Frontiers in Sustainable Food Systems最新文献

{"title":"Uncovering QTLs for uppermost internode length and panicle exsertion in rice (Oryza sativa L.)","authors":"Bheemapura Shivakumar Harshitha, Vikram Jeet Singh, Shekharappa Nandakumar, Sonu Shekhawat, Brijesh Kumar Dixit, Shridhar Ragi, Deepak Saran, K. K. Vinod, Subbaiyan Gopal Krishnan, Ranjith Kumar Ellur, Nagarajan Mariappan, Haritha Bollinedi, Tapan Kumar Mondal, Ashok Kumar Singh, Prolay Kumar Bhowmick","doi":"10.3389/fsufs.2024.1470871","DOIUrl":"https://doi.org/10.3389/fsufs.2024.1470871","url":null,"abstract":"Uppermost internode length (UIL) and panicle exsertion are two important traits that contribute significantly to increased yield in rice. The present study was conducted using recombinant inbred lines (RILs) comprising 201 lines derived from RTN10B and IRG213. These RILs were evaluated at three different locations— Delhi, Karnal, and Aduthurai. We report the mapping of quantitative trait loci (QTLs) for uppermost internode length and the panicle exsertion ratio (PER), as well as QTLs for plant height (PH), tiller number, length of the second internode, length of the third internode, length from the flag leaf to the panicle tip (PFL), and panicle length (PL). Mapping was performed using a custom microsatellite linkage map constructed for the population, having a total span of 2077.1 cM with 104 markers. A total of 22 QTLs were identified for various traits, among which 19 were found distributed in four hotspots. A total of 11 major effect QTLs and 11 minor effect QTLs were identified for various internode length-related traits. Among the four QTLs identified for PFL, three QTLs— qPFL1.1 , qPFL1.2, and qPFL2.1 —co-localized with previously reported QTLs, while qPFL8.1 was a novel QTL. A major QTL hotspot was identified on chromosome 1, located at the marker interval of RM12055-RM320. The size of the major QTL hotspot on chromosome 1 was 1.4 Mb and contained a total of seven HEs for PER, PFL, PH, PL, UIL, SIL, and TIL. Based on the in-silico analysis of the major QTL hotspot on chromosome 1, we identified 15 putative candidate genes associated with internode length- and panicle-related traits. Furthermore, narrowing the genomic region through the fine mapping of the marker intervals facilitated the identification of candidate genes to enable more precise marker-assisted selection for uppermost internode length and panicle exsertion.","PeriodicalId":36666,"journal":{"name":"Frontiers in Sustainable Food Systems","volume":"8 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2024-11-27","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://public-pages-files-2025.frontiersin.org/journals/sustainable-food-systems/articles/10.3389/fsufs.2024.1470871/pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"147880042","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"农林科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Analysing the contribution of trees and green spaces to household nutrition security in eThekwini, KwaZulu-Natal, South Africa.","authors":"Qhelile Ntombikayise Bhebhe, Muthulisi Siwela, Temitope O Ojo, Simphiwe Innocentia Hlatshwayo, Tafadzwanashe Mabhaudhi, Rob Slotow, Mjabuliseni S C Ngidi","doi":"10.3389/fsufs.2024.1451656","DOIUrl":"10.3389/fsufs.2024.1451656","url":null,"abstract":"<p><p>Food from trees and green spaces can diversify diets and enhance food and nutrition security for households. However, sourcing food from these areas often receives little attention in addressing nutrition issues. This study assessed the contribution of trees and green spaces to household food consumption and nutrition in the eThekwini Municipal Area (EMA) located in KwaZulu-Natal South Africa, focusing on the Osindisweni and Maphephetheni communities, which are biologically diverse and face high poverty, unemployment, and food insecurity. Using stratified random sampling, 280 households were selected to complete questionnaires. Additionally, two Focus Group Discussions (FDG's) and key informant interviews were conducted with community members and municipal representatives. Data were analyzed using descriptive statistics, the Household Food Consumption Score (FCS), Ordered Logistic Regression and a thematic analysis was done to analyse responses from Focus Group Discussions. The results showed that 93.6% of households consumed acceptable diets, with only 5.0% in the borderline and 1.4% in the poor categories. Specifically, Osindisweni and Maphephetheni households reported 93.3% and 93.7% acceptable diets, respectively. Ordered logistic regression indicated that both cultivated and uncultivated green spaces, household size, number of dependants, as well as access to training, agricultural assistance, extension, and advisory services negatively correlated with nutrition security. While communities recognized the contributions of trees and green spaces, they believed that these sources alone were insufficient. It is concluded that consumption of products from trees and green spaces likely did not improve the nutrition security of the households. To improve household nutrition security in eThekwini, it is vital to foster collaboration among stakeholders, including nutritionists and extension agents. Strengthening the knowledge of extension officers regarding the harvesting and consumption of food from trees and green spaces is crucial for disseminating effective guidance to households, thereby enhancing nutrition outcomes.</p>","PeriodicalId":36666,"journal":{"name":"Frontiers in Sustainable Food Systems","volume":"8 ","pages":""},"PeriodicalIF":4.1,"publicationDate":"2024-11-25","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC7617612/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144020039","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"农林科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Preparation of edible film from sweet potato peel polyphenols: application in fresh fruit preservation","authors":"Zhenlin Zhang, Yanhong Wang, Xingtang Fang, Xi Chen, Zhichao Yin, Chunlei Zhang","doi":"10.3389/fsufs.2024.1470732","DOIUrl":"https://doi.org/10.3389/fsufs.2024.1470732","url":null,"abstract":"Introduction The demand for sustainable food packaging materials has led to the exploration of bioactive composite films. This study aimed to prepare and evaluate a composite film made from sweet potato peel polyphenols extract and sweet potato starch (SPS) for its potential use in food packaging. Methods The composite film was prepared by uniformly dispersing 0.4% sweet potato peel polyphenols in the SPS matrix. Physicochemical properties and functional characteristics were assessed, including mechanical properties, UV barrier, water and gas barrier properties, antioxidant activity, and antimicrobial abilities against Bacillus subtilis, Escherichia coli , and Staphylococcus aureus . The film's efficacy in food packaging was tested using fresh cherry tomatoes, stored at 4°C, to determine its impact on shelf life. Results The starch-based sweet potato peel polyphenols film demonstrated enhanced mechanical properties and excellent UV barrier properties. It showed improved water and gas barrier properties and strong antioxidant activity, with clearance rates above 90% for DPPH and ABTS radicals. The film also exhibited effective antimicrobial abilities against the tested bacteria. Food packaging experiments indicated that the film could extend the shelf life of fresh cherry tomatoes to 7 days when stored at 4°C. Discussion The results suggest that the developed composite film has significant potential as an eco-friendly food packaging material. Its multifunctional properties, including UV protection, barrier enhancement, antioxidant activity, and antimicrobial capabilities, make it a promising candidate for extending the shelf life of perishable foods. The film's performance in slowing spoilage and extending the shelf life of cherry tomatoes highlights its practical application prospects in the food industry.","PeriodicalId":36666,"journal":{"name":"Frontiers in Sustainable Food Systems","volume":"8 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2024-11-22","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.frontiersin.org/journals/sustainable-food-systems/articles/10.3389/fsufs.2024.1470732/pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"147909835","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"农林科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Use of dehydrated carrot (Daucus carota) pomace and almond (Prunus dulcis) powder for partial replacement of wheat flour in cake: effect on product quality and acceptability","authors":"Tusneem Kausar, Salah Laaraj, Ashiq Hussain, Younés Noutfia, Mohamed Bouhrim, Ramzi A. Mothana, Omar M. Noman, Aymen Mubashar, Nida Firdous, Shafiqa Ali, Shazia Yaqub, Kaoutar Elfazazi","doi":"10.3389/fsufs.2024.1443841","DOIUrl":"https://doi.org/10.3389/fsufs.2024.1443841","url":null,"abstract":"Introduction Carrot ( Daucus carota ) is a nutrient-dense root vegetable, and carrot pomace is a by-product of the juice extraction procedure, which is recognized a source of phytochemicals and functional components. Almonds ( Prunus dulcis ) are packed with a decent amount of nutrients and bioactives. Methods This study investigates the utilization of carrot pomace powder (CPP) and almond powder (AP) as partial substitutes for straight grade white flour (SGWF) in cakes to enhance their nutritional value and sensory appeal, while reducing waste from carrot processing. The aim is to assess the effects of incorporating CPP (at 5%, 10%, and 15%) and AP (at 5%) on the chemical composition and properties of cakes. Results and discussion Comparative analysis reveals that AP is rich in fat (13.8 ± 0.6%) and protein (31 ± 0.6%), while CPP excels in ash (5.0 ± 0.5%) and fiber (43.3 ± 3.3%) content. Furthermore, SGWF exhibits the highest moisture content. Water holding capacities for CPP and AP are 5.2 ± 0.2% and 5.0±0.1%, respectively, and oil holding capacities are 1.3 ± 0.1% and 1.8 ± 0.2%, respectively. Additionally, CPP contains higher levels of sodium, potassium, and calcium, while AP contains higher levels of magnesium, iron, and zinc compared to SGWF. The addition of CPP and AP increases the ash, fat, fiber, and protein contents of the cakes. Notably, cakes containing 80% SGWF, 15% CPP, and 5% AP show significantly higher total phenolic content (TPC) (125.5 ± 3.8 mg GAE/100 g), total flavonoid content (TFC) (58.4 ± 1.4 mg QE/100 g), and DPPH activity (17.6 ± 2.7%) compared to control cakes. Furthermore, a significant increment in mineral content is observed in cakes with high levels of CPP and AP. Sensory evaluations reveal high acceptance of cakes containing 15% CPP and 5% AP. In conclusion, this study suggests that the incorporation of CPP and AP into cakes can improve their nutritional profile, antioxidant activity, and sensory characteristics, offering a sustainable approach to bakery product development.","PeriodicalId":36666,"journal":{"name":"Frontiers in Sustainable Food Systems","volume":"8 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2024-11-14","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.frontiersin.org/journals/sustainable-food-systems/articles/10.3389/fsufs.2024.1443841/pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"147902719","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"农林科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Isolation, structural characterization, and hypoglycemic activity of polysaccharides from the stems of Panax ginseng C. A. Meyer","authors":"Weiwei Xu, Zhou We, Jinfeng Sun, Weiwei Chen, Wu Xing, Tong Guan, Yilin Zhao, Pengcheng Yang, Zhengyu Hu, Gao Li","doi":"10.3389/fsufs.2024.1500278","DOIUrl":"https://doi.org/10.3389/fsufs.2024.1500278","url":null,"abstract":"The purpose of this study was to obtain polysaccharides from Panax ginseng C. A. Meyer stems (PGSPs), agro-byproducts with development potential, and fully explore the potential value in P. ginseng stems. Two novel polysaccharides firstly from P. ginseng stems (PGSP-1 and PGSP-2) were obtained by water extraction and alcohol precipitation method and column chromatography, and then characterized by FT-IR, HPGPC, HPLC, SEM, TGA, GC–MS and NMR. The results demonstrated that PGSP-1 (Mw = 723.83 kDa) and PGSP-2 (Mw = 620.48 kDa) were characterized →4)- β -D-Gal p -(1→, →6)- α -D-Glc p -(1 → and →2)- α -L-Rha p -(1 → as the skeleton, →4,6)- β -D-Gal p -(1 → and →2,6)- α -D-Man p -(1 → as the cross junction, α -L-Araf-(1 → as the terminal unit, and PGSP-1 still contained →4)- β -D-Gal p , while PGSP-2 contained →4)- β -D-Xyl p -(1→, →3)- β -D-Glc p A-(1→, →4)- β -D-Gal p A-(1 →) and α -D-Glc p -(1→, with different microstructures and thermal stability. And the results of hypoglycemic activity revealed that both PGSP-1 and PGSP-2 showed excellent inhibitory activity against α -glucosidase and α -amylase, in which PGSP-2 had the better performance. The inhibition kinetics result showed that PGSPs on α -glucosidase and α -amylase were non-competitive type and mixed type inhibition. This study provided a theoretical basis for making full use of and exploiting the economic value of agro-byproducts such as P. ginseng stems and offered a theoretical reference for the effective utilization of PGSP as a functional component to prevent and reduce T2DM.","PeriodicalId":36666,"journal":{"name":"Frontiers in Sustainable Food Systems","volume":"8 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2024-11-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.frontiersin.org/journals/sustainable-food-systems/articles/10.3389/fsufs.2024.1500278/pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"147880081","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"农林科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"A hapten design strategy to enhance the selectivity of monoclonal antibodies against malachite green","authors":"Min-Fu Wu, Nuo Xu, Sha Li, Yi-Lan Huang, Minhua Wu, Jiadong Li, Ri-Sheng Chen, Wen-Ming Xiong, Yongjun Li, Hongtao Lei, Xinan Huang, Zhenlin Xu","doi":"10.3389/fsufs.2024.1490750","DOIUrl":"https://doi.org/10.3389/fsufs.2024.1490750","url":null,"abstract":"Malachite green (MG), a triphenylmethane dye, is used in the aquaculture industry as a disinfectant and insect repellent due to its potent bactericidal and pesticidal properties. However, its use poses potential environmental and health risks. This study analyzed and designed two haptens using computer simulation. Serum data confirmed the feasibility of introducing an arm at the dimethylamine group. Subsequently, a highly selective monoclonal antibody strain was successfully prepared based on the hapten. After optimizing the working conditions of indirect competitive enzyme-linked immunosorbent assay (IC-ELISA), the IC 50 value was 0.83 ng/mL, with a detection limit (IC 10 ) of 0.08 ng/mL and a linear range of 0.19–3.52 ng/mL. The developed monoclonal antibody exhibited a crossover rate of less than 0.1% with other similar structures and can be used to establish an immunoassay.","PeriodicalId":36666,"journal":{"name":"Frontiers in Sustainable Food Systems","volume":"8 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2024-10-31","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.frontiersin.org/journals/sustainable-food-systems/articles/10.3389/fsufs.2024.1490750/pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"147904785","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"农林科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"A covalent organic framework-derived pretreatment for pesticides in vegetables and fruits","authors":"Aijun Huang, Xiuxiu Dong, Si Hui Tan, Kai Chen, Meiling Zhang, Bingrong Li, Hao Deng, Fei He, Hui Ni, Hongwu Wang, Zijian Chen","doi":"10.3389/fsufs.2024.1472174","DOIUrl":"https://doi.org/10.3389/fsufs.2024.1472174","url":null,"abstract":"Sample pretreatment is an essential procedure in pesticide analysis, as the matrix effect can significantly influence the results. In this study, a covalent organic framework (COF) was synthesized using 1,2,4,5-tetrakis-(4-formylphenyl)benzene (TFPB) and benzidine (BD) to mitigate the matrix effect in vegetable and fruit samples. This COF was then used to develop a solid-phase extraction (CSPE) method. In addition, the COF was used to create a magnetic COF (MCOF) for use in magnetic solid-phase extraction (MSPE). The synthesized COF and MCOF were thoroughly characterized using scanning electron microscopy (SEM) for morphological analysis, Fourier-transform infrared spectroscopy (FT-IR) for chemical bond identification, and N 2 adsorption–desorption measurements for porosity and surface area assessment. Key pretreatment parameters such as buffers, dilution rate, sorbent dosage, extraction time, elution solvent, and reuse number were optimized. The developed CSPE and MSPE showed excellent purification ability for the matrix of vegetable and fruit samples. The reuse test demonstrated that the synthesized COF and MCOF can be reused up to 15 times. Moreover, the developed CSPE and MSPE showed acceptable recoveries in spiked recovery tests, suggesting that these pretreatment methods were feasible for sample purification in pesticide analysis.","PeriodicalId":36666,"journal":{"name":"Frontiers in Sustainable Food Systems","volume":"8 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2024-10-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.frontiersin.org/journals/sustainable-food-systems/articles/10.3389/fsufs.2024.1472174/pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"147881426","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"农林科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Transcriptomic response of minor millets to abiotic stresses","authors":"Gowthami Sanku, Ravikesavan Rajasekaran, N. Manikanda Boopathi, K. Iyanar, Vichangal Pridiuldi Santhanakrishnan, Vetriventhan Mani","doi":"10.3389/fsufs.2024.1435437","DOIUrl":"https://doi.org/10.3389/fsufs.2024.1435437","url":null,"abstract":"Global food and nutritional security are being threatened by abiotic stresses such as drought, salinity, cold, and heat, owing to the rapid and deleterious effects of climate change. Millets represent an incredibly promising agricultural crop in terms of their potential to ensure global food security by virtue of their resiliency against climate change and escalating demand for nutritious food and feed. Considering their durability against climate change and the increasing demand for nutritional food and feed, millets, which refers to the diverse class of small-seeded C4 panicoid grasses, endure remarkable potential for safeguarding the world’s food supply. With a rapid surge in the availability of genomic information through microarray and next-generation sequencing, transcriptomics facilitated the extensive examination and quantification of shifts brought about by abiotic stresses. This stipulates an imperative way of ascertaining the expression of vital genes. This technological advancement targeted toward deciphering the gene expression patterns underpinning the molecular mechanisms/pathways. Other techniques, for instance, genome-wide expression analysis which provides insights into the regulatory networks controlling the cellular processes, genome-wide location analysis which elucidates the control over genes by the transcriptional regulatory proteins, and genomic selection strengthens the reliability of stress tolerance predictions in millet breeding populations. This review emphasizes the impact of transcriptomics on millet improvement by collating the differentially expressed genes (DEGs), and transcription factors (TFs) specific to abiotic stress response in millets which could open advantageous avenues with intriguing opportunities in breeding cultivars for climate resilience.","PeriodicalId":36666,"journal":{"name":"Frontiers in Sustainable Food Systems","volume":"8 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2024-09-11","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://public-pages-files-2025.frontiersin.org/journals/sustainable-food-systems/articles/10.3389/fsufs.2024.1435437/pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"147901414","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"农林科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Unraveling the dynamic changes of volatile compounds during the rolling process of Congou black tea via GC-E-nose and GC–MS","authors":"Qiwei Wang, Daliang Shi, Jiajing Hu, Jiahao Tang, Xianxiu Zhou, Lilei Wang, Jialing Xie, Yongwen Jiang, Haibo Yuan, Yanqin Yang","doi":"10.3389/fsufs.2024.1436542","DOIUrl":"https://doi.org/10.3389/fsufs.2024.1436542","url":null,"abstract":"Rolling plays an important role in shaping the characteristic quality of black tea. However, the dynamic alterations in volatile compounds during the rolling process remain unclear, which hampers the quality control of black tea. In this study, the dynamic changes of volatile compounds in Congou black tea throughout the rolling process were explored by a combination of GC-E-Nose and GC–MS analysis. The results of PCA and PLS-DA by GC-E-Nose revealed significant alterations in the volatile profiles, particularly at the 15-min rolling stage. A total of 82 volatile compounds including eight categories were identified in Congou black tea during the rolling process. The most abundant volatiles were aldehydes, alcohols, and esters. Through the integration of variable importance in the projection &amp;gt;1 and p &amp;lt; 0.05, 21 volatile compounds were pinpointed as pivotal volatiles responsible for distinguishing diverse rolling processes. According to their pathways, glycoside-derived volatiles (GDVs) (such as linalool and geraniol) and fatty acid-derived volatiles (FADVs) (such as ( Z )-2-hexen-1-ol and hexanal) highlighted the pivotal role in the formation of the aroma of black tea during rolling process. GDVs, characterized by floral, honeyed, and fruity aromas, reached the lowest point at 35-min rolling and subsequently rebounded. FADVs exhibited an ascending trajectory during the initial 15-min rolling, followed by a downward trend. These findings provide invaluable insights into the aroma evolution during the rolling stage, offering strategies for enhancing the aroma quality of Congou black tea.","PeriodicalId":36666,"journal":{"name":"Frontiers in Sustainable Food Systems","volume":"8 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2024-09-11","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://public-pages-files-2025.frontiersin.org/journals/sustainable-food-systems/articles/10.3389/fsufs.2024.1436542/pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"147914980","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"农林科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Fluorescent enhanced endogenous carbon dots derived from green tea residue for multiplex detection of heavy metal ions in food","authors":"Lei Zhang, Zhenli Cai, Yaqi Liu, Yao Fan, Yuanbin She","doi":"10.3389/fsufs.2024.1431792","DOIUrl":"https://doi.org/10.3389/fsufs.2024.1431792","url":null,"abstract":"Introduction The presence of excessive heavy metal content in food poses potential risks to human health. Methods This paper presents the fabrication of a novel type of Carbon Dots (CDs) using green tea residue as a carbon source, which can be applied for simultaneous detection of Hg 2+ , Pb 2+ , Fe 3+ , and Cu2 2+ through particle swarm optimization (PSO) based optimized variable-weighted least-squares support vector machine (VWLS-SVM) model and the partial least squares discriminant analysis (PLSDA) method. Results and Discussion The utilization of PSO-VWLS-SVM model discovered and verified two fluorescence enhancement markers of CDs, namely isoquercitrin and 5-methyl furfural in green tea residues. By employing PLSDA, simultaneous qualitative and quantitative determination of these four metal ions was achieved. These CDs are capable of detecting four types of metal ions at low concentrations even when there are high concentrations of other metal ions and amino acids. More importantly, the CDs were successfully applied for the detection of Hg 2+ , Pb 2+ , Fe 3+ , and Cu 2+ in real food samples. The recovery rates of four metal ions spiked into five different matrices were found to be the range of 99.1–101.3%, while both intra-day and inter-day relative standard deviations remained below 0.5% for all samples. This study on chemometrics-assisted exploration into formation mechanisms of endogenous CDs provides theoretical guidance for enhancing their fluorescence properties and expanding their application in heavy metal detection in food.","PeriodicalId":36666,"journal":{"name":"Frontiers in Sustainable Food Systems","volume":"8 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2024-08-21","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.frontiersin.org/journals/sustainable-food-systems/articles/10.3389/fsufs.2024.1431792/pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"147880135","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"农林科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}