내열성 extracellular lipase 생산을 위한 Geobacillus kaustophilus DSM 7263의 배양조건

Abstract

A producer of thermophilic extracellular lipase, Geobacillus kaustophilus DSM 7263, was selected from various microorganisms of the Geobacillus genus. We investigated optimum conditions for mass production of G. kaustophilus lipase. Among the different natural oil media, olive oil was optimal for enzyme production. The maximum amount of enzyme production was obtained when G. kaustophilus was grown in a medium containing 0.5% olive oil as a carbon source. The pH and temperature for optimal growth were pH 8.0 and , respectively, while the optimum pH and temperature for lipase production were pH 6.0 and , respectively. In the presence of and , lipase production was dramatically enhanced by 247% and 157%, respectively, whereas enzyme production was inhibited by , , and . The addition of 0.1% (v/v) triton X-100 increased lipase production and cell growth when compared to the negative control.