Results 11 to 20 of about 2,662 (201)

Separation, Identification, and Bioactivities of the Main Gallotannins of Red Sword Bean (Canavalia gladiata) Coats

open access: yesFrontiers in Chemistry, 2018
The red sword bean (Canavalia gladiata) is an underutilized edible bean cultivated in China. It was previously found to have the highest content of antioxidant polyphenols among 42 edible beans, mainly gallic acid, and gallotannins in its red bean coat ...
Ren-You Gan   +7 more
doaj   +2 more sources

Perspectives for gallotannins neuroprotective potential - current experimental evidences

open access: yesJournal of Medical Science, 2016
Gallotannins are class of hydrolyzable tannins consisting of gallic acid and a sugar moiety. Currently, there is growing interest around a possible neuroprotective effect of this class of phytochemicals, which is suggested to be a result of their active ...
Radosław Kujawski   +9 more
doaj   +2 more sources

Recognition of Gallotannins and the Physiological Activities: From Chemical View

open access: yesFrontiers in Nutrition, 2022
Gallotannins, characterized with the glycosidic core and galloyl unit, are seemed as vital components of hydrolyzable tannins. Benefit from the more and more discoveries of their bioactivities and edibility, application of gallotannins in food industry ...
Hua-Feng He, Hua-Feng He
doaj   +3 more sources

Effect of SO2, glutathione and gallotannins on the shelf-life of a Cortese white wine bottled with different oxygen intakes [PDF]

open access: yesOENO One, 2022
The work aimed to study the effect of adding reduced glutathione (GSH) and/or gallotannins at bottling on the shelf-life of a Cortese white wine to limit the use of SO2. The experimental trial was carried out following a full factorial plan consisting of
Silvia Motta   +4 more
doaj   +2 more sources

New Gallotannin and other Phytochemicals from Sycamore Maple () Leaves

open access: yesNatural Product Communications, 2015
The maple (Acer) genus is a reported source of bioactive (poly)phenols, including gallotannins, but several of its members, such as the sycamore maple (A. pseudoplatanus) . remain uninvestigated. Herein, thirty-nine compounds, including a new gallotannin,
Lu Zhang   +6 more
doaj   +2 more sources

Synthesis of gallotannins

open access: yesCarbohydrate Research, 2001
As a contribution to the synthesis of gallotannins, four O-galloyl-D-glucoses (3-O-, 6-O-, 3,6-di-O-, 3,4,6-tri-O-galloyl-D-glucose) have been prepared by the reaction of tri-O-benzylgalloyl chloride and partially protected glucose derivatives (1,2-O-, and 1,2:5,6-di-O-isopropylidene-alpha-D-glucofuranose), followed successively by catalytic ...
Yi Luo   +4 more
core   +4 more sources

A structurally unique Fusobacterium nucleatum tannase provides detoxicant activity against gallotannins and pathogen resistance [PDF]

open access: yesMicrobial Biotechnology, 2022
Summary Colorectal cancer pathogenesis and progression is associated with the presence of Fusobacterium nucleatum and the reduction of acetylated derivatives of spermidine, as well as dietary components such as tannin‐rich foods.
José Miguel Mancheño   +23 more
doaj   +3 more sources

GALLOTANNINS FROM QUERCUS ROBUR CULTIVATED IN EGYPT [PDF]

open access: yesBulletin of Pharmaceutical Sciences. Assiut University, 1998
Four gallotannins: 1,2,3-tri-O-galloyl-b-glucose; 1,2,3,6-tetra-O-galloyl-b-D-glucose; 1,2,3,4,6-penta-O-galloyl-b-D-glucose and 1,2,3,4,6-penta-O-galloyl-a-D-glucose, together with gallic acid and methoxy gallic acid have been isolated from the seeds of
Salwa Farag   +2 more
doaj   +2 more sources

Mass spectrometry for the direct analysis of gallotannins

open access: yes, 1985
Structural analysis of gallotannins is currently carried out in the following steps: - extraction from the natural Matrix; -chromatographic isolation/putrification; - chemical or enzymatic hydrolysis of the tannins; - instrumental/chemical analysis of ...
R. Maffei Facino   +3 more
core   +4 more sources

Ginnalin A and hamamelitannin: the unique gallotannins with promising anti-carcinogenic potential

open access: yesExploration of Targeted Anti-tumor Therapy, 2023
Tannins are secondary metabolites that belong to the family of polyphenolic compounds and have gained a huge interest among researchers due to their versatile therapeutic potential.
Rippin   +7 more
doaj   +1 more source

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