On the Growth-Promoting Factor for Rats Present in Summer Butter
- 1 March 1947
- journal article
- research article
- Published by Elsevier in Journal of Nutrition
- Vol. 33 (3), 339-358
- https://doi.org/10.1093/jn/33.3.339
Abstract
Earlier experiments, in which we found a better growth in young albino rats on summer butterfat than on vegetable oils, were confirmed. The growth-promoting action was mainly present in the saponifiable fraction, that is, in the fatty acids. On fractionating the methyl esters of the acids of butterfat by distillation in vacuo, the activity was found in the C18-fraction. On fractionating first with lead acetate and then with mercuric acetate we obtained a fraction chiefly containing vaccenic acid. This fraction possessed distinct growth-promoting qualities. It seems highly probable therefore that vaccenic acid is a growth-promoting factor present in summer butter.Keywords
This publication has 4 references indexed in Scilit:
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- The Comparative Nutritive Value of Butter Fat and Certain Vegetable OilsJournal of Dairy Science, 1940
- The Precipitation of Solid Fatty Acids with Lead Acetate in Alcoholic Solution.Journal of Industrial & Engineering Chemistry, 1921