Abstract
Attempts were made to improve the growth of endophytic fungus Acremonium sp. and its raw sago starch degrading enzyme (RSSDE) production using different nitrogen and carbon sources at varying pH values and temperatures. It was observed that growth and enzyme activity levels were highest with peptone and sodium nitrate as the nitrogen sources and raw sago starch as the carbon source of which the optimum concentrations were 0.5 g/l, 3 g/l, and 20 g/l, respectively. Cell growth and RSSDE production reached their optimum at pH 5.0 and incubation temperature of 30 degrees C. Under these conditions, the enzyme production was significantly increased by 19- to 22-folds compared to the activity obtained in the original basal medium.
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