|
Abstract: The study here presented is chiefly concerned with the study of the ability of edible and inedible woord rotters in decomposting wood tissue. Considering the components of wood tissue, hemicellulolytic, cellulolytic, and lignolytic enzymes should be produced by wood rotters during their growth in wood tissue. Of these components, hemicellulose, such as xylan, is the most readily utilizable substrate and xylanase activity does not characterize aptly the wood decomposting ability of rotters. A marked characteristic of wood rotters is exhibited in their cellulase activity, so that the activity will serve as a standard of comparison between edible and inedible wood rotters. In our experience, Trichoderma viride, a saprophytic fungus producing the strongest cellulase preparations in Japan and the United States, was unable to degrade sawdust, rice straw, and bagasse without chemical delignification. Any oxidizing enzymes were not produced by the fiungus excepting catalase. According to the view now commonly accepted, white rotters capable of decomposing lignin produce oxidizing enzymes. On the basis of these facts it has been inferred that oxidizing enzymes play an important rome in the degradation of lignin. At the same time, the degradation of wood was also studied using these wood rotters. Particular attention will be devoted to pointing out the roles of cellulase and oxidizing enzymes in the pattern of enzymes involved in wood degradation.
Full text download: ISMS subscribers
ISHS members & pay-per-view
Translate:
   |