gallocatechin-3-gallate and flavan-3-ol

gallocatechin-3-gallate has been researched along with flavan-3-ol* in 2 studies

Other Studies

2 other study(ies) available for gallocatechin-3-gallate and flavan-3-ol

Article	Year
The Mechanisms of Alpha-Amylase Inhibition by Flavan-3-Ols and the Possible Impacts of Drinking Green Tea on Starch Digestion. Journal of food science, 2018, Volume: 83, Issue:11 Many studies have shown that flavan-3-ols inhibit mammalian alpha-amylases but the published IC Topics: alpha-Amylases; Amylose; Animals; Catechin; Digestion; Flavonoids; Hydrolysis; Inhibitory Concentration 50; Models, Molecular; Oligosaccharides; Starch; Swine; Tea	2018
Direct scavenging of nitric oxide and superoxide by green tea. Food and chemical toxicology : an international journal published for the British Industrial Biological Research Association, 2002, Volume: 40, Issue:12 In the present study, we investigated the free radical scavenging effects of green tea extract and green tea tannin mixture and its components using a nitric oxide (NO) and superoxide (O(2)(-)) generating system in vitro. Green tea extract showed direct scavenging activity against NO and O(2)(-) and green tea tannin mixture, at the same concentration, showed high scavenging activity. Comparison of the activities of seven pure compounds isolated from green tea tannin mixture showed that (-)-epigallocatechin 3-O-gallate (EGCg), (-)-gallocatechin 3-O-gallate (GCg) and (-)-epicatechin 3-O-gallate (ECg) had higher scavenging activities than (-)-epigallocatechin (EGC), (+)-gallocatechin (GC), (-)-epicatechin (EC) and (+)-catechin (C), showing the importance of the structure of flavan-3-ol linked to gallic acid for this activity. Among the gallate-free tannins, EGC and GC were more effective O(2)(-) scavengers than EC and C, indicating the O-trihydroxy structure in the B ring is an important determinant of such activity. However, this structure did not affect the NO scavenging activity. These findings confirm that green tea tannin has excellent antioxidant properties, which may be involved in the beneficial effect of this compound. Topics: Catechin; Dose-Response Relationship, Drug; Flavonoids; Free Radical Scavengers; In Vitro Techniques; Nitric Oxide; Oxidants; Oxidation-Reduction; Structure-Activity Relationship; Superoxides; Tannins; Tea	2002

Article

Year

The Mechanisms of Alpha-Amylase Inhibition by Flavan-3-Ols and the Possible Impacts of Drinking Green Tea on Starch Digestion.

Journal of food science, 2018, Volume: 83, Issue:11

Many studies have shown that flavan-3-ols inhibit mammalian alpha-amylases but the published IC

Topics: alpha-Amylases; Amylose; Animals; Catechin; Digestion; Flavonoids; Hydrolysis; Inhibitory Concentration 50; Models, Molecular; Oligosaccharides; Starch; Swine; Tea

2018

Direct scavenging of nitric oxide and superoxide by green tea.

Food and chemical toxicology : an international journal published for the British Industrial Biological Research Association, 2002, Volume: 40, Issue:12

In the present study, we investigated the free radical scavenging effects of green tea extract and green tea tannin mixture and its components using a nitric oxide (NO) and superoxide (O(2)(-)) generating system in vitro. Green tea extract showed direct scavenging activity against NO and O(2)(-) and green tea tannin mixture, at the same concentration, showed high scavenging activity. Comparison of the activities of seven pure compounds isolated from green tea tannin mixture showed that (-)-epigallocatechin 3-O-gallate (EGCg), (-)-gallocatechin 3-O-gallate (GCg) and (-)-epicatechin 3-O-gallate (ECg) had higher scavenging activities than (-)-epigallocatechin (EGC), (+)-gallocatechin (GC), (-)-epicatechin (EC) and (+)-catechin (C), showing the importance of the structure of flavan-3-ol linked to gallic acid for this activity. Among the gallate-free tannins, EGC and GC were more effective O(2)(-) scavengers than EC and C, indicating the O-trihydroxy structure in the B ring is an important determinant of such activity. However, this structure did not affect the NO scavenging activity. These findings confirm that green tea tannin has excellent antioxidant properties, which may be involved in the beneficial effect of this compound.

Topics: Catechin; Dose-Response Relationship, Drug; Flavonoids; Free Radical Scavengers; In Vitro Techniques; Nitric Oxide; Oxidants; Oxidation-Reduction; Structure-Activity Relationship; Superoxides; Tannins; Tea

2002