Abstract The enhancement of the sensitivity for anthocyanin-based indicator films in food freshness monitoring in real time is important for application. In this study, hydrophilic silica aerogel (SiO2NA) was incorporated into corn starch (CS)/chitosan (CH)/rose anthocyanins (RACNs)-encapsulated potato amylopectin nanoparticles (APNPs) composite film to increase the sensitivity for shrimp freshness detection. Microstructure of films revealed that the gas absorption capacity was improved by amorphous SiO2NA via hydrogen interactions. The pore size (1.74-5.60 times), pore volume (3.92-5.60 times), and specific surface area (2.21-2.34 times) of films increased with the addition of SiO2NA. The sensing to NH3 and pH, and reversibility of films were also reinforced. Meanwhile, the pH-responsible films containing SiO2NA changed visibly in color from purple-red to orange-gray and finally to grey, enabling an effective monitoring of shrimp freshness during storage at 4℃. Thus, anthocyanin-based indicator films with improved sensitivity by adding SiO2NA were successfully designed for monitoring shrimp freshness.
{"title":"High sensitivity intelligent packaging films harnessing rose anthocyanins and hydrophilic silica aerogel for visually food freshness monitoring","authors":"Wenjun Wu, Luman Zheng, Jiahao Yu, Liming Liu, Gulden Goksen, Ping Shao","doi":"10.1093/fqsafe/fyad051","DOIUrl":"https://doi.org/10.1093/fqsafe/fyad051","url":null,"abstract":"Abstract The enhancement of the sensitivity for anthocyanin-based indicator films in food freshness monitoring in real time is important for application. In this study, hydrophilic silica aerogel (SiO2NA) was incorporated into corn starch (CS)/chitosan (CH)/rose anthocyanins (RACNs)-encapsulated potato amylopectin nanoparticles (APNPs) composite film to increase the sensitivity for shrimp freshness detection. Microstructure of films revealed that the gas absorption capacity was improved by amorphous SiO2NA via hydrogen interactions. The pore size (1.74-5.60 times), pore volume (3.92-5.60 times), and specific surface area (2.21-2.34 times) of films increased with the addition of SiO2NA. The sensing to NH3 and pH, and reversibility of films were also reinforced. Meanwhile, the pH-responsible films containing SiO2NA changed visibly in color from purple-red to orange-gray and finally to grey, enabling an effective monitoring of shrimp freshness during storage at 4℃. Thus, anthocyanin-based indicator films with improved sensitivity by adding SiO2NA were successfully designed for monitoring shrimp freshness.","PeriodicalId":12427,"journal":{"name":"Food Quality and Safety","volume":"9 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2023-11-11","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"135086558","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"农林科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Abstract Dried red chilies are widely used spices in the world and it is susceptible to contamination by fungi and fungal toxins. Roasting is a common way of processing dried red chilies. This study explored the effects of Aspergillus niger and ochratoxin A (OTA) contamination on the quality of roasted chilies, and the fate of OTA during the roasting process. Three optimum roasting conditions (140°C × 8 min, 160°C × 6 min and 180°C × 4 min) were screened out by a combination of instrumental and manual sensory evaluations. Under these roasting conditions A. niger and OTA contamination diminished the quality and tastes of roasted chilies. With the increase of roasting temperature and time duration, OTA contents and mold counts gradually decreased, together with the DNA degradation of OTA biosynthesis related genes of A. niger in roasted chilies. The roasting condition at 180°C × 4 min showed the great decomposition effect on OTA, while also maintaining the good sensory quality of roasted chilies. This study shed light on the fate of OTA and during chili roasting process.
{"title":"Fate of ochratoxin A in dried red chilies during roasting process","authors":"Xiao Xiao, Jiang Chen, Qiujin Zhu, Jing Wan","doi":"10.1093/fqsafe/fyad054","DOIUrl":"https://doi.org/10.1093/fqsafe/fyad054","url":null,"abstract":"Abstract Dried red chilies are widely used spices in the world and it is susceptible to contamination by fungi and fungal toxins. Roasting is a common way of processing dried red chilies. This study explored the effects of Aspergillus niger and ochratoxin A (OTA) contamination on the quality of roasted chilies, and the fate of OTA during the roasting process. Three optimum roasting conditions (140°C × 8 min, 160°C × 6 min and 180°C × 4 min) were screened out by a combination of instrumental and manual sensory evaluations. Under these roasting conditions A. niger and OTA contamination diminished the quality and tastes of roasted chilies. With the increase of roasting temperature and time duration, OTA contents and mold counts gradually decreased, together with the DNA degradation of OTA biosynthesis related genes of A. niger in roasted chilies. The roasting condition at 180°C × 4 min showed the great decomposition effect on OTA, while also maintaining the good sensory quality of roasted chilies. This study shed light on the fate of OTA and during chili roasting process.","PeriodicalId":12427,"journal":{"name":"Food Quality and Safety","volume":"7 23","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2023-11-11","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"135086301","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"农林科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Abstract Histone acetyltransferase (HAT) catalyzes histone acetylation and is involved in plant growth and development and stress responses. Here, 37 CitHAT genes were identified in Citrus clementina. Their physicochemical properties, chromosomal location, gene structure, conserved domain and motif, and cis-acting elements were characterized. CitHATs were classified into four subfamilies based on protein sequence homology, which was strongly supported by gene structure, conserved domain, and motif analysis. The cis-acting elements in gene promoter regions were predicted to be associated with the regulation of plant growth, stress resistance, and response to hormones. Phenotypic and transcriptomic analyses of citrus callus with the mock treatment and HAT inhibitor treatment revealed that increased citric acid content in inhibitor treatment may be attributed to differential expression of CitPEPCK2 and CitGS2, which may be due to the hypo-acetylation of histone H3. The expression patterns of CitHATs in citrus fruit development stages showed that CitHAG11 and CitHAG28 exhibited a negative correlation with citric acid content. Our study associates the potential function of histone acetyltransferases in citrate metabolism and extends the molecular mechanism of citrate metabolism in fruits.
{"title":"Genome-wide identification of the histone acetyltransferase gene family in <i>Citrus clementina</i> and its potential roles in citrate metabolism","authors":"Xia-hui Lin, Yan-na Shi, Sheng-chao Liu, Xin-cheng Liu, Ming-lei Zhang, Bo Zhang, Shao-jia Li, Kun-song Chen","doi":"10.1093/fqsafe/fyad052","DOIUrl":"https://doi.org/10.1093/fqsafe/fyad052","url":null,"abstract":"Abstract Histone acetyltransferase (HAT) catalyzes histone acetylation and is involved in plant growth and development and stress responses. Here, 37 CitHAT genes were identified in Citrus clementina. Their physicochemical properties, chromosomal location, gene structure, conserved domain and motif, and cis-acting elements were characterized. CitHATs were classified into four subfamilies based on protein sequence homology, which was strongly supported by gene structure, conserved domain, and motif analysis. The cis-acting elements in gene promoter regions were predicted to be associated with the regulation of plant growth, stress resistance, and response to hormones. Phenotypic and transcriptomic analyses of citrus callus with the mock treatment and HAT inhibitor treatment revealed that increased citric acid content in inhibitor treatment may be attributed to differential expression of CitPEPCK2 and CitGS2, which may be due to the hypo-acetylation of histone H3. The expression patterns of CitHATs in citrus fruit development stages showed that CitHAG11 and CitHAG28 exhibited a negative correlation with citric acid content. Our study associates the potential function of histone acetyltransferases in citrate metabolism and extends the molecular mechanism of citrate metabolism in fruits.","PeriodicalId":12427,"journal":{"name":"Food Quality and Safety","volume":"24 2","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2023-11-11","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"135087116","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"农林科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Abstract The food additive titanium dioxide is commonly utilized to enhance the appearance and flavor of food products. However, this substance has been linked to gastrointestinal disorders. The aim of this study was to investigate the impact of dietary exposure of titanium dioxide E171 on Listeria monocytogenes infection in mice. Mice were mainly divided to control, LM group (L. monocytogenes infection) and E171+LM group (E171 supplementation before L. monocytogenes infection). Pre-exposure to E171 resulted in increased bacterial counts in the liver, spleen, ileum, colon, mesenteric lymph nodes and feces of mice after L. monocytogenes infection. Moreover, E171 exposure increased the levels pro-inflammatory cytokines while attenuating the levels of anti-inflammatory cytokines in mice infected with L. monocytogenes. Meanwhile, mice in E171+LM group exhibited considerably more severe colonic inflammation and worse intestinal barrier function than mice in LM group. The 16S rRNA gene sequencing revealed a shift in the composition of the gut microbiota of mice in E171+LM group, characterized by a decrease in the relative abundance of Firmicutes and a decrease in the Firmicutes-to-Bacteroidetes ratio. The levels of acetate, butyrate, and isobutyrate were markedly decreased within the cecum of mice in E171+LM group in comparison to mice in LM group. In conclusion, these results suggest that E171 exposure could exacerbate L. monocytogenes infection in mice, which may provide useful information for future risk assessment of this commonly used food additive.
{"title":"Titanium dioxide E171 consumption exacerbates <i>Listeria monocytogenes</i> infection in mice","authors":"Yue Teng, Ailin Wang, Dongyun Zhao, Guopeng Li, Longze Liu, Yue Zou, Xiaodong Xia","doi":"10.1093/fqsafe/fyad048","DOIUrl":"https://doi.org/10.1093/fqsafe/fyad048","url":null,"abstract":"Abstract The food additive titanium dioxide is commonly utilized to enhance the appearance and flavor of food products. However, this substance has been linked to gastrointestinal disorders. The aim of this study was to investigate the impact of dietary exposure of titanium dioxide E171 on Listeria monocytogenes infection in mice. Mice were mainly divided to control, LM group (L. monocytogenes infection) and E171+LM group (E171 supplementation before L. monocytogenes infection). Pre-exposure to E171 resulted in increased bacterial counts in the liver, spleen, ileum, colon, mesenteric lymph nodes and feces of mice after L. monocytogenes infection. Moreover, E171 exposure increased the levels pro-inflammatory cytokines while attenuating the levels of anti-inflammatory cytokines in mice infected with L. monocytogenes. Meanwhile, mice in E171+LM group exhibited considerably more severe colonic inflammation and worse intestinal barrier function than mice in LM group. The 16S rRNA gene sequencing revealed a shift in the composition of the gut microbiota of mice in E171+LM group, characterized by a decrease in the relative abundance of Firmicutes and a decrease in the Firmicutes-to-Bacteroidetes ratio. The levels of acetate, butyrate, and isobutyrate were markedly decreased within the cecum of mice in E171+LM group in comparison to mice in LM group. In conclusion, these results suggest that E171 exposure could exacerbate L. monocytogenes infection in mice, which may provide useful information for future risk assessment of this commonly used food additive.","PeriodicalId":12427,"journal":{"name":"Food Quality and Safety","volume":"1 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2023-10-27","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"136316984","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"农林科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Abstract Contamination of meats and meat products by pathogenic microorganisms is responsible for significant percentage of outbreaks of foodborne illness. There are also concerns over the carcinogenic potential of dietary nitrate and nitrite in the processed meat products. The past few decades have seen extensive search for novel technologies alternative to synthetic chemical preservatives to reduce the level of contamination of foods by pathogenic and spoilage microbes. This review provides general overview of natural preservatives with potential applications in the meat industry, including phages and their endolysins, bacteriocins, microbial lipopeptides, antimicrobial peptides of plant or insect origin, and essential oils or extracts of plant origins. Instead of providing summary data from the published literature, we attempted to elaborate the challenges facing the development of novel natural preservatives as the antimicrobial hurdles, taking into consideration of the fact of sharp contrast between extensive studies in this particular field and very limited industrial use. More specifically, we emphasized the great importance of having streamlined approaches and methodological guidelines in research and development of natural preservatives so that the journey to their industrial use for safer meats and meat products could be shortened or made easier.
{"title":"Can natural preservatives serve as a new line of protective technology against bacterial pathogens in meat and meat products?","authors":"Changyong Cheng, Lingli Jiang, Xiaoliang Li, Houhui Song, Weihuan Fang","doi":"10.1093/fqsafe/fyad049","DOIUrl":"https://doi.org/10.1093/fqsafe/fyad049","url":null,"abstract":"Abstract Contamination of meats and meat products by pathogenic microorganisms is responsible for significant percentage of outbreaks of foodborne illness. There are also concerns over the carcinogenic potential of dietary nitrate and nitrite in the processed meat products. The past few decades have seen extensive search for novel technologies alternative to synthetic chemical preservatives to reduce the level of contamination of foods by pathogenic and spoilage microbes. This review provides general overview of natural preservatives with potential applications in the meat industry, including phages and their endolysins, bacteriocins, microbial lipopeptides, antimicrobial peptides of plant or insect origin, and essential oils or extracts of plant origins. Instead of providing summary data from the published literature, we attempted to elaborate the challenges facing the development of novel natural preservatives as the antimicrobial hurdles, taking into consideration of the fact of sharp contrast between extensive studies in this particular field and very limited industrial use. More specifically, we emphasized the great importance of having streamlined approaches and methodological guidelines in research and development of natural preservatives so that the journey to their industrial use for safer meats and meat products could be shortened or made easier.","PeriodicalId":12427,"journal":{"name":"Food Quality and Safety","volume":"69 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2023-10-19","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"135778312","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"农林科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Abstract Fruit quality is both a consumer demand and an important goal for horticultural breeding. The exploration of quality-related genes provides targets to create high-quality germplasm using biotechnology, of which transcription factors (TFs) exhibit dosage effects compared with structural genes. Tomato, an important horticultural crop, as well as model fruit has been widely studied. Here, we focused on TFs with potential utilization value that control appearance (e.g., shape, pigment) and internal (e.g., flavor, texture, shelf life and health benefits) quality in tomato. Additionally, potential strategies to generate high-quality tomato fruit are discussed.
{"title":"Transcription factors involved in tomato fruit quality improvement","authors":"Yanna Shi, Zhengrong Dai, Kunsong Chen","doi":"10.1093/fqsafe/fyad050","DOIUrl":"https://doi.org/10.1093/fqsafe/fyad050","url":null,"abstract":"Abstract Fruit quality is both a consumer demand and an important goal for horticultural breeding. The exploration of quality-related genes provides targets to create high-quality germplasm using biotechnology, of which transcription factors (TFs) exhibit dosage effects compared with structural genes. Tomato, an important horticultural crop, as well as model fruit has been widely studied. Here, we focused on TFs with potential utilization value that control appearance (e.g., shape, pigment) and internal (e.g., flavor, texture, shelf life and health benefits) quality in tomato. Additionally, potential strategies to generate high-quality tomato fruit are discussed.","PeriodicalId":12427,"journal":{"name":"Food Quality and Safety","volume":"35 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2023-10-19","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"135730293","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"农林科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Abstract Thidiazuron (TDZ) is used for the expansion of fruits, but excessive levels of TDZ lead to a decline in fruit quality. However, the appropriate concentration of TDZ for mango expansion without a decline in quality is not clear. In the present study, four different concentrations (5 mg/L, 10 mg/L, 15 mg/L and 20 mg/L) of TDZ were applied via spraying on mango plants, and several physiological and biochemical indicators were measured. The results showed that TDZ treatment significantly increased mango fruit size and single-fruit weight. In mango fruit, TDZ treatment decreased the disease index, delayed the increase in the malondialdehyde (MDA) and H2O2 content, and maintained firmness and antioxidant capacities at a relatively high level during postharvest storage. At the same time, TDZ treatment delayed the decrease in the GA3, IAA and JA contents in mango and reduced the accumulation of ABA and ethylene. These trends are consistent with TDZ treatment leading to extension of the shelf life of mango. Furthermore, ethylene biosynthesis, signal transduction and cell wall dismantling-related genes were investigated. The results indicated that the expression of the MiACS, MiETR2, MiERF113, MiERF010, MiERF054, MiEXP, MiPG14, MiPG21, MiCEL and MiPEL genes in mango was inhibited under TDZ treatment compared with the control. In summary, TDZ treatment can significantly increase the size and weight of mango fruit and can extend its shelf life. The most suitable concentration is 10~15 mg/L TDZ, which will not affect the quality of mango fruit.
{"title":"Effects of thidiazuron on the quality and storage properties of mango fruit during postharvest","authors":"Tangxin Jiang, Cong Luo, Wen Wan, Rongzhen Liang, Tingting Lu, Yuze Li, Fangfang Xie, Canbin Chen, Xi Li, Xiaona Xie, Xinhua He","doi":"10.1093/fqsafe/fyad047","DOIUrl":"https://doi.org/10.1093/fqsafe/fyad047","url":null,"abstract":"Abstract Thidiazuron (TDZ) is used for the expansion of fruits, but excessive levels of TDZ lead to a decline in fruit quality. However, the appropriate concentration of TDZ for mango expansion without a decline in quality is not clear. In the present study, four different concentrations (5 mg/L, 10 mg/L, 15 mg/L and 20 mg/L) of TDZ were applied via spraying on mango plants, and several physiological and biochemical indicators were measured. The results showed that TDZ treatment significantly increased mango fruit size and single-fruit weight. In mango fruit, TDZ treatment decreased the disease index, delayed the increase in the malondialdehyde (MDA) and H2O2 content, and maintained firmness and antioxidant capacities at a relatively high level during postharvest storage. At the same time, TDZ treatment delayed the decrease in the GA3, IAA and JA contents in mango and reduced the accumulation of ABA and ethylene. These trends are consistent with TDZ treatment leading to extension of the shelf life of mango. Furthermore, ethylene biosynthesis, signal transduction and cell wall dismantling-related genes were investigated. The results indicated that the expression of the MiACS, MiETR2, MiERF113, MiERF010, MiERF054, MiEXP, MiPG14, MiPG21, MiCEL and MiPEL genes in mango was inhibited under TDZ treatment compared with the control. In summary, TDZ treatment can significantly increase the size and weight of mango fruit and can extend its shelf life. The most suitable concentration is 10~15 mg/L TDZ, which will not affect the quality of mango fruit.","PeriodicalId":12427,"journal":{"name":"Food Quality and Safety","volume":"28 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2023-10-14","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"135803776","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"农林科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Abstract The effect of gum tragacanth (GT) and sodium alginate (SA) active coatings incorporated with epigallocatechin gallate (EGCG, 0.16%, 0.32% and 0.64%, respectively) on the quality of large yellow croaker fillets was evaluated during superchilling storage at -3 ℃ for 42 days. The results revealed that the GT-SA-EGCG active coatings delayed the microbial spoilage via reducing the numbers of total viable counts, Pseudomonas spp. and psychrophiles bacteria, retarded degradation of the physical properties of water holding capacity, cooking loss, color, odor and texture. GT-SA-EGCG coatings could also maintain the fillets’ freshness by keeping lower total volatile basic nitrogen, K value and histidine content, inhibiting myofibrillar protein degradation during superchilling storage. These results suggested that the active coatings embedded with GT-SA-EGCG could be used as a preservative to enhance the quality of large yellow croaker and prolong the shelf life by 7-14 days during superchilling storage at -3 ℃.
{"title":"Effect of gum tragacanth-sodium alginate coatings incorporated with epigallocatechin gallate on the quality and shelf life of large yellow croaker (<i>Larimichthys crocea</i>) during superchilling storage","authors":"Zhilong Xu, Juxin Pei, Jun Mei, Huijie Yu, Siyuan Chu, Jing Xie","doi":"10.1093/fqsafe/fyad039","DOIUrl":"https://doi.org/10.1093/fqsafe/fyad039","url":null,"abstract":"Abstract The effect of gum tragacanth (GT) and sodium alginate (SA) active coatings incorporated with epigallocatechin gallate (EGCG, 0.16%, 0.32% and 0.64%, respectively) on the quality of large yellow croaker fillets was evaluated during superchilling storage at -3 ℃ for 42 days. The results revealed that the GT-SA-EGCG active coatings delayed the microbial spoilage via reducing the numbers of total viable counts, Pseudomonas spp. and psychrophiles bacteria, retarded degradation of the physical properties of water holding capacity, cooking loss, color, odor and texture. GT-SA-EGCG coatings could also maintain the fillets’ freshness by keeping lower total volatile basic nitrogen, K value and histidine content, inhibiting myofibrillar protein degradation during superchilling storage. These results suggested that the active coatings embedded with GT-SA-EGCG could be used as a preservative to enhance the quality of large yellow croaker and prolong the shelf life by 7-14 days during superchilling storage at -3 ℃.","PeriodicalId":12427,"journal":{"name":"Food Quality and Safety","volume":"32 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2023-10-14","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"135767398","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"农林科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Ye Tian, Wenshuo Fan, Weijian Lu, Guanjun Zhang, Zhengshi Chang
Abstract Pulsed electric field (PEF) technology is a highly promising nonthermal processing technique, which holds great potential for sterilizing liquid food. The effectiveness of this treatment depends on two crucial factors: pulse parameters and the structure of the processor. In this study, we focus on optimizing the shape of insulators within the PEF processor to improve the sterilization effect. This research provides a reliable technical reference for designing industrial equipment. The numerical simulation of multi-physics fields was employed to analyze the temperature, electric field, and fluid field distributions for different insulators. Ultimately, the geometric structure of the insulator was optimized by embedding a 0.7 mm arc. Sterilization experiments were then conducted on E. coli and S. aureus suspension with the conductivity similar to real grapefruit juice. The sterilization effect of the processor with the optimized structure and the maximum applied voltage was examined at the same driven frequency. The results indicate that compared to the original structure, there is an increase in withstanding voltage by 5-10 kV while maintaining significantly improved bactericidal effects at the same applied voltage. Furthermore, we preliminarily discussed the sterilization mechanism by combining electroporation theory with S. aureus’ electroporation threshold.
{"title":"Structure optimization of Pulsed Electric Field processor and its sterilization effect","authors":"Ye Tian, Wenshuo Fan, Weijian Lu, Guanjun Zhang, Zhengshi Chang","doi":"10.1093/fqsafe/fyad044","DOIUrl":"https://doi.org/10.1093/fqsafe/fyad044","url":null,"abstract":"Abstract Pulsed electric field (PEF) technology is a highly promising nonthermal processing technique, which holds great potential for sterilizing liquid food. The effectiveness of this treatment depends on two crucial factors: pulse parameters and the structure of the processor. In this study, we focus on optimizing the shape of insulators within the PEF processor to improve the sterilization effect. This research provides a reliable technical reference for designing industrial equipment. The numerical simulation of multi-physics fields was employed to analyze the temperature, electric field, and fluid field distributions for different insulators. Ultimately, the geometric structure of the insulator was optimized by embedding a 0.7 mm arc. Sterilization experiments were then conducted on E. coli and S. aureus suspension with the conductivity similar to real grapefruit juice. The sterilization effect of the processor with the optimized structure and the maximum applied voltage was examined at the same driven frequency. The results indicate that compared to the original structure, there is an increase in withstanding voltage by 5-10 kV while maintaining significantly improved bactericidal effects at the same applied voltage. Furthermore, we preliminarily discussed the sterilization mechanism by combining electroporation theory with S. aureus’ electroporation threshold.","PeriodicalId":12427,"journal":{"name":"Food Quality and Safety","volume":"34 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2023-10-13","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"135853316","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"农林科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Abstract Tropane alkaloids (TAs) are a kind of plant secondary metabolites that mainly originate from Solanaceae. They have potent anticholinergic activity, and are well-known anticholinergic drugs, but also have been reported as plant toxins. Many studies have been conducted on TAs, but no scientometric research has been performed. This study aimed to expound the knowledge network and development of the field of TAs and predict the emerging development topics based on bibliometrics. In particular, this research combined VOSviewer and CiteSpace for visualization and covered 1,298 related scientific publications (1953–2022). The research on TAs is rapidly developing, with the participation of 86 countries, 1,129 research institutions, and 4,087 researchers. China, the University of Geneva, and Christen P. are the most productive country, institutions, and researchers, respectively. Currently, the main research topics on TAs include biosynthesis, in vitro synthesis, chemical synthesis, and determination methods. Since 2018, the monitoring of TAs in food related to human health has shown citation burst characteristics, which is considered an emerging development trend in the future. The findings of this study will enable researchers to quickly tap into the knowledge background/structure of TAs from massive data to provide a reference for further research.
{"title":"Emerging tropane alkaloids: Global development and potential health threats","authors":"Zile Wang, Shiqi Chen, Pimiao Zheng, Zhenhui Ren, Huixia Zhang, Jing Zhang, Bing Shao, Congming Wu, Haiyang Jiang","doi":"10.1093/fqsafe/fyad043","DOIUrl":"https://doi.org/10.1093/fqsafe/fyad043","url":null,"abstract":"Abstract Tropane alkaloids (TAs) are a kind of plant secondary metabolites that mainly originate from Solanaceae. They have potent anticholinergic activity, and are well-known anticholinergic drugs, but also have been reported as plant toxins. Many studies have been conducted on TAs, but no scientometric research has been performed. This study aimed to expound the knowledge network and development of the field of TAs and predict the emerging development topics based on bibliometrics. In particular, this research combined VOSviewer and CiteSpace for visualization and covered 1,298 related scientific publications (1953–2022). The research on TAs is rapidly developing, with the participation of 86 countries, 1,129 research institutions, and 4,087 researchers. China, the University of Geneva, and Christen P. are the most productive country, institutions, and researchers, respectively. Currently, the main research topics on TAs include biosynthesis, in vitro synthesis, chemical synthesis, and determination methods. Since 2018, the monitoring of TAs in food related to human health has shown citation burst characteristics, which is considered an emerging development trend in the future. The findings of this study will enable researchers to quickly tap into the knowledge background/structure of TAs from massive data to provide a reference for further research.","PeriodicalId":12427,"journal":{"name":"Food Quality and Safety","volume":"52 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2023-10-13","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"135855015","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"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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