed by healthy volunteers.","PeriodicalId":13754,"journal":{"name":"international food research journal","volume":"10 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2023-08-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"136239988","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"农林科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Blueberry (Vaccinium corymbosum) has characteristics that make it a highly coveted fruit by the population that seeks benefits for their health, thus giving it economic and social relevance. However, it is a very perishable fruit. In the present work, Botrytis sp., Penicillium sp., and Alternaria sp. were isolated from blueberry, and molecularly identified. The in vitro effect of chitosan (CHI) and salicylic acid (SA) on the growth of these phytopathogens was then evaluated, as well as the incidence of the disease after the application of these treatments on blueberry. CHI at 1.5% achieved an in vitro mycelial growth inhibition of Botrytis sp., Penicillium sp., and Alternaria sp. by 93, 84, and 40%, respectively. Furthermore, a complete germination inhibition of Penicillium sp. and Alternaria sp. was accomplished; Botrytis sp. spores were less sensitive to chitosan treatment. The germination percentage of the phytopathogens was reduced by 90% using SA at 5 mM. The in vivo application of CHI at 1.5% and SA at 5 mM decreased the percentage of incidence of phytopathogens in blueberries harvested after storage period at 25°C, as compared to the control. Based on these results, SA and CHI represent an alternative for the control of phytopathogens in blueberry to eliminate the use of synthetic fungicides.
蓝莓(Vaccinium corymbosum)的特点使其成为寻求健康益处的人群非常垂涎的水果，从而具有经济和社会意义。然而，它是一种很容易腐烂的水果。本文从蓝莓中分离得到了葡萄孢菌、青霉菌和交替孢菌，并进行了分子鉴定。然后评价壳聚糖(CHI)和水杨酸(SA)对这些植物病原体生长的体外影响，以及这些处理在蓝莓上应用后的发病率。1.5%浓度的CHI对葡萄孢菌、青霉菌和交替孢菌的体外生长抑制率分别为93%、84%和40%。此外，青霉菌和互交菌的萌发被完全抑制;Botrytis sp.孢子对壳聚糖处理不敏感。与对照相比，在25°C贮藏期后收获的蓝莓中，体内施用1.5% CHI和5 mM SA降低了植物病原体的发芽率90%。综上所述，SA和CHI为蓝莓植物病原菌的防治提供了一种替代方法，以消除合成杀菌剂的使用。
{"title":"Chitosan and salicylic acid as alternatives for the control of postharvest fungal diseases in blueberries (Vaccinium corymbosum)","authors":"Surelys Ramos-Bell, Luis Guillermo Hernandez-Montiel, Rita Velázquez Estrada, Cristina Moreno-Hernández, Porfirio Gutierrez-Martinez","doi":"10.47836/ifrj.30.4.16","DOIUrl":"https://doi.org/10.47836/ifrj.30.4.16","url":null,"abstract":"Blueberry (Vaccinium corymbosum) has characteristics that make it a highly coveted fruit by the population that seeks benefits for their health, thus giving it economic and social relevance. However, it is a very perishable fruit. In the present work, Botrytis sp., Penicillium sp., and Alternaria sp. were isolated from blueberry, and molecularly identified. The in vitro effect of chitosan (CHI) and salicylic acid (SA) on the growth of these phytopathogens was then evaluated, as well as the incidence of the disease after the application of these treatments on blueberry. CHI at 1.5% achieved an in vitro mycelial growth inhibition of Botrytis sp., Penicillium sp., and Alternaria sp. by 93, 84, and 40%, respectively. Furthermore, a complete germination inhibition of Penicillium sp. and Alternaria sp. was accomplished; Botrytis sp. spores were less sensitive to chitosan treatment. The germination percentage of the phytopathogens was reduced by 90% using SA at 5 mM. The in vivo application of CHI at 1.5% and SA at 5 mM decreased the percentage of incidence of phytopathogens in blueberries harvested after storage period at 25°C, as compared to the control. Based on these results, SA and CHI represent an alternative for the control of phytopathogens in blueberry to eliminate the use of synthetic fungicides.","PeriodicalId":13754,"journal":{"name":"international food research journal","volume":"31 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2023-08-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"136239989","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"农林科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Nur Najihah Azahar, N. Muhammad, Nur Fazira Abdul Rahim
Radish is a vegetable high in nutritional and phytochemical contents that are beneficial to the human body, especially for managing kidney stone disease. However, it is less consumed as compared to other vegetables due to its pungent flavour and odour. Therefore, the objective of the present work was to formulate a radish effervescent tablet to enhance the palatability of the vegetable. The radish effervescent tablet was formulated by using Simplex Lattice Mixture Design where the percentages of sucralose and strawberry flavour were chosen as the factors. Five formulations were generated, and sensory acceptance test was conducted on them. Next, the halalan toyyiban principle compliance was evaluated based on the Halal Control Points (HCPs), toxicity assay (brine shrimp lethality assay), anti-urolithiatic properties (turbidimetric assay), and nutritional composition (energy, total protein, total fat, total carbohydrate, and total sugar). Formulation 5 (F5) with 20% citric acid, 12% sodium bicarbonate, 58% radish powder, 2.5% sucralose, and 7.5% strawberry flavour was selected as the most acceptable formulation (p < 0.05). For the halalan toyyiban principle compliance, F5 was evaluated, and it complied with the halalan toyyiban principles. It is halal, non-toxic, and safe for consumption as the LC50 was greater than 1,000 μg/mL (2,223.31 μg/mL) for toxicity test, and exhibited significant potential as an anti-urolithiatic agent (88.13% inhibition). In the future, prototype development of radish effervescent tablet with potential anti-urolithiatic and fast-dissolving properties can be carried out.
{"title":"Formulation of halalan toyyiban radish effervescent tablet","authors":"Nur Najihah Azahar, N. Muhammad, Nur Fazira Abdul Rahim","doi":"10.47836/ifrj.30.3.08","DOIUrl":"https://doi.org/10.47836/ifrj.30.3.08","url":null,"abstract":"Radish is a vegetable high in nutritional and phytochemical contents that are beneficial to the human body, especially for managing kidney stone disease. However, it is less consumed as compared to other vegetables due to its pungent flavour and odour. Therefore, the objective of the present work was to formulate a radish effervescent tablet to enhance the palatability of the vegetable. The radish effervescent tablet was formulated by using Simplex Lattice Mixture Design where the percentages of sucralose and strawberry flavour were chosen as the factors. Five formulations were generated, and sensory acceptance test was conducted on them. Next, the halalan toyyiban principle compliance was evaluated based on the Halal Control Points (HCPs), toxicity assay (brine shrimp lethality assay), anti-urolithiatic properties (turbidimetric assay), and nutritional composition (energy, total protein, total fat, total carbohydrate, and total sugar). Formulation 5 (F5) with 20% citric acid, 12% sodium bicarbonate, 58% radish powder, 2.5% sucralose, and 7.5% strawberry flavour was selected as the most acceptable formulation (p < 0.05). For the halalan toyyiban principle compliance, F5 was evaluated, and it complied with the halalan toyyiban principles. It is halal, non-toxic, and safe for consumption as the LC50 was greater than 1,000 μg/mL (2,223.31 μg/mL) for toxicity test, and exhibited significant potential as an anti-urolithiatic agent (88.13% inhibition). In the future, prototype development of radish effervescent tablet with potential anti-urolithiatic and fast-dissolving properties can be carried out.","PeriodicalId":13754,"journal":{"name":"international food research journal","volume":"20 1","pages":""},"PeriodicalIF":0.8,"publicationDate":"2023-08-21","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"91169921","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"农林科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Spectrophotometry is a widespread method to observe anthocyanin content, colour quality, and chemical change of an anthocyanin-source extract. The spectrogram may vary due to the extraction method, and may also change over time. The present work studied the spectrophotometric varieties of butterfly pea flower (Clitoria ternatea L.) extract using the cell wall disruption method (mortar-pestle: MP; freezing-thawing: FT; 6 min steam blanching: SB; and 6 min hot water blanching: WB) and aqueous extraction temperature (30, 45, and 60°C) for 210 min. The absorbance was monitored every 30 min. The UV-vis light absorbance shift of the extract during storage at 30°C (E30) and 50°C (E50) was also evaluated. Both SB and WB resulted in extracts with a similar spectrogram and effectively suppressed the brown colour development (browning index: 0.27 ± 0.02 and 0.3 ± 0.01, respectively). The cell wall disruption method did not affect the total anthocyanin. Therefore, the blanching process before extraction was appropriate. The most effective extraction parameter yielding the highest anthocyanin and phenolic substances were 60°C for 30 min. The E50 and E30 performed differently during storage. They showed different colour degradation patterns. For the bathochromic shift, the absorbance increased at 265 nm (phenolic substances), and that at 310 nm (acyl groups) occurred in E50. These three unique characteristics might indicate the event of intermolecular co-pigmentation between or among anthocyanin molecules that led to higher anthocyanin stability at 50°C (t0.5 24.78 days) than at 30°C (t0.5 14.28 days).
{"title":"UV-visible light spectra of Clitoria ternatea L. flower extract during aqueous extraction and storage","authors":"A. Marpaung, Andara Paramaputri","doi":"10.47836/ifrj.30.3.18","DOIUrl":"https://doi.org/10.47836/ifrj.30.3.18","url":null,"abstract":"Spectrophotometry is a widespread method to observe anthocyanin content, colour quality, and chemical change of an anthocyanin-source extract. The spectrogram may vary due to the extraction method, and may also change over time. The present work studied the spectrophotometric varieties of butterfly pea flower (Clitoria ternatea L.) extract using the cell wall disruption method (mortar-pestle: MP; freezing-thawing: FT; 6 min steam blanching: SB; and 6 min hot water blanching: WB) and aqueous extraction temperature (30, 45, and 60°C) for 210 min. The absorbance was monitored every 30 min. The UV-vis light absorbance shift of the extract during storage at 30°C (E30) and 50°C (E50) was also evaluated. Both SB and WB resulted in extracts with a similar spectrogram and effectively suppressed the brown colour development (browning index: 0.27 ± 0.02 and 0.3 ± 0.01, respectively). The cell wall disruption method did not affect the total anthocyanin. Therefore, the blanching process before extraction was appropriate. The most effective extraction parameter yielding the highest anthocyanin and phenolic substances were 60°C for 30 min. The E50 and E30 performed differently during storage. They showed different colour degradation patterns. For the bathochromic shift, the absorbance increased at 265 nm (phenolic substances), and that at 310 nm (acyl groups) occurred in E50. These three unique characteristics might indicate the event of intermolecular co-pigmentation between or among anthocyanin molecules that led to higher anthocyanin stability at 50°C (t0.5 24.78 days) than at 30°C (t0.5 14.28 days).","PeriodicalId":13754,"journal":{"name":"international food research journal","volume":"30 1","pages":""},"PeriodicalIF":0.8,"publicationDate":"2023-06-21","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"82428159","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"农林科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
C. Chandan, H. A. Pardhe, K. Nagappan, B. Sushma, M. Jeyaprakash
The relationship between vitamin A, retinol activity, and eye health has been briefly elucidated. Based on certain reports, vitamin A and retinol activity can help overcome vitamin A insufficiency i.e., xerophthalmia. The present review assesses vitamin A sources, β-carotene and β-cryptoxanthin in vitamin A metabolism, retinol and xerophthalmia, and new application of vitamin A in mitigating xerophthalmia. Vitamin A and its precursors are sensitive, and could lose their biological activity when exposed to light or oxygen. In this context, encapsulation may act as a protection strategy for enhancing vitamin A's biological functions under adverse conditions. With the belief that vitamin A and retinol activity have a long-term association with xerophthalmia, the present review discusses the relationship between vitamin A consumption and its precursors, as well as the physiological effects of vitamin A on xerophthalmia. In conclusion, further research using free and encapsulated forms of vitamin A to prevent vitamin A deficiency and manage xerophthalmia should be emphasised.
{"title":"Formulation and stability enhancement using vitamin A encapsulation in ocular abnormalities: A scientific review","authors":"C. Chandan, H. A. Pardhe, K. Nagappan, B. Sushma, M. Jeyaprakash","doi":"10.47836/ifrj.30.3.02","DOIUrl":"https://doi.org/10.47836/ifrj.30.3.02","url":null,"abstract":"The relationship between vitamin A, retinol activity, and eye health has been briefly elucidated. Based on certain reports, vitamin A and retinol activity can help overcome vitamin A insufficiency i.e., xerophthalmia. The present review assesses vitamin A sources, β-carotene and β-cryptoxanthin in vitamin A metabolism, retinol and xerophthalmia, and new application of vitamin A in mitigating xerophthalmia. Vitamin A and its precursors are sensitive, and could lose their biological activity when exposed to light or oxygen. In this context, encapsulation may act as a protection strategy for enhancing vitamin A's biological functions under adverse conditions. With the belief that vitamin A and retinol activity have a long-term association with xerophthalmia, the present review discusses the relationship between vitamin A consumption and its precursors, as well as the physiological effects of vitamin A on xerophthalmia. In conclusion, further research using free and encapsulated forms of vitamin A to prevent vitamin A deficiency and manage xerophthalmia should be emphasised.","PeriodicalId":13754,"journal":{"name":"international food research journal","volume":"37 1","pages":""},"PeriodicalIF":0.8,"publicationDate":"2023-06-21","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"73000749","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"农林科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Weiming Gu, Quanfeng Huang, Jianxia Sun, Dan Liu, X. Duan
Silver nanoparticles (AgNPs) were synthesised using banana flower extract (BFE) as a reducing and stabilising agent. Spherical, well-dispersed, and stable AgNPs were formed and characterised by ultraviolet-visible spectroscopy (UV-vis), transmission electron microscopy (TEM), X-ray diffraction (XRD), Fourier-transform infrared spectroscopy (FT-IR), thermal gravimetric analysis (TGA), and zeta potential. The in vitro antimicrobial properties of AgNPs against Staphylococcus aureus and Escherichia coli were then investigated. The minimum inhibitory concentration (MIC) of AgNPs against S. aureus and E. coli were 32 and 16 μg/mL, respectively. E. coli was more sensitive to AgNPs than S. aureus due to differences in cell wall structures of the bacteria. Regarding the bactericidal mechanisms of AgNPs, an increase in cell permeability and a distinctive deformation in cellular morphology was observed. The antibacterial effect decreased with the addition of the antioxidant N-acetyl-l-cysteine (NAC) which acted as ROS scavenger. In summary, the antibacterial mechanism was likely a combination of cell membrane damage and ROS induction.
{"title":"Green synthesis of silver nanoparticles using banana flower extract, and their antibacterial activity","authors":"Weiming Gu, Quanfeng Huang, Jianxia Sun, Dan Liu, X. Duan","doi":"10.47836/ifrj.30.3.06","DOIUrl":"https://doi.org/10.47836/ifrj.30.3.06","url":null,"abstract":"Silver nanoparticles (AgNPs) were synthesised using banana flower extract (BFE) as a reducing and stabilising agent. Spherical, well-dispersed, and stable AgNPs were formed and characterised by ultraviolet-visible spectroscopy (UV-vis), transmission electron microscopy (TEM), X-ray diffraction (XRD), Fourier-transform infrared spectroscopy (FT-IR), thermal gravimetric analysis (TGA), and zeta potential. The in vitro antimicrobial properties of AgNPs against Staphylococcus aureus and Escherichia coli were then investigated. The minimum inhibitory concentration (MIC) of AgNPs against S. aureus and E. coli were 32 and 16 μg/mL, respectively. E. coli was more sensitive to AgNPs than S. aureus due to differences in cell wall structures of the bacteria. Regarding the bactericidal mechanisms of AgNPs, an increase in cell permeability and a distinctive deformation in cellular morphology was observed. The antibacterial effect decreased with the addition of the antioxidant N-acetyl-l-cysteine (NAC) which acted as ROS scavenger. In summary, the antibacterial mechanism was likely a combination of cell membrane damage and ROS induction.","PeriodicalId":13754,"journal":{"name":"international food research journal","volume":"24 1","pages":""},"PeriodicalIF":0.8,"publicationDate":"2023-06-21","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"82843985","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"农林科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Xun Gong, Shiping Zou, Wénwén Liú, Zhihai Yu, Xiaozhu Liu
Yeast communities during spontaneous fermentation of red and white pitaya were characterised and compared to provide a reference for the isolation of pitaya yeast strains. Using Illumina MiSeq high-throughput sequencing technology, we investigated the composition and diversities of yeast communities during five stages of spontaneous fermentation (1, 3, 5, 7, and 15 d), and the results showed 584,055 and 699,120 valid sequences from red and white pitaya, respectively. The sequences were classified into 86 and 42 operational taxonomic units, then assigned to 69 species in 49 genera (red pitaya) and 37 species in 32 genera (white pitaya). Taxonomic composition and diversity analysis results showed high yeast diversity during the early stage of spontaneous fermentation (RF1) for red pitaya, and during the middle stage (WF5) for white pitaya fermentation. The dominant yeast species was unclassified_o_Saccharomycetales in red pitaya, and Clavispora opuntiae in white pitaya, and these species showed opposite trends during red and white pitaya fermentation. One-way ANOVA showed highly significant differences in unclassified_o_Saccharomycetales (p ≤ 0.01) in red pitaya, and in Clavispora opuntiae (p ≤ 0.001) in white pitaya across the five spontaneous fermentation stages. In addition, phylogenetic analysis revealed that unclassified_o_Saccharomycetales and Clavispora opuntiae were positioned farthest from other yeast species. Overall, yeast community diversity during spontaneous fermentation was higher in red rather than white pitaya.
{"title":"Analysis of yeast diversity during spontaneous fermentation of red and white pitaya","authors":"Xun Gong, Shiping Zou, Wénwén Liú, Zhihai Yu, Xiaozhu Liu","doi":"10.47836/ifrj.30.3.21","DOIUrl":"https://doi.org/10.47836/ifrj.30.3.21","url":null,"abstract":"Yeast communities during spontaneous fermentation of red and white pitaya were characterised and compared to provide a reference for the isolation of pitaya yeast strains. Using Illumina MiSeq high-throughput sequencing technology, we investigated the composition and diversities of yeast communities during five stages of spontaneous fermentation (1, 3, 5, 7, and 15 d), and the results showed 584,055 and 699,120 valid sequences from red and white pitaya, respectively. The sequences were classified into 86 and 42 operational taxonomic units, then assigned to 69 species in 49 genera (red pitaya) and 37 species in 32 genera (white pitaya). Taxonomic composition and diversity analysis results showed high yeast diversity during the early stage of spontaneous fermentation (RF1) for red pitaya, and during the middle stage (WF5) for white pitaya fermentation. The dominant yeast species was unclassified_o_Saccharomycetales in red pitaya, and Clavispora opuntiae in white pitaya, and these species showed opposite trends during red and white pitaya fermentation. One-way ANOVA showed highly significant differences in unclassified_o_Saccharomycetales (p ≤ 0.01) in red pitaya, and in Clavispora opuntiae (p ≤ 0.001) in white pitaya across the five spontaneous fermentation stages. In addition, phylogenetic analysis revealed that unclassified_o_Saccharomycetales and Clavispora opuntiae were positioned farthest from other yeast species. Overall, yeast community diversity during spontaneous fermentation was higher in red rather than white pitaya.","PeriodicalId":13754,"journal":{"name":"international food research journal","volume":"18 1","pages":""},"PeriodicalIF":0.8,"publicationDate":"2023-06-21","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"84744114","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"农林科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
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