1963 年 27 巻 6 号 p. 405-408
By using the purified phospholipase A and B of Sclerotinia Libertiana Fcl., enzymic degradation of soy-lecithin was investigated. From the paperchromatography experiments, it was concluded that the phospholipase A specifically hydrolyzes the ester linkage of unsaturated fatty acid of soy-lecithin whereas the phospholipase B hydrolyzes the linkage of saturated acid of soy-lysolecithin. Phospholipase B also could hydrolyze the two fatty acids from the soy-lecithin, however, the hydrolysis rate was rather inhibited by combination with the phospholipase A. Moreover, the phospholipase B activity on soy-lecithin and soy-lysolecithin was found to be increased by the presence of soy-lecithin and soy-lysolecithin in the reaction mixture, and to be inhibited by the addition of Tween 20.
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