A5088897813- Tea Polyphenols and Effects
- Tryptophan and brain disorders
- Genetics, Aging, and Longevity in Model Organisms
- Phytochemicals and Antioxidant Activities
- Food Quality and Safety Studies
- Circadian rhythm and melatonin
- Biochemical Analysis and Sensing Techniques
- Vagus Nerve Stimulation Research
- Aortic aneurysm repair treatments
- Ginkgo biloba and Cashew Applications
- Natural Antidiabetic Agents Studies
- Proteins in Food Systems
- Sensory Analysis and Statistical Methods
- Food Chemistry and Fat Analysis
- Exercise and Physiological Responses
- Phytochemistry Medicinal Plant Applications
- Fermentation and Sensory Analysis
- Chronic Kidney Disease and Diabetes
- Biochemical Acid Research Studies
- Microencapsulation and Drying Processes
- Salivary Gland Disorders and Functions
- Analytical Chemistry and Chromatography
- Traditional Chinese Medicine Analysis
- Bee Products Chemical Analysis
- Plant Toxicity and Pharmacological Properties
Hunan Agricultural University
2016-2025
Ministry of Agriculture and Rural Affairs
2022-2024
Ministry of Education of the People's Republic of China
2022-2024
Hunan Normal University
2023
Hunan Provincial People's Hospital
2023
Shandong Academy of Agricultural Sciences
2008
Summary As tea is one of the most popular beverages consumed worldwide, it important for customers and business investigators to develop an easy reliable method discriminate between different types teas from each other. A total eighty‐seven various white, green, oolong, black Puer were collected major estates in China, their catechin contents volatile compounds compared by high performance liquid chromatograph gas mass spectrometer. It was found green contained highest concentrations...
The green tea polyphenol epigallocatechin-3-gallate (EGCG) is widely consumed as a dietary supplement. Its potential properties include slowing aging and extending lifespan, although how exactly this achieved remains unclear. Here, we report that EGCG promoted healthy lifespan in Caenorhabditis elegans when administered throughout or only at early-to-mid adulthood. Specifically, extended an inverted U-shaped dose-response manner. life-extending mechanism was stimulated by EGCG-induced...
The pile-fermentation temperature significantly influences the quality of dark tea. study compared traditional tea with temperature-controlled at 45°C to improve quality. Sensory evaluation, untargeted metabolomics, and Illumina MiSeq sequencing were employed assess effects. Results indicated that fermentation produced a mellower taste enhanced overall flavor, while also altering abundance key microorganisms accelerating formation flavor compounds. predominant bacterial genus identified was...
Summary Properties of leaf and infusion colours, chemical components volatile flavour compounds oolong teas their correlation with perceived quality score given by tea‐tasting panel were analysed. The scores for appearance infused correlated strongly concentrations chlorophyll a (chl ), b ) (chl) ( r = 0.355–0.433, P < 0.05) the total (TQS) positively chl , 0.517–0.533, 0.01). taste TQS concentration free amino acid 0.514, 0.694, 0.01) theanine 0.500, 0.684, composition quantities varied...
The present study examined the effects of black tea (Camellia sinensis) extracts (BTE) in Caenorhabditis elegans under various abiotic stressors. Results showed BTE increased nematode resistance to osmosis, heat, and UV irradiation treatments. However, could not increase nematodes' lifespan normal culture conditions MnCl2-induced toxicity at concentrations we used. Further studies that decreased reactive oxygen species up-regulated some antioxidant enzymes, including GSH-PX, genes, such as...
Fuzhuan brick tea (FBT) is traditionally consumed by the ethnic group in border region of northwest China. The unique yellow fungal (Eurotium cristatum) growth phase considered to be key process point manufacture tea. fungi from FBT are not only strongly correlated quality tea, but also have potential function preventing obesity. water extract (100 μg/mL) can significantly inhibit fat deposition 3T3-L1 adipocyte and Caenorhabditis elegans. Furthermore, inhibition formation was due...
In this study, Citrus aurantium essential oil encapsulated in casein-phospholipid nanocomposites (CAEO-CS-PL-NCs) was prepared and evaluated for controlled-release capacity of aroma compounds. The particle size the strongly influenced by phospholipid concentration nanocomposites. Avrami Korsmeyer-Peppas kinetic models were used to analyze release kinetics freeze-dried CAEO-CS-PL-NCs (FD-CAEO-CS-PL-NCs) at different temperatures relative humidities. FD-CAEO-CS-PL-NCs stored various times with...
In diabetes mellitus, disordered glucose and lipid metabolisms precipitate diverse complications, including nonalcoholic fatty liver disease, contributing to a rising global mortality rate. Theaflavins (TFs) can improve disorders of glycolipid metabolism in diabetic patients reduce various types damage, glucotoxicity, lipotoxicity, other associated secondary adverse effects. TFs exert effects lower blood lipids levels, partly by regulating digestive enzyme activities, activation OATP-MCT...
Abstract The quality of Congou black tea fluctuates greatly with the changing seasons. However, variations in taste manufactured during a single spring season are far from clear. Here, we analyzed HuangJinCha (HJC) using sensory evaluation and found early was better than that late spring. Principal component analysis (PCA) cluster for data electronic tongue confirmed variation revealed April 4 may be critical time point at which become apparent. contents polyphenols (TP), total catechins...
Black tea extract is more effective than green in protecting<italic>C. elegans</italic>against hypertonic stress, within the studied concentration range.
Astringency has an important impact on the taste quality of tea infusion, a process which occurs when polyphenols complex with salivary proteins to form impermeable membrane. (-)-Epigallocatechin gallate (EGCG) is main astringent compound found in green and mucin protein present saliva. Determining turbidity EGCG–mucin mixtures effective method quantify astringency intensity EGCG solutions. In this study, effects taste-related, substances during was investigated under reacting conditions pH...
Lipofuscin age pigment is often considered as a hallmark of aging, which shows an accumulation rate inversely correlated with longevity and it primarily composed carbonyl-amino cross linked protein residues. The purpose this study to determine whether epigallocatechin gallate (EGCG) would inhibit the formation pigment in both MDA-modified human serum albumin D-galactose-induced aging mice models by using spectrofluorometry, HPLC-PDA, FTIR spectrometer, SEM TEM observation. Results showed...
ABSTRACT The growth inhibition and cytotoxic effects of theaflavins mixture pure [theaflavin, theaflavins-3-gallate, theaflavins-3′-gallate theaflavin-3, 3′-digallate] from black tea on human liver cancer HepG2 cells, gastric SGC-7901 lung A549 cells acute promyelocytic leukemia K562 were investigated. four major obtained enzymatically oxidized catechins using preparative high-performance liquid chromatography (HPLC). purity the structures isolated compounds confirmed by 1H nuclear magnetic...
Epigallocatechin-3-gallate (EGCG) is the most abundant polyphenol in green tea. Our previous report showed that induced hormesis was a critical determinant for promotion of healthy lifespan Caenorhabditis elegans. In present study, we investigated anti-aging effects main active ingredients We found galloylated catechins (EGCG and epicatechin gallate) could extend C. elegans, while their metabolites (gallic acid, epicatechin, epigallocatechin) not. Interestingly, combination with theanine,...