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Literature DB >> 24310393

Stimulatory effects of tannins and cholic acid on tryptic hydrolysis of proteins: Ecological implications.

Abstract

The biochemical basis for considering tannins as digestion inhibitors has been reexamined. Both stimulatory and inhibitory effects of tannins on tryptic hydrolysis are reported. We show how stimulation may result from tannin-induced structural changes in the substrate protein, effectively denaturing it. The surfactant and bile constituent cholic acid also produced similar stimulatory effects. These results have considerable implications for normal digestive physiology as well as for the impact of tannins on argicultural and natural herbivore populations.

Entities: Chemical

Year: 1985 PMID： 24310393 DOI： 10.1007/BF01024119

Source DB: PubMed Journal: J Chem Ecol ISSN： 0098-0331 Impact factor: 2.626

10 in total

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Authors: H MORAWETZ; H SAGE
Journal: Arch Biochem Biophys Date: 1955-05 Impact factor: 4.013

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Authors: S MOORE; W H STEIN
Journal: J Biol Chem Date: 1954-12 Impact factor: 5.157

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Authors: P C SPENSLEY; H J ROGERS
Journal: Nature Date: 1954-06-19 Impact factor: 49.962

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Authors: M M Martin; D C Rockholm; J S Martin
Journal: J Chem Ecol Date: 1985-04 Impact factor: 2.626

5. Surfactants: their role in preventing the precipitation of proteins by tannins in insect guts.

Authors: Michael M Martin; Joan S Martin
Journal: Oecologia Date: 1984-03 Impact factor: 3.225

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Authors: P Johnson; T L Whateley
Journal: Biochim Biophys Acta Date: 1972-07-13

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Authors: S Moore
Journal: J Biol Chem Date: 1968-12-10 Impact factor: 5.157

8. On the concentration of bile acids in the human intestine during absorption. Bile acids and sterioids 74.

Authors: J SJOVALL
Journal: Acta Physiol Scand Date: 1959-08-31

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Authors: A E Hagerman; L G Butler
Journal: J Biol Chem Date: 1981-05-10 Impact factor: 5.157

10. Plant phenols utilized as nutrients by a phytophagous insect.

Authors: E A Bernays; S Woodhead
Journal: Science Date: 1982-04-09 Impact factor: 47.728

10 in total

15 in total

1. Induced defensive response of myrtle oak to foliar insect herbivory in ambient and elevated CO2.

Authors: Anthony M Rossi; Peter Stiling; Daniel C Moon; Maria V Cattell; Bert G Drake
Journal: J Chem Ecol Date: 2004-06 Impact factor: 2.626

2. Light-induced variation in phenolic levels in foliage of rain-forest plants : I. Chemical changes.

Authors: S Mole; J A Ross; P G Waterman
Journal: J Chem Ecol Date: 1988-01 Impact factor: 2.626

3. Antinutritional effects and ecological significance of dietary condensed tannins may not be due to binding and inhibiting digestive enzymes.

Authors: H J Blytt; T K Guscar; L G Butler
Journal: J Chem Ecol Date: 1988-06 Impact factor: 2.626

4. Light-induced variation in phenolic levels in foliage of rain-forest plants : II. Potential significance to herbivores.

Authors: S Mole; P G Waterman
Journal: J Chem Ecol Date: 1988-01 Impact factor: 2.626

5. Reassessment of the role of gut alkalinity and detergency in insect herbivory.

Authors: G W Felton; S S Duffey
Journal: J Chem Ecol Date: 1991-09 Impact factor: 2.626

6. Failure of tannic acid to inhibit digestion or reduce digestibility of plant protein in gut fluids of insect herbivores : Implications for theories of plant defense.

Authors: J S Martin; M M Martin; E A Bernays
Journal: J Chem Ecol Date: 1987-03 Impact factor: 2.626

10. A critical analysis of techniques for measuring tannins in ecological studies : II. Techniques for biochemically defining tannins.

Authors: S Mole; P G Waterman
Journal: Oecologia Date: 1987-04 Impact factor: 3.225