Abstract
Trichoderma viride can utilize crude cell wall preparations from barley starchy endosperm as sole source of carbon and energy. In the process beta-(1-->3)(1-->4)-glucan and arabinoxylan are released. The onset of release of the latter preceded that of glucan, consistent with arabinoxylan being encountered and utilized first. The release of several enzymes was observed during growth of Trichoderma on this substrate: endo-beta-(1-->3)(1-->4)-glucanase, endo-beta-(1-->4)-glucanase, endo-xylanase, arabinofuranosidase, esterase, carboxypeptidase, and "beta-glucan solubilase". It is inferred that each of these activities is necessary for the digestion of this substrate.
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