Abstract
Chitinase-producing microbes have attracted attention as one of the potential agents for control of phytopathogenic fungi and insect pests. The fungus that potentially produces chitinase is Beauveria bassiana. This study aims to determine the growth curve and chitinase activities of B. bassiana isolated from Helopeltis antonii insects after application. Method of measuring growth curve was done by dry cell period method, while for measurement of enzyme activity done by measuring absorbance at spectrophotometer. The results showed optimum growth time of B. bassiana with the highest cell count of 0.031 g on day 4 which was log phase, while the highest enzyme activity was 0,585 U / mL on the 4th day for 7 days incubation. Based on these results when correlated growth with enzyme production, chitinase enzyme products are produced in log phase and categorized as primary metabolism.
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