Results 1 to 10 of about 92,066 (289)

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

Isolation and identification of a bioactive compound from Japanese red pine (Pinus densiflora) tea and its antioxidative effects on vascular endothelial cells

NFS Journal, 2023
The bioactive compound, which showed a potent nitric oxide production stimulation effect, was isolated from Japanese red pine tea and identified as (+)-catechin.
WenQian Jiang, Yuka Hattori, WonJune Lee, YiQian Zhang, KaiNing Zhang, Shojiro Hishiyama, Tomoko Shimokawa, Hitoshi Miyazaki, Shigeki Yoshida   +8 more
doaj   +1 more source

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

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

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

Flavanol monomer-induced changes to the human faecal microflora [PDF]

, 2008
We have investigated the bacterial-dependent metabolism of ( − )-epicatechin and (+)-catechin using a pH-controlled, stirred, batch-culture fermentation system reflective of the distal region of the human large intestine.
Xenofon Tzounis, Jelena Vulevic, Gunter G. C. Kuhnle, Trevor George, Jadwiga Leonczak, Glenn R. Gibson, Catherine Kwik-Uribe, Jeremy P. E. Spencer, Wilson, Frayn, Gibson, Hughes, Garsetti, Matsui   +13 more
core   +1 more source

Critical evaluation of potentiometric redox titration in enology [PDF]

, 2005
Measurements of the zero current potential of a platinum electrode immersed in solutions of tanins or in wines of various origins, were performed during the additions of a solution of Ti(III), or of a solution of dichlorophenolindophenol (DCPIP), in ...
Comtat, Maurice, Durliat, Hélène
core   +3 more sources

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

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

Flow injection determination of total catechins and procyanidins in white and red wines [PDF]

, 2002
An easily automatable flow-injection (FI) method for the determination of total catechins is reported. The method is based on the reaction of vanillin in acid medium to yield a coloured product with maximum absorption at 500 nm. After optimisation by the
Carando, Fabios, Garcı́a-Parrilla, J González-Rodrı́guez, M.D Luque de Castro, Mayen, P Pérez-Juan, Prasongsidh   +7 more
core   +1 more source