1974 Volume 38 Issue 1 Pages 97-101
A crude inhibitor for pancreatic lipase was extracted from soybean seeds. The lipase activity decreased curvilinearly with an increase in inhibitor concentration. At a low inhibitor concentration, enhanced inhibition was observed by the co-existence of protein such as bovine serum albumin in the reaction mixture. The lipase activity was inhibited immediately after the addition of inhibitor which did not cause the significant destraction of substrate emulsion. The lipase activities of Aspergillus niger, Rhizopus delemar and castor bean seeds were also inhibited. The inhibition was observed when various oil substrates such as soybean oil, linseed oil, olive oil emulsions and Ediol were used, and the extent of inhibition varied among them. Column chromatography of inhibitor on Sephadex G-100 showed that the molecular weight of a main peak of inhibitor was estimated as about 80, 000.
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