Results 181 to 190 of about 3,448 (238)

Biodegradation of gallotannins and ellagitannins

Journal of Basic Microbiology, 2006
AbstractNowadays, many researches have been made on gallotannin biodegradation and have gained great success in further utilization. Some of industrial applications of these findings are in the production of tannase, the biotransformation of tannic acid to gallic acid or pyrogallol and detannification of food and fodder. Although ellagitannins have the
Mingshu, Li, Yao, Kai, He, Qiang, Jia, Dongying   +3 more
openaire   +2 more sources

Enzymology of Gallotannin and Ellagitannin Biosynthesis

ChemInform, 2005
AbstractFor Abstract see ChemInform Abstract in Full Text.
Ruth, Niemetz, Georg G, Gross
openaire   +2 more sources

The structure of gallotannins

Chemistry of Natural Compounds, 1973
1. It has been established that the semiacetal hydroxyls of the carbohydrate components of the tannins of the smoketree and of Turkish galls are substituted by galloyl residues and the C3 hydroxy group is free; on the other hand, in the tannins from sumac and Chinese galls all the hydroxy groups of the sugars are substituted by galloyl residues with ...
I. Sh. Buziashvili, N. F. Komissarenko, I. P. Kovalev, V. G. Gordienko, D. G. Kolesnikov   +4 more
openaire   +1 more source

Gallotannins and flavonoids from Haematoxylon campechianum

Phytochemistry, 1996
Two new compounds, 2,6-bis-O-digalloyl-3-O-galloylglucose and 2-O-trigalloyl-1,3,4,6-tetrakis-O-galloylglucose, along with four known gallotannins, were isolated and identified from the leaves of Haematoxylon campechianum. In addition, four known flavonoid and three simple phenolic compounds were also detected.
F E, Kandil, N H, el-Sayed, H N, Micheal, M S, Ishak, T J, Mabry   +4 more
openaire   +2 more sources

Comparison of Antimicrobial Activity of Extracted Gallotannin from Rheum Palmatum, Syzygium Aromaticum and Terminalia Chebula Against Methicillin-resistant Staphylococcus Aureus (MRSA)

International Journal For Multidisciplinary Research
Comparison of antimicrobial activity of extracted gallotannin from Rheum palmatum, Syzygium aromaticum and Terminalia chebula against Methicillin-resistant Staphylococcus aureus (MRSA).
Kanteera Mekruksavanich, Karnsinee Kiratikarnkul, Sermsak Muenai   +2 more
semanticscholar   +1 more source

Gallotannins. Part XIII. The structure of Chinese gallotannin: evidence for a polygalloyl chain

Journal of the Chemical Society C: Organic, 1966
Evidence is presented relating to the disposition of the depsidically linked galloyl groups on the penta-O-galloyl-β-D-glucose core of Chinese gallotannin. Interpretation of the n.m.r. spectra of methylated gallotannin fractions using the spectra of model depsides and several tri-O-methylgalloyl sugar derivatives permits the tentative formulation of ...
G. Britton, P. W. Crabtree, E. Haslam, J. E. Stangroom   +3 more
openaire   +1 more source

Gallotannins are uncompetitive inhibitors of pancreatic lipase activity

Biophysical Chemistry, 2020
Inhibition of pancreatic lipase (PL) is used to treat dyslipidemias and obesity. Phenolic compounds are highly bioactive molecules that can inhibit various enzymes. Our aim was to evaluate the inhibitory activity of selected phenolic compounds of increasing molecular complexity, namely, phenolic acids, mangiferin, penta-O-galloyl-β-d-glucose (PGG) and ...
Elena N. Moreno-Córdova, Aldo A. Arvizu-Flores, Elisa M. Valenzuela-Soto, Karina D. García-Orozco, Abraham Wall-Medrano, Emilio Alvarez-Parrilla, J. Fernando Ayala-Zavala, J. Abraham Domínguez-Avila, Gustavo A. González-Aguilar   +8 more
openaire   +2 more sources

Gallotannins. Part XIV. Structure of the gallotannins

Journal of the Chemical Society C: Organic, 1967
Structures are suggested for the principal naturally occurring polyesters of gallic acid, based upon 1H n.m.r. spectroscopy. The mass-spectroscopic behaviour of methylated Chinese gallotannin is described.
openaire   +1 more source

Body Mass Index as a Determinant of Systemic Exposure to Gallotannin Metabolites during 6‐Week Consumption of Mango (Mangifera indica L.) and Modulation of Intestinal Microbiota in Lean and Obese Individuals

Molecular Nutrition & Food Research, 2018
SCOPE This human clinical pilot trial investigated pharmacokinetics of gallotannin-metabolites and modulation of intestinal microbiota in healthy lean and obese individuals after 6 weeks of daily mango consumption.
R. Barnes, Hyemee Kim, Chuo Fang, W. Bennett, M. Nemec, Maritza A. Sirven, J. Suchodolski, N. Deutz, R. Britton, S. Mertens-Talcott, S. Talcott   +10 more
semanticscholar   +1 more source

Gallotannin Improves the Photoaged-Related Proteins by Extracellular Signal-Regulated Kinases/c-Jun N-Terminal Kinases Signaling Pathway in Human Epidermal Keratinocyte Cells

Journal of Medicinal Food, 2018
Tannins are a type of polyphenols found in several fruits such as grapes and berries, and nuts such as aronias and acorns. Both hydrolyzable tannins and condensed tannins are referred to as tannins.
G. G. Ryeom, W. Bang, Young Bu Kim, Go Eun Lee   +3 more
semanticscholar   +1 more source