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A ROLE FOR CARBOXYPEPTIDASE IN THE SOLUBILIZATION OF BARLEY β‐GLUCAN
Author(s) -
Bamforth C. W.,
Martin H. L.,
Wainwright T.
Publication year - 1979
Publication title -
journal of the institute of brewing
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.523
H-Index - 51
eISSN - 2050-0416
pISSN - 0046-9750
DOI - 10.1002/j.2050-0416.1979.tb03937.x
Subject(s) - carboxypeptidase , mashing , endosperm , biochemistry , enzyme , chemistry , glucan , isoelectric point , solubilization , isoelectric focusing , chromatography , food science
An enzyme is described which catalyzes the release of soluble β‐glucan from insoluble barley endosperm cell walls. This enzyme increases in activity throughout malting. It has been partially purified and found to behave in the same way as an acidic carboxypeptidase on isoelectric focusing and in its sensitivity to inhibitors and activators and to heating. The importance of the β‐glucan solubilizing enzyme in malting and mashing is discussed. An improved method for β‐glucan determination is described.