[Thermal inactivation and storage behavior of technologically important enzymes. II. Lipase from Geotrichum candidum and lipoxygenase from soybeans].

The thermal inactivation of lipase out of Geotrichum candidum and of lipoxigenase out of soybeans was investigated in phosphate buffer solution. Comparable to peroxidase, a sharp bend was observed in the inactivation curves of both enzymes. The z-value of 19 degrees C for lipase out of Geotrichum candidum was higher than the values indicated in the pertinent literature for pancreas lipase and milk lipase. The z-value for soy lipoxigenase was found to be 9.8 degrees C.