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Showing 1 to 20 of 54 for “"catechin"”.
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An electrophysiological study of the effects of resveratrol and catechin at GABAa receptors
<p>Resveratrol and catechin have behavioral and neuroprotective effects that may be due to their interaction with neuronal ion channels. It was hypothesized that the grape compounds, resveratrol and catechin modulate GABAA<sub>A</sub> receptors. To address this hypothesis, the effects of …
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Effects of green tea catechin extract on serum lipids in postmenopausal women: a randomized, placebo-controlled clinical trial
… Test the efficacy of a green tea catechin extract (GTE) to improve lipid profile in postmenopausal women. <bold>Methods:</bold> 886 women were enrolled and randomized to consume either 1200 mg of GTE (800 mg EGCG) or placebo, daily. Fasting serum samples were drawn for lipid panel …
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Catechin, a novel root exudate of Centaurea stoebe, exhibits pleiotropic effects on the soil microbial community and individual soil isolates, and undergoes chemical changes with numerous abiotic factors from soil
Allelopathy has been studied for (±)-catechin, a root exudate of spotted knapweed, as a plausible mechanism that facilitates knapweed invasion in North America. Phytotoxic effects are observed in invaded fields as well as greenhouse experiments when employing catechin or growing spotted knapweed, …
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Catechin, a novel root exudate of Centaurea stoebe, exhibits pleiotropic effects on the soil microbial community and individual soil isolates, and undergoes chemical changes with numerous abiotic factors from soil
Allelopathy has been studied for (±)-catechin, a root exudate of spotted knapweed, as a plausible mechanism that facilitates knapweed invasion in North America. Phytotoxic effects are observed in invaded fields as well as greenhouse experiments when employing catechin or growing spotted knapweed, …
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Study of Neem bark tannins for the leather industry
… as: One procyanidin trirner Four dimers Cl Epicatechin-[4a-8j-epicatechin epicatechin. B1 Epicatechin- [4[3-8]-catechin, B2 Epicatechin- [43-8]-epicatechin, B3 Catechin-[4ct-81-catechin, B4 Catechin-[4a-81-epicatechin. Four well known monomers (+)-Catechin, (-)-Epicatechin, (+)-Gallocatechin, …
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Modulating Bone morphogenetic protein (BMP) and Transforming growth factor-beta (TGF-β) signalling with green tea catechins in mammalian cells
… study, it was hypothesised that these green tea catechin compounds might inhibit TGFβ signalling while promoting BMP signalling. This study demonstrates that these green tea catechin compounds inhibit TGFβR-II and TGFβ1-induced SMAD-dependent by reducing reporter activity, reduce the …
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Chemical characterization of proanthocyanidins in purple, blue, and red corn after different milling processes and their anti-inflammatory properties
… known as condensed tannins. The monomers include catechin, epicatechin, and gallic acid esters. They have beneficial effects on several chronic diseases because of anti-inflammatory and antioxidant effects. These effects depend on the degree of polymerization of PA. PA are natural bioactive …
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Feeding determinants in aphids with special reference to the Rose Aphid Macrosiphum rosae (L.) / by Zhongkui Peng.
… of host plants and the deterrent effect of catechin and its oxidative condensation products.
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Basic studies of the cross-linking reaction of collagen with oxazolidine and plant polyphenols
… study showed pecan tannins are copolymers of catechin and gallocatechin with a ratio 1:6 and myrica tannins are prodeiphinidins with 40% of the structural units gallated. The average molecular weight was measured by GPC and the number average molecular weight of tannins was found to be 25 …
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The nature of a constituent of quebracho tannin.
… called "phlobaphenes" on boiling with acid. Catechin tannin is a phlobatannin and the structure of catechin is known, but not the structure of its tannin. The structure of no phlobatannin is known at present. Many have speculated as to their general structure on very slim evidence and some …
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STUDIES ON THE EFFECTS OF SOME FLAVONOIDS ON DNA TRANSCRIPTION AND CLONING OF LIPOAMIDE DEHYDROGENASE GENE
… 26% of the same process. In contrast, (+)-catechin at concentrations less than l0uM stimulates transcription. However, with increasing concentrations of 20, 30, 40 and 50 uM, respectively all the three flavonoids inhibited transcription. At the 50% inhibition level, the concentrations of …
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Enzymatic polymerisation in situ of depolymerised mimosa tannin applied to stabilisation of collagen
… utilisation of small phenolic compounds such as catechin to improve penetration with subsequent in situ enzymecatalysed polymerisation may provide a novel and alternative tanning agent. In this research, catechin was oxidised by enzymatic catalysis using laccase, with the polymerisation confirmed …
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Studies on the interaction of surfactants and neutral cyclodextrins by capillary electrophoresis. Application to chiral analysis
… as indicated by the enantioresolution of (+/-)-Catechin, which was firstly selected as a model compound representative of important chiral phytomarkers. Then a CD-MEKC system, composed of sodium dodecyl sulfate as surfactant (90 mM) and hydroxypropyl-beta-cyclodextrin (25 mM) as chiral selector, …
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The Stereochemistry of Complex Inorganic Compounds. I. Preferential Coordination in Complexes Containing Trans-1,2-Diaminocyclohexane. Ii. Studies on the Resolution of Inorganic Complexes by Microorganisms. Iii. Oxidation of Dextro-Catechin as Catalyzed by Some Optically Active Cobaltcomplexes
Made available in DSpace on 2014-12-05T19:37:20Z (GMT). No. of bitstreams: 1 6001627.pdf: 3326288 bytes, checksum: 201a11883d9fae80b0c5d073d7efc5e0 (MD5) Previous issue date: 1960
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A vegyes gyümölcsös likőr készítése extrakciós módszer alkalmazásával és annak antioxidáns tartalmának vizsgálata
… kapacitását. Az analízishez Folin-Ciocalteu és Catechin módszereket használtam. A munka során optimalizáltam a kísérleti paramétereket az oldhatóság javítása és a funkcionális komponensek degradációjának minimalizálása érdekében. A dolgozat ezzel értékes adatokat szolgáltat a …
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Nutritional Studies on the Utilization of Winged Bean (Psophocarpus Tetragonolobus L. Dc) Seeds and Leaves (Carotenoids, Bean-Curd, Anti-Nutrients, Reversed Phase Hplc, Phytic Acid)
… whole seed flour varied between 0.2 and 0.7mg catechin equivalents/g four. pH modification markedly affected the solubility of nitrogen, phytic acid and minerals in seed flour slurries.
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Development and Evaluation of a Niosome Carrier for Topical Use of Antioxidant
… dermatological health-care is of great interest. Catechin is a family of natural phenol compounds showing potential antioxidant properties. However, topical application of this antioxidant encounters several challenges. Firstly, the skin barrier which mostly lays in the stratum corneum (SC) …
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Flavonoid protection of cardiac cells against ischemia-reperfusion injury
… best protection against cell death was given by catechin (44-58 %), epigallocatechin gallate (48%), proanthocyanidins (44%), and ascorbic acid (57-92%). A low concentration (10 µM) of catechin was more effective with a long-term (2 days) incubation time (64%), while a higher concentration (50 µM) …
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Interaction of milk proteins with kiwifruit and mixed fruit polyphenols : A dissertation submitted in partial fulfilment of the requirements for the Degree of Master of Science in Food Innovation at Lincoln University
… complex extracts showed predominant amounts of catechin, epicatechin and procyanidin B1 and B2, along with smaller amounts of other phenols such as caffeic acid, gallic acid, protocatechuic acid, syringic acid, rutin and quercetin. The HPLC extraction was carried out in various step using 70% …
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Protein engineering of cota laccase by using bacillus subtilis spore display
… with natural phenolic compounds, such as (+)-catechin, (-)-epicatechin and sinapic acid in aqueous-organic media. In general, the catalytic efficiency (V<sub>max</sub>/K<sub>m</sub> ([delta]A/OD580)/mM) of T480A-CotA is higher than wt-CotA for all the substrates. Then, the V<sub>max</sub> for …
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