Article
Chemistry, Applied
Qingqing Zhang, Xuejin Mao, Changrong Yuan, Jiexue Zhao, Hui Hu, Aiping Yan, Yuanxing Wang, Weiming Xiao
Summary: A simplified dispersive solid-phase extraction (d-SPE) method using UiO-66-PDMS bead as the sorbent was designed to analyze plant growth regulators (PGRs) in citrus fruit. This method allowed for direct extraction of the targets from homogenized samples using UiO-66-PDMS bead, which could be easily separated with a tweezer, avoiding the need for centrifugation or filtration. The method demonstrated good linearity (R2 >= 0.9995) and low detection limits (0.09-0.17 ng/g), with recoveries ranging from 80.7 to 97.5%. The method was also employed to screen PGRs in ten different citrus fruits.
Article
Biochemistry & Molecular Biology
Bahar Nakhjavan, Jason Bland, Maryam Khosravifard
Summary: An analytical method for simultaneous quantification of 65 pesticides in surface water by liquid chromatography coupled to tandem mass spectroscopy was developed and validated. Different factors influencing extraction efficiency were evaluated, various parameters were investigated, and appropriate techniques were selected. The recoveries of pesticides were satisfactory and the method was evaluated on a variety of surface water samples.
Article
Biochemical Research Methods
Xin Wei, Liang Cao, Mingrui Zhou, Jiana Huang, Xiaoyan Liang, Nijie Li, Yanan Pan, Renli Yin, Huashou Li, Adela Jing Li
Summary: This study developed an efficient and sensitive method to simultaneously analyze 16 NEOs and nine UPs in human follicular fluid. The method showed good performance and detected the presence of some pesticides, highlighting the importance of understanding the potential risks of these pesticides to human health.
JOURNAL OF CHROMATOGRAPHY B-ANALYTICAL TECHNOLOGIES IN THE BIOMEDICAL AND LIFE SCIENCES
(2023)
Article
Chemistry, Analytical
Xin Tan, Wancui Xie, Qi Jia, Fangyuan Zhao, Wei Wu, Qingli Yang, Xiudan Hou
Summary: In this study, a simple, sensitive, and selective colorimetric method was developed for the detection of profenofos. Flower-shaped AuPtRh trimetallic nanospheres with exceptional peroxidase catalytic activity were synthesized and linked with an aptamer to specifically recognize profenofos. A graphene oxide grafted stainless-steel mesh (SSM-GO) was used as a carrier for the aptamer-AuPtRh capture probe. The colorimetric biosensor exhibited a linear detection range of 1-300 ng L-1 with a limit of detection of 0.725 ng L-1. It also showed good recovery and anti-interference ability in real samples, providing a new strategy for rapid pesticide detection.
Article
Chemistry, Applied
Jing-Wen Hao, Xiao-Quan Liu, Nai-Dong Chen, An-ling Zhu
Summary: The study established a method for the qualitative and quantitative analysis of Ptaquiloside in Pteridium aquilinum using solid-phase extraction (SPE) preconcentration technique combined with TOF-MS/MS and HPLC-DAD analysis. The method showed good repeatability and accuracy for the detection of PTA in P. aquilinum, which can be used for food safety evaluation.
JOURNAL OF FOOD COMPOSITION AND ANALYSIS
(2021)
Article
Chemistry, Multidisciplinary
Xinyuan Bi, Haijuan Jiang, Xingle Guo, Min Wang, Yu Niu, Liyan Jia, Xu Jing
Summary: A density-adjusted liquid-phase microextraction combined with smartphone digital image colorimetry was established for rapid, convenient, and environmentally friendly determination of parathion-methyl in food samples. The environmentally friendly solvent guaiacol was used as the extractant, and salt and water were used to adjust the density to ensure full contact between the extractant and the sample solution. Parathion-methyl generated a yellow product under strong alkaline conditions, and a smartphone was used for intensity analysis. The method showed a good linear relationship in the range of 0.01-1 mg L-1, with low limits of detection and quantification. The method was successfully applied to various food samples with high recovery and low relative standard deviation.
Article
Chemistry, Analytical
Ting Zhou, Guangzhao He, Changjia Hu, Kang Wu, Ying Liu, Jianguo Li, Anping Deng
Summary: In this study, a highly sensitive and specific enzyme-linked immunosorbent assay (ELISA) for the detection of the anticancer drug 5-Fluorouracil (5-FU) in blood samples was developed. The assay showed no cross-reactivity with other pyrimidines and had a good correlation with HPLC-MS/MS. Immuno-affinity extraction using an immobilized monoclonal antibody (mAb) was also employed, further enhancing the accuracy and feasibility of the detection method.
Article
Chemistry, Applied
Yuhang Gao, Mingkun Gao, Ge Chen, Mingshuo Tian, Rongqi Zhai, Xiaodong Huang, Xiaomin Xu, Guangyang Liu, Donghui Xu
Summary: A novel covalent organic framework material (3DGA@COFs) was synthesized as a solid-phase dispersion sorbent for extracting organophosphorus pesticides (OPs) from vegetables. The material exhibited a large specific surface area and high pore volume, making it an ideal sorbent for sample pretreatment. The proposed method, optimized for various experimental conditions, showed wide linear range, low limits of detection, and satisfactory recoveries for precise detection of OPs in vegetable samples.
Article
Chemistry, Analytical
Ali Khodayari, Shabnam Sohrabnezhad, Soleyman Moinfar, Afshin Pourahmad
Summary: This study reports the synthesis and utilization of a high porous nanocomposite consisting of MIL-53(Al) metal-organic framework and graphene nanopowder as a fiber coating for headspace solid-phase micro-extraction of organophosphorus pesticides. The fabricated fiber showed good repeatability and enrichment factor under optimal conditions, making it suitable for micro-extraction of other pesticides.
Article
Chemistry, Analytical
Fariba Beigmoradi, Masoud Rohani Moghadam, Zahra Garkani-Nejad, Alireza Bazmandegan-Shamili, Hamid Reza Masoodi
Summary: This study developed a dual template electrochemical sensor for simultaneous detection of the commonly used pesticides malathion and carbendazim. The sensor utilized a graphite-epoxy composite electrode modified with molecularly imprinted polymers coated on graphene quantum dots. Several parameters affecting the sensor response were optimized, and the optimum pH values were verified using density functional theory calculations. The results showed that the sensor had a linear response and low detection limits for both malathion and carbendazim.
ANALYTICAL METHODS
(2023)
Article
Chemistry, Analytical
Fukai Li, Min Wang, Jian Zhou, MengRui Yang, TongTong Wang
Summary: Fe3O4@SiO2@CD nanoparticles show excellent magnetic responsiveness, uniform size distribution, and superior chemical affinities to FQs. The MSPEHPLC-MS/MS approach developed is suitable for sensitive quantification of trace levels of FQs in environmental water samples, demonstrating the potential of Fe3O4@SiO2@CD nanoparticles as a promising magnetic adsorbent.
MICROCHEMICAL JOURNAL
(2021)
Article
Environmental Sciences
Nikita Bakanov, Carolina Honert, Lisa Eichler, Gerlind U. C. Lehmann, Ralf Schulz, Carsten A. Bruehl
Summary: A simple acetonitrile-based extraction method using HPLC-ESI-MS/MS was developed for the determination of 98 current-use pesticides in soil and herbaceous vegetation. The method exhibited good accuracy and precision, with percentage recoveries ranging from 71-125% (soil) and 70-117% (vegetation), and relative standard deviations of 1-14% (soil) and 1-13% (vegetation). Matrix-matched calibration curves showed excellent linearity (R-2 > 0.99). The method was successfully applied to agricultural sites in Germany, where 44 of the 98 pesticides were detected, indicating a high qualitative load compared to EU arable soils.
Article
Chemistry, Applied
Shima Amini, Maryam Amiri, Homeira Ebrahimzadeh, Shahram Seidi, Saeed Hejabri Kandeh
Summary: A novel Cu/CuFe2O4@iron-based metal-organic framework was developed for magnetic dispersive solid-phase extraction of chlorpyrifos and phosalone from various samples. The method showed good adsorption capacity and high surface area, resulting in improved extraction efficiency through different interactions with the target analytes. Additionally, the method was validated and successfully applied for the extraction of desired analytes with acceptable recoveries.
JOURNAL OF FOOD COMPOSITION AND ANALYSIS
(2021)
Article
Food Science & Technology
Jessica Schmidt, Benedikt Cramer, Paul C. Turner, Rebecca J. Stoltzfus, Jean H. Humphrey, Laura E. Smith, Hans-Ulrich Humpf
Summary: Biomarker-based approaches are important tools in assessing human exposure to mycotoxins, and the online solid phase extraction-ultra high-performance liquid chromatography-tandem mass spectrometry method provides sensitive, robust, and rapid analysis of relevant mycotoxins and metabolites in human urine.
Article
Biochemical Research Methods
Ying Liu, Xinmeng Tian, Hui Xu, Ganbing Zhang
Summary: In this study, a new soil extraction method was developed for the simultaneous extraction and determination of residual fipronil in soil using online micro-matrix cartridge extraction combined with high performance liquid chromatography-mass spectrometry (HPLC-MS). The method showed better performance in terms of desorption efficiency, analysis time, solvent consumption, sensitivity, and automation compared to conventional extraction methods. It also demonstrated wide universality in various pesticide-soil interactions, different types of compounds, and soil types. The findings provide insights into the development of a mild, highly efficient, reliable, and universal extraction method for pesticide contaminated soil.
JOURNAL OF CHROMATOGRAPHY A
(2022)
Review
Food Science & Technology
Shengtao Bo, Sui Kiat Chang, Hong Zhu, Yueming Jiang, Bao Yang
Summary: Prenylated stilbenoids are a unique class of natural phenolic compounds with potential health benefits, including antioxidant, anti-cancer, anti-inflammatory, and anti-microbial activities. This review provides a comprehensive overview of the structure, bioactivity, potential applications, edible sources, and biosynthesis strategies of prenylated stilbenoids in the food industry. The findings regarding their use as food preservatives, nutraceuticals, and food additives are discussed, providing a full image of these compounds.
CRITICAL REVIEWS IN FOOD SCIENCE AND NUTRITION
(2023)
Review
Biotechnology & Applied Microbiology
Liang Gong, Ajit Kumar Passari, Chunxiao Yin, Vijay Kumar Thakur, John Newbold, William Clark, Yueming Jiang, Shanmugam Kumar, Vijai Kumar Gupta
Summary: Nowadays, the increasing production, use, and disposal of plastic products is a major environmental issue. The presence of plastic particles and other impurities in the food supply chain poses significant health risks to humans, animals, and the environment. Biodegradable plastics aim to create a more sustainable and eco-friendly world. This article discusses the critical issues that need to be addressed for the commercial viability of bioplastic production.
CRITICAL REVIEWS IN BIOTECHNOLOGY
(2023)
Article
Chemistry, Applied
Zhongsuzhi Chen, Meiying He, Yijie Zhou, Xi Chen, Hong Zhu, Bao Yang, Yueming Jiang, Hongxia Qu
Summary: Water-soluble polysaccharides were extracted from litchi pulp, with arabinogalactan identified as its main component. The dominant monosaccharide constituents were arabinose and galactose. During storage, galactose and mannose levels increased while ATP, ADP, and AMP levels decreased with pulp breakdown. The WSP depolymerized, resulting in decreased content and molecular weight but stable structure. Enzymes such as polygalacturonase, pectate lyase, 8-galactosidase, and alpha-L-arabinofuranosidase were active during different stages of storage. Except for LcPME, gene expression for LcPL, LcGAL, and LcPME was downregulated. Depolymerization was mainly caused by the rupture of branched side chains and glucuronic acid backbones, with both enzymatic and nonenzymatic factors involved.
Article
Chemistry, Applied
Qiuxia Yang, Yushan Guo, Yueming Jiang, Bao Yang
Summary: Oligosaccharides are recognized as prebiotics and their structure is closely related to bioactivity. In this study, UPLC-MS/MS was developed to identify the structure of oligosaccharides, which mainly appeared as sodium adduct in the chromatogram. The fragmentation patterns of oligosaccharides were summarized for different glycosidic linkages. The results showed that UPLC-MS/MS was effective in identifying the structure of oligosaccharides and could be applied in polysaccharide structure identification.
FOOD HYDROCOLLOIDS
(2023)
Review
Food Science & Technology
Guoxing Jing, Yuanyuan Wang, Mengping Wu, Wenjie Liu, Shaofeng Xiong, Jianna Yu, Wenshan Li, Wen Liu, Yueming Jiang
Summary: Mycotoxins, highly toxic secondary metabolites produced by fungi, pose a serious threat to food safety and human health. Photocatalytic technology has shown great promise for the degradation of mycotoxins in food due to its high efficiency and low cost, particularly for aflatoxin and deoxynivalenol. This review provides an updated overview of the progress in photocatalytic degradation of mycotoxins in food, including the characteristics of new photocatalytic materials, degradation products, and potential mechanisms and pathways. It also offers a prospect for the future application of photocatalytic technology in mycotoxin degradation.
FOOD REVIEWS INTERNATIONAL
(2023)
Review
Food Science & Technology
Wanli Zhang, Yonggui Pan, Yueming Jiang, Zhengke Zhang
Summary: This study summarizes the application of gas fumigation technology in postharvest fruit quality management and the related biochemical mechanisms. Gas fumigants, such as SO2, ClO2, ozone, NO, CO, 1-MCP, essential oils, H2S, and ethanol, have been found to effectively improve postharvest fruit quality by delaying senescence, inhibiting browning, controlling disease, and alleviating chilling injury. Gas preservatives play multiple roles in postharvest fruit quality control, including antifungal agent, anti-browning agent, redox agent, ethylene inhibitors, elicitor, and pesticide remover. Recent developments in slow-release gas fumigation treatments suggest potential for improved performance. However, some gas fumigants may have side effects on the fruit, which needs to be addressed with combined treatments.
CRITICAL REVIEWS IN FOOD SCIENCE AND NUTRITION
(2023)
Article
Chemistry, Applied
Fengjun Li, Youxia Shan, Haobin Wang, Guoxiang Jiang, Xiaochun Ding, Hanzhi Liang, Chunlan Wang, Xiangjin Kong, Lihong Xie, Yueming Jiang
Summary: The NAC transcription factor BrNAC029 was found to accelerate leaf senescence of Chinese flowering cabbage by activating the transcription of related genes, promoting chlorophyll degradation, and reducing endogenous cytokinin levels.
Article
Agriculture, Multidisciplinary
Lihong Xie, Qiuxiao Yang, Yanfei Wu, Jianbo Xiao, Hongxia Qu, Yueming Jiang, Taotao Li
Summary: The response of fungi to oxidative stress during infection on postharvest fruit is not well understood. In this study, hydrogen peroxide (H2O2) treatment was found to inhibit the growth of Fusarium proliferatum, a fungus causing crown rot of banana fruit. H2O2 exposure increased reactive oxygen species (ROS) and fumonisin B1 (FB1) production in F. proliferatum. Additionally, FB1 biosynthesis was shown to be associated with oxidative stress and contributed to fungal infection on banana fruit.
JOURNAL OF AGRICULTURAL AND FOOD CHEMISTRY
(2023)
Article
Plant Sciences
Guiping Cheng, Changchun Ye, Jiajun Zhang, Hongmei Li, Yueming Jiang, Xuewu Duan
Summary: Cuticular wax protects plant tissues from water loss. The differences in surface morphology, water permeability, and chemical composition of cuticular wax were compared among leaves, calyx, and petals of two carnation cultivars at different postharvest stages. The results showed significant differences among tissues but not among cultivars or postharvest stages, suggesting a strong association between cuticular chemical composition and water barrier function.
PHYSIOLOGIA PLANTARUM
(2023)
Review
Food Science & Technology
Wanli Zhang, Yueming Jiang, Zhengke Zhang
Summary: Fresh fruits have good flavor and high nutritional value, but they age and decay rapidly after harvest, requiring the use of green postharvest fruit preservatives. Natural organic acids are considered as promising options due to their safety and effectiveness. This review discusses the recent applications of various natural organic acids in postharvest fruit quality management, highlighting their potential biochemical mechanisms and benefits in delaying senescence, preventing chilling injury, controlling diseases, inhibiting browning, and improving overall fruit quality. Chemical modification and cotreatment strategies are also considered to enhance the efficiency of natural organic acid preservation methods.
Review
Food Science & Technology
Jiali Yang, Zhengjiao Gao, Zhiqian Yu, Yu Hou, Dingtao Tang, Huiling Yan, Fuwang Wu, Sui Kiat Chang, Yonggui Pan, Yueming Jiang, Zhengke Zhang, Bao Yang
Summary: This review summarizes the natural aurones isolated from dietary plants, a subclass of active flavonoids characterized by a scaffold of 2-benzylidene-3(2H)-benzofuranone. Their positive effects on immunomodulation, antioxidation, cancer prevention, and maintaining the health status of cardiovascular, nervous system, and liver organs are highlighted. The biosynthesis strategies of plant-derived aurones are elaborated to tackle their limited natural abundance, and the potential application of natural aurones in food coloration is discussed. This paper provides a comprehensive overview of dietary aurones, combining up-to-date information.
CRITICAL REVIEWS IN FOOD SCIENCE AND NUTRITION
(2023)
Article
Chemistry, Applied
Yipeng Chen, Yueming Jiang, Lingrong Wen, Bao Yang
Summary: Pectin can improve the bioaccessibility of icaritin as a nanocarrier, while ultrasound can modify the pectin structure. This study investigated the effects of ultrasound-modified pectin (UMP) on the physiochemical properties of icaritin/pectin micelles (IPMs). The UMP-IPMs showed lower encapsulation efficiencies and loading capacities compared to native IPMs, but exhibited stronger anti-proliferation activities against HepG2 cells.
Article
Food Science & Technology
Qiuxia Yang, Yingjun Liu, Yushan Guo, Yueming Jiang, Lingrong Wen, Bao Yang
Summary: This paper reviews the latest reports on nutrients and phytochemicals in fig, summarizes the health benefits and side effects reported in the last decade, and discusses the impacts of postharvest processing and variety selection on fig quality. Figs are rich in bioactive phytochemicals, with prenylated phenolics being rare and having good antioxidant, anticancer, and other activities. Sugars, organic acids, coumarins, and prenylated phenolics can be used as marker chemicals for variety selection.
TRENDS IN FOOD SCIENCE & TECHNOLOGY
(2023)
Article
Food Science & Technology
Yanfei Wu, Qiuxiao Yang, Lihong Xie, Chunxiao Yin, Hongxia Qu, Junxian He, Yueming Jiang, Taotao Li
Summary: Fusarium proliferatum is a pathogenic fungus that causes crown rot in banana fruit during postharvest storage. The secreted aspartic proteinase FpOPSB plays a critical role in the infection process. FpOPSB enhances the virulence of F. proliferatum by suppressing plant immunity and promoting fungal growth.
Article
Plant Sciences
Guoxiang Jiang, Zhiwei Li, Xiaochun Ding, Yijie Zhou, Hongmei Lai, Yueming Jiang, Xuewu Duan
Summary: A WUSCHEL-related homeobox transcription factor (TF), SlWOX13, regulates tomato fruit ripening via ethylene synthesis and signaling, as well as transcriptional regulation of key ripening-related TFs.
Article
Chemistry, Applied
M. Graca Dias, Elsa Vasco, Francisco Ravasco, Lufsa Oliveira
Summary: This study estimated the vitamin D intake of "adults" and "elderly" populations in Portugal using the TDS methodology. The results showed that the majority of people had inadequate vitamin D intake, well below the Dietary Reference Values.
Article
Chemistry, Applied
Yanan Wang, Jiachen Shi, Yong-Jiang Xu, Chin-Ping Tan, Yuanfa Liu
Summary: This study investigates the variations in lipid digestion profiles among individuals of different ages using in vitro digestion models. The findings suggest that adults have a more comprehensive lipid digestion compared to infants, and infants tend to release shorter chain length and more saturated free fatty acids during digestion. Additionally, the particle sizes in the stomach of the elderly were consistently larger. This study enhances our understanding of how lipids with different degrees of unsaturation undergo digestion in diverse age groups.
Article
Chemistry, Applied
Hyunjong Yu, Huisu Kim, Pahn-Shick Chang
Summary: Chitosan-pectin emulsion-filled hydrogel (EFH) was developed to enhance the bioaccessibility of lipophilic bioactive compounds through intestinal delivery. The EFH, prepared without crosslinking agents, demonstrated improved mechanical strength and compactness with higher pectin concentration. It retained the emulsion at pH 2.0 and released it at pH 7.4, resulting in enhanced release of free fatty acids and improved bioaccessibility of curcumin.
Article
Chemistry, Applied
Tongze Zhang, Siqi Hong, Jia-Rong Zhang, Pin-He Liu, Siyi Li, Zixian Wen, Jianwei Xiao, Guirong Zhang, Olivier Habimana, Nagendra P. Shah, Zhongquan Sui, Harold Corke
Summary: Lactic acid fermentation significantly affects the morphology and physicochemical properties of proso millet starch, including the formation of surface indentations and small pores, decrease in gelatinization temperatures, and changes in hardness and adhesiveness.
Article
Chemistry, Applied
Liqin Kong, Feng Hong, Peng Luan, Yiping Chen, Yaoze Feng, Ming Zhu
Summary: This study presents a novel impedance biosensor using composite nanomaterials and T1R1 as a signal probe, which can competitively and ultra-sensitively detect umami intensity. The biosensor exhibits exceptional analytical performance and is suitable for food flavor evaluation.
Article
Chemistry, Applied
Kunying Lv, Yixin Yang, Qilong Li, Ran Chen, Liang Deng, Yiwei Zhang, Ning Jiang
Summary: Horse's milk, with its high nutritional value and low allergenic proteins, could be a substitute for cow's milk in infant consumption. A proteomic method was used to identify and compare milk fat globule membrane (MFGM) and whey proteins from different horse breeds. The study found differences in protein composition and functionality, which could support the development of formulas more suitable for human infants.
Article
Chemistry, Applied
Enrique Jacobo Diaz-Montana, Helene Brignot, Ramon Aparicio-Ruiz, Thierry Thomas- Danguin, Maria Teresa Morales
Summary: Sensory perception of virgin olive oil is influenced by phenols and volatiles, which are affected by the composition of the oil and biological factors. This study investigated the effect of saliva and phenols on the release of volatiles, and found that the presence of phenols decreased the release of saturated volatiles.
Article
Chemistry, Applied
Wei Zhou, Rui Zhang, Zhen Cai, Fangfang Wu, Yong Hu, Chao Huang, Kun Hu, Yun Chen
Summary: Environmentally friendly and outstanding pH-responsive cationic starch nanoparticles (CSNP) were prepared from pH-sensitive starch. CSNP exhibited nanosize and regular sphere, highly free-flowing molecular chains, and demonstrated excellent pH responsiveness through multiple emulsion/demulsification transitions.
Article
Chemistry, Applied
Andrea Koo, Vinayak Ghate, Weibiao Zhou
Summary: This study suggests that direct seeding may negatively affect the nutritional quality of crops, causing a decrease in ascorbic acid, vitamin K, and total glucosinolate content.
Article
Chemistry, Applied
Tonghao Du, Yazhou Xu, Xiaoyan Xu, Shijin Xiong, Linli Zhang, Biao Dong, Jinqing Huang, Tao Huang, Muyan Xiao, Tao Xiong, Mingyong Xie
Summary: This study successfully improved the ACE inhibitory activity of black sesame seeds by fermenting them with Lactobacillus Plantarum NCU116 and hydrolyzing them using acid protease. The RF-PSO model was used to predict the ACE inhibitory activity during the hydrolysis process. Eight peptides with ACE inhibitory activity were identified from fermented black sesame seed hydrolysates after separation and screening.
Article
Chemistry, Applied
Yao Liu, Songyi Lin, Kexin Liu, Shan Wang, Qiaozhen Liu, Na Sun
Summary: This study analyzed the structural changes of shrimp proteins during digestion, predicted the immunodominant epitopes, and validated their allergenicity. The results showed that shrimp proteins were degraded into peptides during digestion, but still carried IgE epitopes that trigger allergic reactions.
Article
Chemistry, Applied
Tiantian Fu, Hongwei Cao, Yu Zhang, Xiao Guan
Summary: This study investigates the impact of milling on the active components in rice, with a focus on the stability and bioaccessibility of phenols, VB1, and alpha-GABA during cooking and digestion. The findings show that milling exacerbates the instability of gamma-GABA during cooking and VB1 during digestion, and it affects the bioaccessibility of these active compounds.
Article
Chemistry, Applied
Zhihao Yang, Yanru Hou, Min Zhang, Puxin Hou, Chang Liu, Lu Dou, Xiaoyu Chen, Lihua Zhao, Lin Su, Ye Jin
Summary: This study investigated the molecular mechanism of feeding regimes on lamb flavor by using TMT labeling combined with MS. The results showed that pasture-fed groups had higher levels of amino acids and volatile flavor substances compared to concentrate-fed groups. Additionally, several differentially abundant proteins associated with lamb flavor were identified.
Article
Chemistry, Applied
Zixuan Xie, De Zhang, Junyu Zhu, Qianqian Luo, Jun Liu, Jingtao Zhou, Xiaoyong Wang, Yuqiong Chen, Zhi Yu, Dejiang Ni
Summary: This study investigated the acidification of aroma-enhanced black tea during storage. Analysis of non-volatile substances and organic acids using UPLC-Q-TOF/MS and HPLC revealed a decrease in soluble sugars and amino acids, while an increase in organic acids such as oxalic acid, malic acid, and quinic acid. In vitro experiments further demonstrated that the acidification is a result of the decomposition of sugars and amino acids by heating, as well as the oxidation of aromatic aldehydes. Additionally, the study showed that the taste composition of tea infusion is altered, with reduced amino acids, catechins, soluble sugars, and flavonoids. This research provides a theoretical basis for improving the quality of black tea.
Article
Chemistry, Applied
Lin Wang, Falai Ma, Zihan Li, Yan Zhang
Summary: This study developed time-temperature integrators based on amyloglucosidase@Cu3(PO4)2 nanoflowers for monitoring the freshness of chilled pork. The results showed that the integrators were highly reliable and accurate in predicting the quality of chilled pork.