Abstract
Micrococcus roseus (G12) isolated from higher termite Odontotermes obesus gut exhibited cellulose digesting properties. A lignocellulosic substrate, rice husk induced endoglucanase, β-glucosidase, β-xylanase and β-xylosidase production. Besides rice husk, CMC also induced endoglucanase production. β-Glucosidase activity was quite pronounced when rice husk was supplemented with CMC or cellobiose. Both β-xylanase and β-xylosidase activities could be induced by xylan as well as xylobiose, whereas CMC induced partial activity. Endoglucanase and β-xylanase enzymes were secreted into the culture medium, whereas β-glucosidase and β-xylosidase activities were intracellular in nature. Enzyme production was subject to end product inhibition. The extracellular enzyme(s) possessed the potential to saccharify rice husk, xylan and CMC to reducing sugars.
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