Astringency in fruits. I. Microbial degradation of catechin

Chandra, T.S.; Al., Madhavakrishna, W., Et; Nayudamma, Y.

doi:10.1139/m69-054

Cited by 13 publications

(2 citation statements)

References 6 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Tannic acid (TA) (penta‐ m ‐digalloyl‐glucose) is a natural polyphenolic compound found in some galls of Quercus species (oaks, Quercus infectoria , etc), Rhus species (sumacs, R. coriaria, R. glabra, Rhus thypia ), beverages (red wine, tea, coffee), fruits, and vegetables. This hydrolyzable tannin is produced on young oak/sumac twigs by a gall wasp ( Andricus gallate tinctorial ) or other insects and yields gallic acid and glucose . It is used for treating burn injuries, healing wounds, cold sores, bleeding, chronic diarrhea, and so forth and as a flavouring agent .…”

Section: Introductionmentioning

confidence: 99%

Tannic acid as a natural antioxidant compound: Discovery of a potent metabolic enzyme inhibitor for a new therapeutic approach in diabetes and Alzheimer's disease

Türkan

Taslimi

Saltan

2019

J Biochem & Molecular Tox

View full text Add to dashboard Cite

Multiple studies have been recorded on the synthesis and design of multi‐aim anti‐Alzheimer molecules. Using dual butyrylcholinesterase/acetylcholinesterase inhibitor molecules has attracted more interest in the therapy for Alzheimer's disease. In this study, a tannic acid compound showed excellent inhibitory effects against acetylcholine esterase (AChE), α‐glycosidase, α‐amylase, and butyrylcholinesterase (BChE). IC50 values of tannic acid obtained 11.9 nM against α‐glycosidase and 3.3 nM against α‐amylase, respectively. In contrast, Ki values were found of 50.96 ± 2.18 µM against AChE and 53.17 ± 4.47 µM against BChE. α‐Glycosidase inhibitor compounds can be utilized as a novel group of antidiabetic drugs. By competitively decreasing glycosidase activity, these inhibitor molecules help to hamper the fast breakdown of sugar molecules and thereby control the blood sugar level.

show abstract

Section: Introductionmentioning

confidence: 99%

Tannic acid as a natural antioxidant compound: Discovery of a potent metabolic enzyme inhibitor for a new therapeutic approach in diabetes and Alzheimer's disease

Türkan

Taslimi

Saltan

2019

J Biochem & Molecular Tox

View full text Add to dashboard Cite

show abstract

“…Production of tannase increased with the concentration of tannic acid. Chandra et al (1973) reported that the degradation of wood apple tannin by A. niger and Penicillium sp. occurred only in glucose medium.…”

Section: Culture Conditions Favouring Degradation Of Tanninsmentioning

confidence: 99%

Aquatic Microbiology with Reference to Tannin Degradation

Mahadevan

Muthukumar

1980

Hydrobiologia

View full text Add to dashboard Cite

show abstract

Oxidative detoxification of aqueous bark extracts. Part I: Autoxidation

Field¹,

Lettinga²,

Habets

1990

J of Chemical Tech & Biotech

View full text Add to dashboard Cite

The aqueous extracts of bark were studied as a model for wet debarking wastewater. These extracts are known to contain a high concentration of methanogenic toxic tannins. The objective of this study was to modify the native bark tannins (oligomers) with oxidative methods in order to decrease their methanogenic toxicity. The tannins were polymerized by autoxidation, forming colored high-molecular-weight tannins that were non-toxic to methanogenic bacteria. The autoxidation of pine bark extracts provided complete detoxification. In the case of spruce bark, which was responsible for extracts of higher toxicity, the detoxification was either partial or complete depending on the specific sample of spruce bark porn which the extract was prepared. The autoxidation of birch bark did not result in significant detoxification. Although the oligomeric tannins were effectively polymerized, birch bark extracts contain non-tannin toxins which were not affected by the autoxidation and evidence that highly toxic intermediates were formed during the high pH autoxidation of birch bark extracts is presented.Autoxidative detoxification offers an interesting approach for pretreating coniferous bark wastewaters. The oxidation reactions of the pretreatment serve to detoxify the largely non-BOD tannin paction. Thus the methanogenic * Present address: Department of Chemical Engineering, Universidad Autonoma de Barcelona, 08193Bellaterra (Barcelona), Spain. 15 J . Chem. Tech. Biotechnol. 0268-2575/90/$03.50 0 1990 Society of Chemical Industry. Printed in Great Britain J . A. Field, G . Lettinga, L. H . A . Hahets bacteria are not inhibited during the anaerobic wastewater treatment for removing BOD.

show abstract

Astringency in fruits. I. Microbial degradation of catechin

Cited by 13 publications

References 6 publications

Tannic acid as a natural antioxidant compound: Discovery of a potent metabolic enzyme inhibitor for a new therapeutic approach in diabetes and Alzheimer's disease

Tannic acid as a natural antioxidant compound: Discovery of a potent metabolic enzyme inhibitor for a new therapeutic approach in diabetes and Alzheimer's disease

Aquatic Microbiology with Reference to Tannin Degradation

Oxidative detoxification of aqueous bark extracts. Part I: Autoxidation

Contact Info

Product

Resources

About