camellia sinensis catechins

camellia thea catechins mixture of catechins obtained from the leaves of tea, camellia sinensis, theaceae thea assamica catechins thea sinensis catechins PubMed: Changes of major tea polyphenols and production of four new B-ring fission metabolites of catechins from post-fermented Jing-Wei Fu brick tea. PubMed: Determination of catechin content in representative chinese tea germplasms. PubMed: A review on the structure-function relationship aspect of polysaccharides from tea materials. PubMed: Effects of water availability and pest pressures on tea (Camellia sinensis) growth and functional quality. PubMed: Effects of fertilizing with N, p, se, and zn on regulating the element and functional component contents and antioxidant activity of tea leaves planted in red soil. PubMed: The characterization of caffeine and nine individual catechins in the leaves of green tea (Camellia sinensis L.) by near-infrared reflectance spectroscopy. PubMed: Interactions among chemical components of Cocoa tea (Camellia ptilophylla Chang), a naturally low caffeine-containing tea species. PubMed: Determination of quality constituents in the young leaves of albino tea cultivars. PubMed: Catechin concentrates of garden tea leaves (Camellia sinensis L.): extraction/isolation and evaluation of chemical composition. PubMed: Effects of single dose and regular intake of green tea (Camellia sinensis) on DNA damage, DNA repair, and heme oxygenase-1 expression in a randomized controlled human supplementation study. PubMed: Black tea polyphenols: a mechanistic treatise. PubMed: The role of green tea extract and powder in mitigating metabolic syndromes with special reference to hyperglycemia and hypercholesterolemia. PubMed: Effects of season and plantation on phenolic content of unfermented and fermented Sri Lankan tea. PubMed: 8-C N-ethyl-2-pyrrolidinone substituted flavan-3-ols as the marker compounds of Chinese dark teas formed in the post-fermentation process provide significant antioxidative activity. PubMed: Acute effects of green tea extract intake on exogenous and endogenous metabolites in human plasma. PubMed: Estimation of tea catechin levels using micellar electrokinetic chromatography: a quantitative approach. PubMed: Analytical determination of flavonoids aimed to analysis of natural samples and active packaging applications. PubMed: Identification of native catechin fatty acid esters in green tea (Camellia sinensis). PubMed: Rapid tea catechins and caffeine determination by HPLC using microwave-assisted extraction and silica monolithic column. PubMed: Epicatechin and epigallocatechin gallate inhibit formation of intermediary radicals during heating of lysine and glucose. PubMed: Improving the capacity of polypropylene to be used in antioxidant active films: incorporation of plasticizer and natural antioxidants. PubMed: Effects of green tea extract and (-)-epigallocatechin-3-gallate on pharmacokinetics of nadolol in rats. PubMed: The relationship between the structure and biological actions of green tea catechins. PubMed: Green tea from purple leaf coloured tea clones in Kenya- their quality characteristics. PubMed: Bioactive-rich Sideritis scardica tea (mountain tea) is as potent as Camellia sinensis tea at inducing cellular antioxidant defences and preventing oxidative stress. PubMed: Green tea extract with polyethylene glycol-3350 reduces body weight and improves glucose tolerance in db/db and high-fat diet mice. PubMed: Dose-response plasma appearance of green tea catechins in adults. PubMed: Flavonol glycosides with lipid accumulation inhibitory activity and simultaneous quantitative analysis of 15 polyphenols and caffeine in the flower buds of Camellia sinensis from different regions by LCMS. PubMed: Oral green tea catechins transiently lower plasma glucose concentrations in female db/db mice. PubMed: Human clinical studies of tea polyphenols in allergy or life style-related diseases. PubMed: Analysis of some selected catechins and caffeine in green tea by high performance liquid chromatography. PubMed: Redox properties of catechins and enriched green tea extracts effectively preserve L-5-methyltetrahydrofolate: assessment using cyclic voltammetry analysis. PubMed: Catechins are not major components responsible for the beneficial effect of Camellia sinensis on the ovarian δ-ALA-D activity inhibited by cadmium. PubMed: Total polyphenols, catechin profiles and antioxidant activity of tea products from purple leaf coloured tea cultivars. PubMed: Rapid and simultaneous determination of antioxidant markers and caffeine in commercial teas and dietary supplements by HPLC-DAD. PubMed: Evaluation of Camellia sinensis catechins as a swine antimicrobial feed additive that does not cause antibiotic resistance. PubMed: Polyphenols extracted from black tea (Camellia sinensis) residue by hot-compressed water and their inhibitory effect on pancreatic lipase in vitro. PubMed: Role of catechins in the antioxidant capacity of an active film containing green tea, green coffee, and grapefruit extracts. PubMed: Hypoglycemic effect of the water extract of Pu-erh tea. PubMed: Beneficial effects of polyphenol-rich olive oil in patients with early atherosclerosis. PubMed: Discrimination of the production season of Chinese green tea by chemical analysis in combination with supervised pattern recognition. PubMed: The impact of the catechol-O-methyltransferase genotype on vascular function and blood pressure after acute green tea ingestion. PubMed: Grape seed and tea extracts and catechin 3-gallates are potent inhibitors of α-amylase and α-glucosidase activity. PubMed: Engineering the production of major catechins by Escherichia coli carrying metabolite genes of Camellia sinensis. PubMed: Chemical analysis and acetylcholinesterase inhibitory effect of anthocyanin-rich red leaf tea (cv. Sunrouge). PubMed: Inhibition of acetylcholinesterase by green and white tea and their simulated intestinal metabolites. PubMed: Evaluation of green tea extract as a glazing material for shrimp frozen by cryogenic freezing. PubMed: Epicatechin-3-O-(3″-O-methyl)-gallate content in various tea cultivars (Camellia sinensis L.) and its in vitro inhibitory effect on histamine release. PubMed: Isolation and identification of spermidine derivatives in tea (Camellia sinensis) flowers and their distribution in floral organs. PubMed: Development and certification of green tea-containing standard reference materials. PubMed: AFM study of the differential inhibitory effects of the green tea polyphenol (-)-epigallocatechin-3-gallate (EGCG) against Gram-positive and Gram-negative bacteria. PubMed: Metabolic dependence of green tea on plucking positions revisited: a metabolomic study. PubMed: A subacute toxicity evaluation of green tea (Camellia sinensis) extract in mice. PubMed: Effect of milk and brewing method on black tea catechin bioaccessibility. PubMed: Development of new antioxidant active packaging films based on ethylene vinyl alcohol copolymer (EVOH) and green tea extract. PubMed: Green and black tea in relation to gynecologic cancers. PubMed: Mechanistic issues concerning cancer prevention by tea catechins. PubMed: Ten marker compounds-based comparative study of green tea and guava leaf by HPTLC densitometry methods: antioxidant activity profiling. PubMed: Extraction of antioxidants and caffeine from green tea (Camelia sinensis) leaves: kinetics and modeling. PubMed: Increased plasma concentration of epigallocatechin in mice after orally administering a green tea (Camellia sinensis L.) extract supplemented by steamed rice. PubMed: Effect of green tea powder (Camellia sinensis L. cv. Benifuuki) particle size on O-methylated EGCG absorption in rats; The Kakegawa Study. PubMed: Weight control and prevention of metabolic syndrome by green tea. PubMed: The impact of the catechol-O-methyltransferase genotype on the acute responsiveness of vascular reactivity to a green tea extract. PubMed: Determination of catechins and caffeine in proposed green tea standard reference materials by liquid chromatography-particle beam/electron ionization mass spectrometry (LC-PB/EIMS). PubMed: Effects of cellulase from Aspergillus niger and solvent pretreatments on the extractability of organic green tea waste. PubMed: White and green teas (Camellia sinensis var. sinensis): variation in phenolic, methylxanthine, and antioxidant profiles. PubMed: Green tea extract-patents and diversity of uses. PubMed: Recent patents on Camellia sinensis: source of health promoting compounds. PubMed: Preventive effects of black tea theaflavins against mouse type IV allergy. PubMed: Beta-cyclodextrin/surface plasmon resonance detection system for sensing bitter-astringent taste intensity of green tea catechins. PubMed: The antioxidant and pro-oxidant activities of green tea polyphenols: a role in cancer prevention. PubMed: Identification of alpha-glucosidase inhibitors from a new fermented tea obtained by tea-rolling processing of loquat (Eriobotrya japonica) and green tea leaves. PubMed: Diversity among various forms of catechins and its synthesizing enzyme (phenylalanine ammonia lyase) in relation to quality of black tea (Camellia spp.). PubMed: Antihypertensive effect of Benifuuki tea containing O-methylated EGCG. PubMed: Hypochromic effect of an aqueous monoglucosyl rutin solution caused by green tea catechins. PubMed: Tea catechins induce the conversion of preformed lysozyme amyloid fibrils to amorphous aggregates. PubMed: Tea catechins' affinity for human cannabinoid receptors. PubMed: Identification of a major polyphenol and polyphenolic composition in leaves of Camellia irrawadiensis. PubMed: Investigation of the site-specific accumulation of catechins in the tea plant (Camellia sinensis (L.) O. Kuntze) via vanillin-HCl staining. PubMed: Greeen tea extracts lower serum folates in rats at very high dietary concentrations only and do not affect plasma folates in a human pilot study. PubMed: Green tea (Camellia sinensis) catechins and vascular function. PubMed: Effects of catechin enriched green tea on body composition. PubMed: Long-term green tea catechin administration prevents spatial learning and memory impairment in senescence-accelerated mouse prone-8 mice by decreasing Abeta1-42 oligomers and upregulating synaptic plasticity-related proteins in the hippocampus. PubMed: Increase of theaflavin gallates and thearubigins by acceleration of catechin oxidation in a new fermented tea product obtained by the tea-rolling processing of loquat ( Eriobotrya japonica ) and green tea leaves. PubMed: Preparation and antioxidant activity of green tea extract enriched in epigallocatechin (EGC) and epigallocatechin gallate (EGCG). PubMed: Determination of total catechins in tea extracts by HPLC and spectrophotometry. PubMed: In vitro anti-adhesive activity of green tea extract against pathogen adhesion. PubMed: High-throughput technique for comprehensive analysis of Japanese green tea quality assessment using ultra-performance liquid chromatography with time-of-flight mass spectrometry (UPLC/TOF MS). PubMed: Identification of green tea's (Camellia sinensis (L.)) quality level according to measurement of main catechins and caffeine contents by HPLC and support vector classification pattern recognition. PubMed: Inhibition of pectin methyl esterase activity by green tea catechins. PubMed: Green tea catechin enhances cholesterol 7alpha-hydroxylase gene expression in HepG2 cells. PubMed: Evaluation of toxicity of green tea catechins with 90-day dietary administration to F344 rats. PubMed: Temporal changes in aroma release of Longjing tea infusion: interaction of volatile and nonvolatile tea components and formation of 2-butyl-2-octenal upon aging. PubMed: Changes in the concentrations of acrylamide, selected odorants, and catechins caused by roasting of green tea. PubMed: Influence of epigallocatechin gallate and phenolic compounds from green tea on the growth of Oenococcus oeni. PubMed: Preparation of partially decaffeinated instant green tea. PubMed: Study on the antioxidant activity of tea flowers (Camellia sinensis). PubMed: Structure-activity relationships of tea compounds against human cancer cells. PubMed: Green tea extract thermogenesis-induced weight loss by epigallocatechin gallate inhibition of catechol-O-methyltransferase. PubMed: Determination of the predominant catechins in Acacia catechu by liquid chromatography/electrospray ionization-mass spectrometry. PubMed: Modulation of cholesterol metabolism by the green tea polyphenol (-)-epigallocatechin gallate in cultured human liver (HepG2) cells. PubMed: Catechin and caffeine content of green tea dietary supplements and correlation with antioxidant capacity. PubMed: Effect of far-infrared irradiation on catechins and nitrite scavenging activity of green tea. PubMed: Catechin transformation as influenced by aluminum. PubMed: Analytical separation of tea catechins and food-related polyphenols by high-speed counter-current chromatography. PubMed: HPLC analysis of naturally occurring methylated catechins, 3' '- and 4' '-methyl-epigallocatechin gallate, in various fresh tea leaves and commercial teas and their potent inhibitory effects on inducible nitric oxide synthase in macrophages. PubMed: Seasonal variations of phenolic compounds in Australia-grown tea (Camellia sinensis). PubMed: The apoptotic effect of green tea (-)-epigallocatechin gallate on 3T3-L1 preadipocytes depends on the Cdk2 pathway. PubMed: [Determination of catechins and caffeine in tea and tea beverages by high-performance liquid chromatography]. PubMed: Antimicrobial properties of green tea catechins. PubMed: Stability of tea catechins in the breadmaking process. PubMed: Polyphenolic compounds, antioxidant capacity, and quinone reductase activity of an aqueous extract of Ardisia compressa in comparison to mate (Ilex paraguariensis) and green (Camellia sinensis) teas. PubMed: Tissue distribution and intracellular localization of catechins in tea leaves. PubMed: Capillary electrophoretic determination of theanine, caffeine, and catechins in fresh tea leaves and oolong tea and their effects on rat neurosphere adhesion and migration. PubMed: A combination of tea (Camellia senensis) catechins is required for optimal inhibition of induced CYP1A expression by green tea extract. PubMed: Determination of peroxyl radical scavenging activity of flavonoids and plant extracts using an automatic potentiometric titrator. PubMed: Factors affecting the levels of tea polyphenols and caffeine in tea leaves. PubMed: Determination of tea polyphenols and caffeine in tea flowers (Camellia sinensis) and their hydroxyl radical scavenging and nitric oxide suppressing effects. PubMed: Green tea upregulates the low-density lipoprotein receptor through the sterol-regulated element binding Protein in HepG2 liver cells. PubMed: Inhibitory effects of tea catechins and O-methylated derivatives of (-)-epigallocatechin-3-O-gallate on mouse type IV allergy. PubMed: Preparative separation of polyphenols from tea by high-speed countercurrent chromatography. PubMed: Application of near-infrared reflectance spectroscopy to the simultaneous prediction of alkaloids and phenolic substances in green tea leaves.