[Isolation of the intracellular lipase of Serratia marcescens]

Various methods have been tested in order to isolate endolipase from the cells of Serratia marcescens 345: cell disintegration by ultrasound and French press as well as incubation of the cellular suspension with sodium salts of bile acids. The combined effect of ultrasound and these salts on the cellular suspension of S. marcescens 345 was also studied. The highest lipolytic activity was found in the supernatant obtained upon incubation of the cells with sodium cholate at a concentration of 0.8% for 30 min.