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Depigmenting Effect of Catechins [PDF]

Molecules, 2009
The aim of the present work was to clarify the anti-melanogenic mechanism of the catechin group. In this study, we used (-)-epigallocatechin-3-gallate (EGCG), (-)-epigallocatechin (EGC), (-)-catechin (C), and gallic acid (GA).
Masaru Toriyama, Kazuomi Sato
doaj   +3 more sources

Autoxidation of Catechin [PDF]

Nature, 1955
An exploratory study of those reactions of catechin which lead to polymer formation has enabled the conditions for autoxidation to be defined. The formation of polymers and hydrogen peroxide during the autoxidation at 35 and pH6-8 of catechin and of related 3': 4'-dihydroxyflavans has been studied by measurement of oxygen uptake, and by absorption ...
D. E. HATHWAY, J. W. T. SEAKINS
exaly   +3 more sources

Metabolic Flux Analysis of Catechin Biosynthesis Pathways Using Nanosensor

Antioxidants, 2020
(+)-Catechin is an important antioxidant of green tea (Camelia sinensis (L.) O. Kuntze). Catechin is known for its positive role in anticancerous activity, extracellular matrix degradation, cell death regulation, diabetes, and other related disorders. As
Habiba Kausar, Ghazala Ambrin, Mohammad K. Okla, Walid Soufan, Abdullah A. Al-Ghamdi, Altaf Ahmad   +5 more
doaj   +1 more source

Seasonal Development of Paeonia obovata and Paeonia oreogeton and Their Contents of Biologically Active and Reserve Substances in the Forest-Steppe Zone of Western Siberia

Horticulturae, 2023
Paeonia obovata and Paeonia oreogeton belong to the monotypic family Paeoniaceae. Both are popular as ornamental plants. P. obovata and P. oreogeton have been introduced into Novosibirsk Oblast (Western Siberia) from Primorye (Far East).
Olga V. Kalendar, Vera A. Kostikova, Tatiana A. Kukushkina, Andrey S. Erst, Alexander A. Kuznetsov, Maxim S. Kulikovskiy, Olga Y. Vasilyeva   +6 more
doaj   +1 more source

Thermally Stable and Antimicrobial Active Poly(Catechin) Obtained by Reaction with a Cross-Linking Agent

Biomolecules, 2020
(+)-Catechin is a flavonoid with valuable antioxidant and antimicrobial properties, found in significant amounts in green tea leaves. Polymeric forms of catechin have been obtained by enzymatic reaction, photopolymerization, and polycondensation in ...
Malgorzata Latos-Brozio, Anna Masek, Małgorzata Piotrowska   +2 more
doaj   +1 more source

Gut/Oral Bacteria Variability May Explain the High Efficacy of Green Tea in Rodent Tumor Inhibition and Its Absence in Humans

Molecules, 2020
Consumption of green tea (GT) and GT polyphenols has prevented a range of cancers in rodents but has had mixed results in humans. Human subjects who drank GT for weeks showed changes in oral microbiome.
Guy R. Adami, Christy Tangney, Joel L. Schwartz, Kim Chi Dang   +3 more
doaj   +1 more source

Determination of catechins in cosmetics by high⁃performance liquid chromatography

Shanghai yufang yixue, 2022
ObjectiveTo establish a high⁃performance liquid chromatography （HPLC） quantitative method for the determination of epicatechin （EC）， （-）⁃epicatechin gallate （ECG）， （-）⁃epigallocatechin （EGC）， （-）⁃epigallocatechin gallate （EGCG）， （-）⁃gallocatechin （GC）， （-
RU Ge, HAN Jing, PENG Xingsheng, ZHENG Rong   +3 more
doaj   +1 more source

Impact of fermentation, drying, roasting and Dutch processing on flavan-3-ol stereochemistry in cacao beans and cocoa ingredients

Chemistry Central Journal, 2011
This paper reports a systematic study of the level of flavan-3-ol monomers during typical processing steps as cacao beans are dried, fermented and roasted and the results of Dutch-processing.
Miller Kenneth B, Payne Mark J, Bergmeier Stephen C, Krake Susann H, Hurst W Jeffrey, Stuart David A   +5 more
doaj   +1 more source

Encapsulation of Catechin into β-Glucan Matrix Using Wet Milling and Ultrasonication as a Coupled Approach: Characterization and Bioactivity Retention

Foods, 2022
In this study, the nanoencapsulation of catechin into the β-glucan matrix from oats [O-Glu (C)] and barley [B-Glu (C)] was performed using the coupled approach of ultrasonication and wet milling.
Asima Shah, ZanoorUl Ashraf, Asir Gani, Faiza Jhan, Adil Gani, Munazah Sidiq   +5 more
doaj   +1 more source

Effects of Blue-Light-Induced Free Radical Formation from Catechin Hydrate on the Inactivation of Acinetobacter baumannii, Including a Carbapenem-Resistant Strain

Molecules, 2018
Catechin is a flavan-3-ol, a derivative of flavans, with four phenolic hydroxyl groups, which exhibits a wide range of physiological properties. Chromatographic analyses were employed to examine the effects of blue light irradiation on the changes of ...
Meei-Ju Yang, Yi-An Hung, Tak-Wah Wong, Nan-Yao Lee, Jeu-Ming P. Yuann, Shiuh-Tsuen Huang, Chun-Yi Wu, Iou-Zen Chen, Ji-Yuan Liang   +8 more
doaj   +1 more source