초록
<P>Lipase is a kind of important hydrolase. It was widely used in the fields of food, leather, detergent and pharmaceutical. The production of lipase from <I>Arthrobacter sp. </I>SD5 was studied in the present paper. The medium composition and culture condition were optimized in order to improve lipase production. The results showed the best optimum conditions were on the following: culture temperature (40°C); initial pH value (8.0); liquid volume (20%); carbon source (olive oil, 2.5%); nitrogen source (peptone, 1.0%); biosurfactant (Tween-80, 0.2%).</P>