Lipase production by Rhizopus oryzae growing on different carbon and nitrogen sources

;Nitrogen and carbon sources influencing the growth and production of Lipas e by Rhizopus oryzae were studied. High yields of enzyme activity were obta ined when proteose peptone was the nitrogen source in media with olive oil (MWO) and without olive oil (MWHO). Carbon sources increased lipase activit y in MWHO but decreased it slightly in the presence of oil. Lipase activity was significantly (P<0.5) higher in MWO than in MWHO. Biomass concentratio n was also higher in the presence of oil. Industrial by-products bran and w hey have been used as efficient media for the production of lipase by R ory zae. (C) 1999 Society of Chemical Industry.