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β‐GLUCAN AND β‐GLUCANASE IN BREWING
Author(s) -
Bourne D. T.,
Pierce John S.
Publication year - 1970
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.2050-0416.1970.tb03303.x
Subject(s) - mashing , brewing , gibberellic acid , glucanase , glucan , germination , enzyme , chemistry , food science , biochemistry , botany , biology , fermentation
The development of endo β‐glucanase during the micro‐malting of barley, with and without the addition of gibberellic acid, was compared. Results indicated that the stimulative effect of gibberellic acid on the enzyme system was of only marginal practical importance. From the assessment of the enzyme activity in a number of commercial malts it would appear that the germination time used for some malts is too short to take full advantage of the critical phase of very rapid enzyme development. The viscosity‐reducing power of β‐glucanase was demonstrated in miniature brewery mashing experiments and details of the progressive degradation of β‐glucan by the enzyme system were analysed by gel filtration methods. The β‐glucan content of a number of varieties of barley was established.