Use of Liver Extract in Place of Yeast in Low Fat Diets. ∗

Abstract

Summary

When our results are compared with those of other workers quoted above, it is evident that the use of liver extract instead of the usual yeast in studies on low fat diets results in an earlier and more acute deficiency and hence a greater growth response when fat is given. Possibly the liver extract is lower than ether-extracted yeast in the essential fatty acids. This fact may be useful in working out better methods for the assay of at least some of the essential fatty acids in fats. Furthermore, it is necessary to have fat in the diet to obtain maximum growth responses to the liver extract concentrates of the vitamin B complex.