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Inhibition of digestive enzymes by condensed tannins from green and ripe carobs

Inhibition of digestive enzymes by condensed tannins from green and ripe carobs The degree of inhibition of trypsin, β‐amylase and lipase by condensed carob tannins was determined, and compared with that caused by a glucoside of m‐digallic acid. the carob tannins were strongly inhibitory to all the enzymes assayed; β‐amylase was the most sensitive and lipase the least sensitive. Only in the case of lipase was the hydrolysable tannin a more active inhibitor than the condensed carob tannins. Polyvinyl pyrrolidone reactivated trypsin and lipsse, but not β‐amylase. The inhibitors were found to change the maximum reaction velocities of crystalline trypsin and β‐amylase, indicating non‐competitive reaction kinetics. http://www.deepdyve.com/assets/images/DeepDyve-Logo-lg.png Journal of the Science of Food and Agriculture Wiley

Inhibition of digestive enzymes by condensed tannins from green and ripe carobs

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References (17)

Publisher
Wiley
Copyright
Copyright © 1969 John Wiley & Sons, Ltd
ISSN
0022-5142
eISSN
1097-0010
DOI
10.1002/jsfa.2740200402
Publisher site
See Article on Publisher Site

Abstract

The degree of inhibition of trypsin, β‐amylase and lipase by condensed carob tannins was determined, and compared with that caused by a glucoside of m‐digallic acid. the carob tannins were strongly inhibitory to all the enzymes assayed; β‐amylase was the most sensitive and lipase the least sensitive. Only in the case of lipase was the hydrolysable tannin a more active inhibitor than the condensed carob tannins. Polyvinyl pyrrolidone reactivated trypsin and lipsse, but not β‐amylase. The inhibitors were found to change the maximum reaction velocities of crystalline trypsin and β‐amylase, indicating non‐competitive reaction kinetics.

Journal

Journal of the Science of Food and AgricultureWiley

Published: Apr 1, 1969

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