Journal of Chemical Ecology

, Volume 26, Issue 5, pp 1151–1165

Inhibition of β-Glucosidase and Esterase by Tannins from Betula, Salix, and Pinus Species

  • Marja-Riitta Juntheikki
  • Riitta Julkunen-Tiitto
Article

DOI: 10.1023/A:1005427809812

Cite this article as:
Juntheikki, MR. & Julkunen-Tiitto, R. J Chem Ecol (2000) 26: 1151. doi:10.1023/A:1005427809812

Abstract

The reaction of tannin fractions isolated from the bark of Betula, Salix, and Pinus species with two enzymes, β-glucosidase and esterase, was investigated. The influence of precipitation to the hydrolytic capacity of β-glucosidase also was studied. All tannins studied precipitated β-glucosidase and esterase, and moderate differences in the precipitating capacities of the tannins were observed. Interestingly, complex formation between β-glucosidase and tannin did not markedly affect the activity of the enzyme. Therefore, complex formation during the insect/herbivore feeding does not necessarily change the defense activity of phenolic glycosides or decrease activity of digestive enzymes.

Betula Salix Pinus condensed tannins β-glucosidase esterase enzyme inhibition protein precipitation defense activity 

Copyright information

© Plenum Publishing Corporation 2000

Authors and Affiliations

  • Marja-Riitta Juntheikki
    • 1
  • Riitta Julkunen-Tiitto
    • 1
  1. 1.Department of BiologyUniversity of JoensuuJoensuuFinland

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