Article
Biochemistry & Molecular Biology
Rushali Dudure, Ritika Joshi, Pulak Pritam, Alok Kumar Panda, Manojkumar Jadhao
Summary: This study characterizes the impact of two organophosphorus pesticides (OPs) on protein conformation and aggregation. The results show that the OPs strongly bind to the protein and disrupt its structure, altering both the secondary and tertiary structures. The study also reveals that the OPs enhance the protein aggregation process.
JOURNAL OF BIOMOLECULAR STRUCTURE & DYNAMICS
(2023)
Article
Pharmacology & Pharmacy
Stefania-Claudia Jitaru, Andrei Neamtu, Gabi Drochioiu, Laura Darie-Ion, Iuliana Stoica, Brindusa-Alina Petre, Vasile-Robert Gradinaru
Summary: Peptides and their related compounds have the ability to form various nanostructures in response to stimuli, such as pH, temperature, and ionic strength. In this study, a pentapeptide derived from lysozyme was synthesized and characterized for its fibrillar structures. The peptide was synthesized using solid phase peptide synthesis and its properties were confirmed using spectroscopy and microscopy. The obtained fibrils show potential for medical and cosmetic applications.
Article
Biophysics
Neelakant Varma, Abhishek Singh, Vijay K. Ravi, Mukesh Thakur, Satish Kumar
Summary: Deltamethrin interacts with Hen Egg White Lysozyme in vitro, inducing protein aggregation and altering its conformation, subsequently affecting the catalytic activity of the protein.
COLLOIDS AND SURFACES B-BIOINTERFACES
(2021)
Article
Chemistry, Applied
Yinyin Chen, Xiujuan Yang, Chenxi Zhao, Changfang Lu, Wei Wu, Xianxiang Wang
Summary: A novel nanocomposite material has been developed as an upconversion fluorescence probe for detecting procyanidins, showing potential applications in detecting procyanidins in biological samples and in vivo imaging analysis.
JOURNAL OF FOOD COMPOSITION AND ANALYSIS
(2022)
Article
Biochemistry & Molecular Biology
Kamile Mikalauskaite, Mantas Ziaunys, Vytautas Smirnovas
Summary: This study examines the impact of the initial folding state of a protein on amyloid fibril formation, revealing a correlation between protein state and the kinetics and structural properties of the resulting fibrils.
INTERNATIONAL JOURNAL OF MOLECULAR SCIENCES
(2022)
Article
Chemistry, Analytical
Kevin A. Kirk, Alina Vasilescu, Daniel Andreescu, Dinushani Senarathna, Sumona Mondal, Silvana Andreescu
Summary: Proteins are widely used in biomedical and pharmaceutical industries, necessitating the development of rapid and accurate methods for monitoring protein aggregation. This study introduces a novel approach using single-particle collision electrochemistry to track early-stage lysozyme aggregation, providing insights into protein stability and aggregation dynamics. The results demonstrate significant differences in charge transfer between AgNP samples alone and in the presence of non-aggregated and aggregated lysozyme, highlighting the potential of SPCE as an alternative method for studying protein aggregation.
ANALYTICAL CHEMISTRY
(2021)
Article
Biochemistry & Molecular Biology
Mantas Ziaunys, Andrius Sakalauskas, Tomas Sneideris, Vytautas Smirnovas
Summary: Protein aggregation into amyloid fibrils is associated with various disorders, but the mechanisms behind the conversion of non-harmful proteins into such aggregates are not fully understood. Recent studies suggest that multiple types of protein aggregates may co-exist in tissues of patients with amyloid-related disorders, potentially influencing each other.
INTERNATIONAL JOURNAL OF MOLECULAR SCIENCES
(2021)
Article
Chemistry, Physical
Mohd Sajid Ali, Hamad A. Al-Lohedan
Summary: The non-covalent molecular interaction between lysozyme and two important non-steroidal anti-inflammatory drugs (paracetamol and ibuprofen) was studied using fluorescence, UV-visible, circular dichroism spectroscopies, and molecular docking simulations. The results showed that both drugs had a good interaction with lysozyme, with ibuprofen having a slightly stronger interaction than paracetamol. The binding of the drugs with lysozyme involved hydrophobic forces and hydrogen bonding in the case of paracetamol, while hydrophobic interactions dominated in the lysozyme-ibuprofen interaction. Both drugs induced changes in the secondary structure of lysozyme, increasing its alpha-helicity. The results obtained from molecular docking simulations were in excellent agreement with the experimental studies.
JOURNAL OF MOLECULAR LIQUIDS
(2023)
Article
Spectroscopy
Narges Ashrafi, Behzad Shareghi, Sadegh Farhadian, Mansoore Hosseini-Koupaei
Summary: The present study investigates the interaction of naringenin with lysozyme in an aqueous medium using steady-state fluorescence, UV-Vis spectrophotometry, molecular docking studies, and circular dichroism (CD). The results show that naringenin can induce changes in the secondary and tertiary structure of lysozyme, switch from static quenching mechanism to intrinsic fluorescence, and the complex stability is determined by hydrophobic forces.
SPECTROCHIMICA ACTA PART A-MOLECULAR AND BIOMOLECULAR SPECTROSCOPY
(2022)
Article
Chemistry, Analytical
Jinhong Hou, Hongqian Liu, Qian Ma, Suying Xu, Leyu Wang
Summary: In this study, pH-triggered switchable magnetic resonance imaging (MRI) nanoprobes were constructed by coordination-driven self-assembly of monodispersed iron oxide nanoparticles (MIONPs) with simple amino acid derivatives. These nanoprobes exhibited T2-weighted MRI features but could be turned into T1-weighted MRI under slightly acidic conditions at the tumor site. The dynamic assembly and disassembly properties of MIONPs enabled T2/T1 switchable contrast imaging, providing selective turn-on signals at the tumor site with high specificity.
ANALYTICAL CHEMISTRY
(2022)
Article
Food Science & Technology
Gui-Li Huang, Tian-Tian Liu, Jia-Jia Ma, Ling-Xiang Sun, Si-Yao Sui, Xin-Yao Quan, Yu-Ning Wang
Summary: In this study, the inhibitory impact of oligomeric procyanidins (OPC) on the activity of polyphenol oxidase (PPO) and its effect on the storage of loquat fruits were evaluated. The results showed that OPC could attenuate the activity of PPO, delay browning, and enhance the quality of harvested loquat fruits.
Article
Biochemistry & Molecular Biology
Romana Parveen, Zeba Tarannum, Sher Ali, Sadaf Fatima
Summary: Protein aggregation is the major cause of several acute amyloid diseases, and in this study, nanoclays were used to inhibit the aggregation of model proteins HSA and HL. The results showed that all nanoclays inhibited the DTF-induced aggregation, with bentonite and MMT K-10 being particularly effective in slowing down the nucleation stage, as observed through various biophysical techniques. This suggests that nanoclays could be used as artificial chaperones for effective treatment against protein aggregation-related disorders.
INTERNATIONAL JOURNAL OF BIOLOGICAL MACROMOLECULES
(2021)
Article
Chemistry, Multidisciplinary
Songtao Ye, Han Zhang, Jinyu Fei, Charles H. Wolstenholme, Xin Zhang
Summary: By chemically installing extended pi-rich alternating carbon-carbon linkages between the rotational electron donors and acceptors of RBFs, the lack of control of their viscosity sensitivity has been resolved. The length of the linkage strongly influences the viscosity sensitivity, providing the possibility to design RBFs with different viscosity sensitivities. RBFs can differentiate misfolded protein oligomers and insoluble aggregates in test tubes and live cells through a dual-color imaging strategy.
ANGEWANDTE CHEMIE-INTERNATIONAL EDITION
(2021)
Article
Food Science & Technology
Ugo Bussy, Hong You, James Curtis, Catherine Kwik-Uribe
Summary: Flavanols and procyanidins in cocoa have historically been difficult to characterize due to the lack of standards and weak chromatographic separation. However, recent developments have enabled standardization in testing, although implementation remains challenging for new laboratories. This study provides guidelines for routine analysis and establishes acceptance criteria, contributing to the establishment of international testing standards for botanical bioactives.
FOOD RESEARCH INTERNATIONAL
(2023)
Article
Chemistry, Multidisciplinary
Jianyu Zhang, Lianrui Hu, Kaihua Zhang, Junkai Liu, Xingguang Li, Haoran Wang, Zhaoyu Wang, Herman H. Y. Sung, Ian D. Williams, Zebing Zeng, Jacky W. Y. Lam, Haoke Zhang, Ben Zhong Tang
Summary: Experimental and theoretical studies show that introducing electron-donating groups into triphenylmethane (TPM) can enhance the efficiency of clusteroluminescence, while introducing electron-withdrawing groups may result in quenched clusteroluminescence.
JOURNAL OF THE AMERICAN CHEMICAL SOCIETY
(2021)
Review
Food Science & Technology
Zijian Zhi, Rui Liu, Wenjun Wang, Koen Dewettinck, Filip Van Bockstaele
Summary: This review summarizes the research advances of O/W/O double emulsions over the past two decades, focusing on preparation strategies, stabilization mechanism, and potential applications. Various emulsification strategies, interfacial stabilizers, and viscosity effects on stability are discussed. Analytical methods for evaluating stability and possible innovative food applications are also highlighted.
CRITICAL REVIEWS IN FOOD SCIENCE AND NUTRITION
(2023)
Article
Chemistry, Physical
Hui Yuan, Laura L. E. Mears, Yuefei Wang, Rongxin Su, Wei Qi, Zhimin He, Markus Valtiner
Summary: Osteoarthritis, a common degenerative joint disease, causes serious pain due to the progressive loss and destruction of articular cartilage. Restoring joint lubrication is crucial for its treatment, and various lubricants have been developed to reduce friction and promote cartilage repair. This review discusses the recent progress in natural, bioinspired, and alternative lubricants for osteoarthritis treatment, as well as their structural characterization and lubrication properties.
ADVANCES IN COLLOID AND INTERFACE SCIENCE
(2023)
Review
Chemistry, Multidisciplinary
Qing Li, Yuefei Wang, Gong Zhang, Rongxin Su, Wei Qi
Summary: Biomimetic science has attracted significant interest in various fields, including chemistry, biology, materials science, and energy. Biomimetic mineralization involves the synthesis of inorganic minerals under the control of organic molecules or biomolecules, with peptides playing a crucial role as building blocks. Peptides can precisely control the morphology, size, and composition of mineralized materials, and also provide templates for the nucleation and growth of inorganic nanomaterials, offering potential for high catalytic efficiency, selectivity, and biotherapeutic functions.
CHEMICAL SOCIETY REVIEWS
(2023)
Article
Environmental Sciences
Mingda Che, Cancan Shan, Wenjie Zhang, Yanyi Duan, Renliang Huang, Mei Cui, Wei Qi, Rongxin Su
Summary: A novel heterogenous Fenton-like process utilizing arbutin-modified cellulose nanocrystals (AT-CNC) activated persulfate was proposed to remove the harmful algal blooms (HABs) Phaeocystis globosa from seawater. The results showed that the removal efficiency of P. globosa reached high levels under certain additive conditions. Therefore, this method has the potential to be an efficient option for controlling HABs.
Article
Chemistry, Multidisciplinary
Jiayu Liu, Jiaxing Zhang, Liwei Zhang, Yuefei Wang, Hao Wei, Yuhe Shen, Jiwei Min, Xi Rong, Wei Qi, Rongxin Su, Zhimin He
Summary: This study reports the coordination assembly of ferrocene-diphenylalanine (Fc-FF) with divalent copper ions (Cu2+), resulting in the formation of metal-peptide assemblies (MPAs) with hierarchical spiral architectures. The MPAs consist of helically organized nanofibers that resemble logarithmic spirals. These MPAs exhibit hierarchically porous structures with abundant Fc and Cu2+ active sites, displaying significantly higher catalytic activity than natural laccase in decolorization reactions. Furthermore, the temperature and enantiomeric excess (ee) can be controlled to synthesize a series of hierarchical structures for MPAs. Peptide enantiomers with higher ee values self-assemble into highly complex and ordered structures, which exhibit higher surface area and porosity and thus enhanced catalytic activity compared to those assembled by peptides with lower ee values. These findings provide new insights into the crucial role of chirality in directing the self-assembly of biomolecules into highly ordered complex functional structures.
SCIENCE CHINA-CHEMISTRY
(2023)
Article
Food Science & Technology
Chaozhong Fan, Xintong Wang, Xiwang Song, Ronghao Sun, Rui Liu, Wenjie Sui, Yan Jin, Tao Wu, Min Zhang
Summary: A new type of walnut peptide iron (WP-Fe) chelate with high iron-binding capacity and antioxidant activity was prepared. The WP-Fe chelate exhibited a different morphological structure and stronger free radical scavenging ability compared to WP. Peptide iron chelates are expected to become a promising source of iron supplement and antioxidant activities.
Article
Biotechnology & Applied Microbiology
Chang Liu, Xiaoyue Zhang, Yu Zhou, Lin Zhu, Chengyu Zhang, Xiaohui Yan, Shengping You, Wei Qi, Rongxin Su
Summary: A leakage-proof Zr-based metal-organic framework (MOF) carrier, UiO-66NH2(30), was constructed to immobilize laccase (Lac) and enhance antibiotic biodegradation. The Lac was fixed inside the carrier with a high loading amount (275.96 mg/g) and recovery (618%). The immobilized Lac@UiO-66-NH2(30) exhibited excellent reusability and stability, achieving almost complete degradation of rifampicin and lincomycin within 6 minutes and 6 hours, respectively.
BIOCHEMICAL ENGINEERING JOURNAL
(2023)
Article
Chemistry, Applied
Yanyi Duan, Jiangjiexing Wu, Wei Qi, Rongxin Su
Summary: A nanocomposite superhydrophobic coating was fabricated using natural sourced nanomaterials (cellulose nanocrystals, CNCs) as nanofillers via a simple sol-gel synthesis method. The coating with 20 wt% CNCs (CNC20) showed the best antifouling performance, reducing fouling by 82% compared to the control group in a 90-day marine field test. This biomimetic study provides a novel strategy for the development of environmentally friendly coatings with CNCs nanofillers.
CARBOHYDRATE POLYMERS
(2023)
Article
Biotechnology & Applied Microbiology
Feifei Song, Tao Gu, Lin Zhang, Jiaxing Zhang, Shengping You, Wei Qi, Rongxin Su
Summary: This study improved the catalytic activity of L-Trp-TPH1-BH4 by rational design and obtained the S337A/F318Y beneficial mutant, which increased the yield of 5-HTP and produced 0.91 g/L of 5-HTP, offering the prospect of green production of 5-HTP.
ENZYME AND MICROBIAL TECHNOLOGY
(2023)
Article
Chemistry, Physical
Heng Chang, Vahid Adibnia, Rongxin Su, Wei Qi, Xavier Banquy
Summary: This study introduces new adhesive materials that use cation-p interactions for specific cohesive interaction in water. These materials are short peptides based on the FKF motif with different side groups. By controlling the composition of the side group, the strength and specificity of the cohesive and adhesive energies of the peptides can be finely tuned. The interfacial properties of the adhesive peptides depend on the deposition solvent, and using DMSO as the solvent results in higher cohesive and adhesive energies. The supramolecular structure of the peptide film, specifically needle-like structures, significantly enhance the adhesion of the material. Overall, cation-p interaction can be effectively utilized to create adhesive materials with features found in underwater adhesives, such as solvent displacement activation, as well as new properties like specificity and supramolecular structure enhanced adhesion.
JOURNAL OF COLLOID AND INTERFACE SCIENCE
(2023)
Article
Chemistry, Multidisciplinary
Xiaoxuan Ji, Qing Li, Rongxin Su, Yuefei Wang, Wei Qi
Summary: In this study, hierarchically organized gold nanoparticles (Au HOPs-X) with peroxidase-like catalytic activity were synthesized by reducing Au-thiolate hierarchically organized particles (Au HOPs) in situ. The Au HOPs-X exhibited enhanced catalytic activity compared to the initial Au HOPs due to the reduction of Au-thiolate complexes into Au nanoparticles and increased specific surface area. The highly catalytic Au HOPs-10 was combined with glucose oxidase to establish a standard curve for rapid detection of glucose through visual determination of solution saturation captured by mobile phone photos.
Article
Green & Sustainable Science & Technology
Jiri Jaromir Klemes, Aoife Foley, Fengqi You, Kathleen Aviso, Rongxin Su, Awais Bokhari
Summary: This article highlights the importance of renewable and sustainable energy and circular economy in achieving sustainable development. It emphasizes the need for a portfolio of technologies and strategies to reduce the carbon emissions intensity of the energy sector and utilize renewable energy sources. The article also addresses the development of more sustainable and renewable energy devices and the establishment of infrastructure to improve energy efficiency. Lastly, it suggests the development of optimization models considering temporal and geographical constraints for the proper deployment of these strategies.
RENEWABLE & SUSTAINABLE ENERGY REVIEWS
(2023)
Article
Biotechnology & Applied Microbiology
Rui Liu, Ruixin Liu, Xuebing Yan, Ningjie Li, Ming Li, Zijian Zhi, Boli Guo, Min Zhang
Summary: The study aimed to improve the efficiency of wheat bran polysaccharide extraction through solid-state fermentation using the bioactive fungus Isaria cicadae Miq. The structural properties of the fermented wheat bran polysaccharide (IC-FWBP) were identified. The IC-FWBP consisted of mannose, glucose, and galactose, with glycosidic linkages and triple-helix conformations.
FERMENTATION-BASEL
(2023)
Article
Chemistry, Applied
Yuhe Shen, Dongshuang Jia, Yuefei Wang, Tao Yu, Xiaojian Xu, Heng Chang, Qing Li, Rongxin Su, Wei Qi
Summary: In this study, we designed an asymmetric reaction system of tyrosine derivatives and demonstrated that the substrate molecular chirality can affect the reaction rate, intermolecular forces, and arrangement during assembly, thereby influencing the morphology, structure, and properties of biomimetic pigment materials. We also discovered that L + D-tyrosine derivatives can be oxidized and deposited on hair surfaces to achieve black and red-brown color effects, providing a green and safe biological hair dyeing method. Compared to previous studies, this approach offers faster coloring speed, higher color saturation, stronger color fixation stability, good mechanical strength, and biocompatibility, suggesting its potential for the manufacture of chiral-inspired advanced materials with bio-nanotechnology applications.
Article
Engineering, Chemical
Haoyu Wang, Jinghui Wang, Mei Cui, Rongxin Su, Renliang Huang
Summary: A novel antifouling and superhydrophobic polyurethane sponge was successfully prepared, which showed excellent antifouling properties and super-hydrophobicity. It exhibited a high absorption capacity for trichloromethane and maintained a high absorption rate even after 50 cycles. It also demonstrated exceptional oil-water separation performance with high separation fluxes and efficiency. Therefore, this sponge is a promising and applicable material for long-term oil/water separation and cleanup of oil spills in marine environments.
SEPARATION AND PURIFICATION TECHNOLOGY
(2023)
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.
