Summary
Data are presented from numerous analyses of commercial lecithins for the comparison of values obtained from the determination of acetone insolubles by a direct weighing method against those by the A.O.C.S. Tentative Method Ja 4–46. Discrepancies introduced into these methods by the use of petroleum ether as a solventand those due to the solubility of acetone insoluble compounds in the acetone extract and wash solution are evaluated. A proposal is made for the consideration of a direct weighing procedure for the acetone insolubles content of commercial lecithins whereby petroleum ether is eliminated, the acetone extract solution saturated with pure phosphatides before use, and the insoluble residue dried and weighed.
scite is a Brooklyn-based organization that helps researchers better discover and understand research articles through Smart Citations–citations that display the context of the citation and describe whether the article provides supporting or contrasting evidence. scite is used by students and researchers from around the world and is funded in part by the National Science Foundation and the National Institute on Drug Abuse of the National Institutes of Health.