[Comparative study of the properties of lipase of microbial origin]

A comparative study of properties of lipases of microbial origin has shown that the pH optimum of the enzymes from Geotrichum asteroides and Penicillium sp. is at pH 7.5 and 5.0, respectively. Lipase from Geotrichum asteroides appears more resistant to high temperatures and pH changes than the enzyme from Penicillium sp. Both enzymes split selectively vegetable oils, especially cotton and sunflower oils. Na cholate and deoxycholate at a concentration of 0.05-0.4% act as hydrolysis activators, particularly with respect to Geotrichum lipase. Na dehydrocholate does not show this effect.