Review
Chemistry, Medicinal
Ramin Negahdari, Sepideh Bohlouli, Simin Sharifi, Solmaz Maleki Dizaj, Yalda Rahbar Saadat, Khadijeh Khezri, Samira Jafari, Elham Ahmadian, Negar G. Jahandizi, Safa Raeesi
Summary: Rutin, a natural flavonoid compound, has shown a wide range of therapeutic potentials in nanoformulations, including antimicrobial, antifungal, and anti-allergic effects. Improving the bioavailability of rutin through novel drug-delivery methods can enhance its efficacy in treating chronic diseases. Further investigations are needed to confirm the enhanced bioavailability of rutin nanoformulations.
PHYTOTHERAPY RESEARCH
(2021)
Review
Chemistry, Medicinal
Shengyu Zhang, Lingli Li, Wenxu Chen, Suowen Xu, Xiaojun Feng, Lei Zhang
Summary: This article reviews the oxidation mechanism of LDL, the role of oxidized LDL in atherosclerosis, and the pharmacological effects of natural products in protecting against LDL oxidation and atherosclerosis. Despite supporting evidence from clinical and basic research, the beneficial effects of natural products in inhibiting LDL oxidation and preventing atherosclerosis are still controversial due to factors such as population differences and varying dosages and treatment durations in studies. Understanding the mechanism of LDL oxidation and the effects of oxidized LDL can help researchers find novel therapies against atherosclerosis.
PHYTOTHERAPY RESEARCH
(2021)
Article
Cardiac & Cardiovascular Systems
Feroz Ahmad, Robert D. Mitchell, Tom Houben, Angela Palo, Tulasi Yadati, Andrew J. Parnell, Ketan Patel, Ronit Shiri-Sverdlov, David S. Leake
Summary: The study shows that cysteamine can induce regression of atherosclerotic lesions in LDL receptor-deficient mice, improve lesion stability, reduce oxidized phospholipids, decrease liver lipid levels and expression of specific proteins and cytokines, as well as enhance skeletal muscle function. No changes were observed in plasma lipid concentrations. This suggests that lysosomal oxidation inhibition with antioxidants targeted at lysosomes may be a promising therapy for atherosclerosis in patients.
JOURNAL OF THE AMERICAN HEART ASSOCIATION
(2021)
Article
Biochemistry & Molecular Biology
Jacek Jasiecki, Monika Targonska, Anna Janaszak-Jasiecka, Magdalena Chmara, Monika Zuk, Leszek Kalinowski, Krzysztof Waleron, Bartosz Wasag
Summary: Familial hypercholesterolemia (FH) is a genetic disorder caused by mutations in the LDL receptor (LDLR) gene, leading to an increased risk of cardiovascular diseases. This study developed a single-cell, kinetic, fluorescent LDL uptake assay to analyze the function of LDLR gene variants. It also established a human cell line with LDLR deficiency and a reporter system for studying LDLR gene transcriptional regulation, which can aid in drug testing for atherosclerosis therapy.
INTERNATIONAL JOURNAL OF MOLECULAR SCIENCES
(2023)
Article
Biochemistry & Molecular Biology
Adam Hartley, Magapu Pradeep, Victor Van den Berg, Ameer Hamid Ahmed Khan, Hasan Ali Shah, Mohammed Allaf, Anna Chow, Mikhail Caga-Anan, Joseph Shalhoub, Wolfgang Koenig, Michael Fisher, Dorian O. Haskard, Ramzi Y. Khamis
Summary: This study aimed to investigate the effects of major vascular surgery on LDL oxidation and the dynamic changes of antibodies against MDA-LDL. The findings suggest that major vascular surgery increases plasma MDA-LDL levels while decreasing antibody and complex levels, possibly due to antibody binding and removal from circulation. The study provides novel insights into the role of the immune system during the oxidative stress of major surgery and highlights the potential clearance role of IgG antibodies, particularly in relation to adverse events.
Review
Medicine, General & Internal
Katariina Oorni, Petri T. Kovanen
Summary: This review discusses the process of circulating LDL particles entering the arterial intima, aggregating, and inducing inflammation. It also explores individual differences in aggregation susceptibility and the potential implications for cardiovascular disease. Efforts to reduce LDL aggregation susceptibility are highlighted as a possible strategy for preventing atherosclerosis and related conditions.
JOURNAL OF CLINICAL MEDICINE
(2021)
Article
Chemistry, Applied
Won Young Oh, Priyatharini Ambigaipalan, Fereidoon Shahidi
Summary: Esterification of quercetin with fatty acids did not compromise its antioxidant activity, and the derivatives showed similar or even better antioxidant properties than quercetin itself. This suggests that quercetin derivatives could be valuable antioxidants in food and biological systems.
Article
Chemistry, Analytical
Daria Rudewicz-Kowalczyk, Iwona Grabowska
Summary: This study compared the characteristics of an immunosensor and an aptasensor for detecting LDL, finding that the aptasensor exhibited better selectivity towards HSA, HDL, and MDA-LDL, with no interference from other components of serum samples.
Article
Biochemistry & Molecular Biology
Samata S. Pandey, Adam Hartley, Mikhail Caga-Anan, Tareq Ammari, Ameer Hamid Ahmed Khan, Bao Anh Vu Nguyen, Chiari Kojima, Jon Anderson, Steven Lynham, Michael Johns, Dorian O. Haskard, Ramzi Y. Khamis
Summary: This study introduces a sensitive novel enzyme-linked immunosorbent assay for the detection of malondialdehyde-modified low-density lipoprotein (MDA-LDL), a key component of oxidized LDL. The assay is capable of accurately measuring MDA-LDL levels in human plasma and serum, with high inter-operator reproducibility.
Article
Nutrition & Dietetics
Rihwa Choi, Sang Gon Lee, Eun Hee Lee
Summary: This study investigated the prevalence of sdLDL predominant phenotype in Korean adult patients and found that a significant proportion of patients had increased risk only due to sdLDL. This suggests that LDL particle size analysis has clinical significance in the Korean population.
Review
Cell Biology
Mohammad Majharul Islam, Iryna Hlushchenko, Simon G. Pfisterer
Summary: This study aims to highlight that all steps from LDL internalization to receptor recycling are likely associated with dynamic membrane contact sites in which endosomes engage with the endoplasmic reticulum and other organelles. This has important implications for understanding diseases such as hypercholesterolemia.
FRONTIERS IN CELL AND DEVELOPMENTAL BIOLOGY
(2022)
Article
Biophysics
Kun Wang, Chaoye Gan, Huaying Wang, Meiying Ao, Youlong Fan, Yong Chen
Summary: Research shows that acidification causes changes in size and biomechanical properties of LDL/oxLDL particles, with significant decreases in hardness, potentially explaining their role in atherosclerosis.
COLLOIDS AND SURFACES B-BIOINTERFACES
(2021)
Article
Biophysics
Jianfang Cao, Peiying Lv, Yang Shu, Jianhua Wang
Summary: A multiplexed sensor platform combined with an encoder system is introduced for accurate analysis of multiple lipoproteins in complex matrix, achieving highly facile and precise identification for lipoprotein subclasses. The system can accurately identify LDL at 0.05-37.5 μg/mL and 11 typical proteins including three lipoprotein subclasses in human serum, as well as different molar ratios of lipoprotein subclasses from real clinical serum samples.
BIOSENSORS & BIOELECTRONICS
(2022)
Article
Agricultural Engineering
Haimei Li, Yongsheng Chen, Qingxia Peng, Xinjia Tan, Guo Chen, Hua Zhou, Rian Yan
Summary: This study investigated the effects of bamboo leaf flavonoids on the oxidative and physical stability of walnut emulsions. The results showed that bamboo leaf flavonoids reduced the peroxide and malondialdehyde levels in the emulsions, while maintaining the droplet size and microstructure. These flavonoids also enhanced the oxidative stability of the emulsions.
INDUSTRIAL CROPS AND PRODUCTS
(2022)
Article
Biochemistry & Molecular Biology
Mohd Junaid Wani, Khushtar Anwar Salman, Md Amiruddin Hashmi, Sana Siddiqui, Shagufta Moin
Summary: This study examined the anti-glycation potential of rutin on glycated LDL using spectroscopic and in silico methods. Rutin was found to inhibit advanced glycation end-product production and reduce oxidative stress in a dose-dependent manner. The structural abnormalities of glycated LDL were also restored by rutin. Overall, rutin possesses strong anti-glycation properties and may be useful in the treatment of atherosclerotic cardiovascular diseases.
INTERNATIONAL JOURNAL OF BIOLOGICAL MACROMOLECULES
(2023)
Article
Chemistry, Physical
Betuel Yesiltas, Alyssa M. Soria Caindec, Pedro J. Garcia -Moreno, Simon Gregersen Echers, Tobias Hegelund Olsen, Nykola C. Jones, Soren V. Hoffmann, Paolo Marcatili, Michael T. Overgaard, Egon B. Hansen, Charlotte Jacobsen
Summary: This study investigated the emulsifying and antioxidant activity of 10 peptides derived from seaweed, meth-anotrophic bacteria, and potatoes. The factors responsible for the dual-functionality of these peptides were characterized and related to their ability to provide physical and oxidative stability in fish oil-in-water emulsions. The study found that certain peptides underwent structural changes when adsorbed at the oil-water interface, leading to improved physical stability. Among the tested peptides, KVKINETVEIKGKFHV was found to be the most effective in retarding lipid oxidation. However, it was noted that various factors, such as length, structure, charge, and interfacial tension, influenced the stability of the emulsions. Overall, KVKINETVEIKGKFHV demonstrated high effectiveness as both an emulsifier and antioxidant.
COLLOIDS AND SURFACES A-PHYSICOCHEMICAL AND ENGINEERING ASPECTS
(2023)
Article
Biochemistry & Molecular Biology
Nor E. Rahmani-Manglano, Emilia M. Guadix, Charlotte Jacobsen, Pedro J. Garcia-Moreno
Summary: The impact of encapsulation technology on the oxidative stability of fish-oil-loaded capsules was investigated. Spray-drying technology resulted in larger capsules with higher encapsulation efficiency, while electrospraying produced smaller capsules with poorer retention properties. Coaxially electrosprayed capsules had the lowest encapsulation efficiency and exhibited the lowest oxidative stability. Emulsion-based encapsulates showed high oxidative stability during storage.
Review
Food Science & Technology
Sakhi Ghelichi, Mona Hajfathalian, Betül Yesiltas, Ann-Dorit Moltke Sorensen, Pedro J. Garcia-Moreno, Charlotte Jacobsen
Summary: Emulsions play a vital role in food science, but their application in food production is hindered by physical and oxidative stability issues. This study aims to review oxidation and oxidative stability in emulsions, covering lipid oxidation reactions, measurement methods, and strategies to enhance stability. Different types of emulsions, including conventional and uncommon ones, as well as multiple emulsions, nanoemulsions, and Pickering emulsions, are considered. The comparative approach is used to explain oxidative processes in various parent and food emulsions.
COMPREHENSIVE REVIEWS IN FOOD SCIENCE AND FOOD SAFETY
(2023)
Article
Chemistry, Applied
Simon Gregersen Echers, Ali Jafarpour, Betul Yesiltas, Pedro J. Garcia-Moreno, Mathias Greve-Poulsen, Dennis K. Hansen, Charlotte Jacobsen, Michael Toft Overgaard, Egon Bech Hansen
Summary: In this study, a novel workflow was presented to produce a potato protein hydrolysate with improved emulsifying and foaming properties. The targeted hydrolysis design was facilitated using quantitative proteomics and bioinformatic prediction. This interdisciplinary approach shows promise for the production of functional hydrolysates from alternative protein sources.
FOOD HYDROCOLLOIDS
(2023)
Article
Food Science & Technology
Pedro J. Garcia-Moreno, Betul Yesiltas, Simon Gregersen Echers, Paolo Marcatili, Michael Overgaard, Egon B. Hansen, Charlotte Jacobsen
Summary: The food industry aims to develop novel protein-based emulsifiers from sustainable sources to meet clean-label demand. Enzymatic hydrolysis produces peptides with enhanced surface properties. This review discusses a bottom-up approach using quantitative proteomics and bioinformatic prediction to produce emulsifying peptides through targeted enzymatic hydrolysis. It also explores the relationship between peptide interfacial properties and emulsifying activity, as well as the impact on stability of wet and dried emulsions.
CURRENT OPINION IN FOOD SCIENCE
(2023)
Article
Chemistry, Applied
Mojtaba Delfanian, Betuel Yesiltas, Ann-Dorit Moltke Sorensen, Mohammad Ali Sahari, Mohsen Barzegar, Hassan Ahmadi Gavlighi, Charlotte Jacobsen
Summary: The effects of sodium caseinate (SC) and its combination with OSA-modified starch (SC-OS; 1:1) on the physical and oxidative stability of high-fat fish oil-in-water emulsion were studied. The SC emulsion had smaller droplets and higher viscosity due to fast adsorption. Both emulsions exhibited non-Newtonian and shear-thinning behavior. SC emulsion showed lower lipid oxidation due to better Fe2+ chelating activity. Short-chain gallates (G1 > G0 similar to G3) in SC emulsion had a synergistic effect against lipid oxidation, while G8, G12, and G16 added emulsions showed higher lipid oxidation due to internalization.
Article
Chemistry, Applied
Elisa Varona, Pedro J. Garcia-Moreno, Simon Gregersen Echers, Tobias H. Olsen, Paolo Marcatili, Francesc Guardiola, Michael T. Overgaard, Egon B. Hansen, Charlotte Jacobsen, Betuel Yesiltas
Summary: Bioinformatics tools were used to predict the antioxidant activity of peptides derived from various proteins. The best-performing peptides showed high protection against oxidation in emulsions, but were less efficient in mayonnaise. The efficacy of the peptides was higher in low-fat emulsions. Peptide negative net charge was found to be important for chelating activity.
Article
Chemistry, Applied
Wilhelm R. Glomm, Peter P. Molesworth, Betul Yesiltas, Charlotte Jacobsen, Heidi Johnsen
Summary: The molecular characteristics of food-grade polysaccharide gum acacia can vary depending on the source, which impacts its behavior as a thickener, emulsifier, and wall material in microencapsulation. In this study, five acacia gums from different sources were compared in terms of molecular weight distribution, interfacial tension, microencapsulation of salmon oil, and oxidative stability of the oil. Three of the tested acacia gums resulted in stable microcapsules with high encapsulation yield and improved oxidative stability compared to the remaining two gums.
FOOD HYDROCOLLOIDS
(2023)
Article
Chemistry, Applied
Junze Han, Dongying Yang, Hong Zhang, Yanlan Bi, Xuebing Xu
Summary: This study assessed the impact of different concentrations of branched-chain fatty acid triacylglycerols (BCFA-TAG) on the crystallization and performance of palm oil-based blend PO-PS. The addition of BCFA-TAG accelerated the onset of crystallization, promoted crystal nucleation, and reduced solid fat content. Furthermore, BCFA-TAG induced a more compact and orderly crystalline network, resulting in increased hardness.
JOURNAL OF THE AMERICAN OIL CHEMISTS SOCIETY
(2023)
Article
Food Science & Technology
Xue Gong, Jiaxin Li, Zhigang Liu, Xuebing Xu, Aixia Wang, Mengzi Nie, Ran Lin, Yu Tian, Xiya Zhang, Lili Wang, Liya Liu, Yang Li, Fengzhong Wang, Li-Tao Tong
Summary: This study investigated the effects of green treatments such as annealing, pullulanase debranching, double enzyme, and their combinations on the structural, digestive, and physicochemical properties of rice flour. The results showed that composite modification could effectively reduce the digestibility of rice flour and improve its thermal stability, water solubility, and swelling power.
LWT-FOOD SCIENCE AND TECHNOLOGY
(2023)
Article
Chemistry, Medicinal
Jorge Coque, Charlotte Jacobsen, Bita Forghani, Anders Meyer, Greta Jakobsen, Jens J. Sloth, Ann-Dorit Moltke Sorensen
Summary: This study evaluated the effectiveness and applicability of protein and phosphorus separation processes in protein-rich process waters with low and high salt content from salted cod processing. The results showed that different flocculation treatments resulted in different recoveries of nutrients in the liquid side-streams, and the ultrafiltration method was more effective for high salt content.
Article
Food Science & Technology
Jiaxi Li, Junze Han, Yahao Xiao, Ruihua Guo, Xinke Liu, Hong Zhang, Yanlan Bi, Xuebing Xu
Summary: Novel food-grade bigels were fabricated using zein nanoparticles for interfacial stabilization and non-surfactant gelators (beeswax and tapioca) for bulk stabilization. The study demonstrated the importance of interfacial stability for biphasic gels and the roles of the gelation mechanism and the oil/water ratio of a bigel on its microstructure, physical properties, and digestion behaviors. The results showed that using zein nanoparticles allowed for the production of a homogeneous and stable bigel with enhanced structural and functional properties, while the oil content influenced the mechanical and elastic properties of the bigels.
Article
Chemistry, Physical
Betuel Yesiltas, Pedro J. Garcia-Moreno, Ann-Dorit M. Sorensen, Chiranjib Banerjee, Sampson Anankanbil, Zheng Guo, Peter R. Ogilby, Charlotte Jacobsen
Summary: This study investigated the effect of the combined use of sodium caseinate, commercial phosphatidylcholine, and modified phosphatidylcholine on the physical and oxidative stability of fish oil-in-water emulsions. The results showed that substituting a portion of phosphatidylcholine with modified versions improved the oxidative stability, and higher concentrations of modified phosphatidylcholine reduced the formation of oxidation products. The concentration of modified phosphatidylcholine played a key role in enhancing the oxidative stability of the emulsions.
COLLOIDS AND INTERFACES
(2023)
Article
Food Science & Technology
Xinjie Xiong, Caixia Ding, Haiming Shi, Hong Zhang, Yanlan Bi, Xuebing Xu
Summary: This study investigated the potential precursors and pathways of trimethylamine (TMA) formation in fragrant rapeseed oils. The results showed that choline and sinapine were the major precursors for TMA formation, and higher heating temperature, longer heating time, and higher water content potentially led to increased TMA formation.
ACS FOOD SCIENCE & TECHNOLOGY
(2023)
Article
Chemistry, Medicinal
Ann-Dorit Moltke Sorensen, Haizhou Wu, Grethe Hyldig, Niels Boknaes, Ole Mejlholm, Ingrid Undeland, Charlotte Jacobsen
Summary: Currently, side-streams generated in the fish processing industry often end up as low-value products or waste. In order to preserve and enhance the value of these side-streams, this study investigated the use of dipping-based strategies with antioxidants to preserve cod side-streams prior to storage at low temperatures. The results showed that dipping with antioxidant solutions effectively preserved the quality of the side-streams, and the oxidative stability increased with decreased storage temperature. Duralox MANC was found to be the most efficient antioxidant, followed by the lipophilic rosemary extract.
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.
