The N-terminal amino acid residues of gelatin. 4. Chain weight and rigidity relationship in fractionated gelatins

Supplements of (+)-12-methyltetradecanoic acid and (+ )-14-methylhexadecanoic acid to a fat-free diet did not materially alter the fatty acid composition of the depot fats of Wistar rats.2. The weights of (+)-12-methyltetradecanoic acid and ( + )-14-methylhexadecanoic acid deposited in the carcass under identical conditions of supple- mentation were proportional to the amounts of supplement given, and the degree ofinterconversion of these acids was similar, thus affording an explanation for their occurrence in the same proportions in animal fats.3. The metabolic turnover of (+ )-antei8o-acids was shown to be considerably slower than that of normal fatty acids.