1968 Volume 32 Issue 11 Pages 1311-1317
Cell-free extracts were prepared by Hughes' type disintegrator from cells of Lactobacillus casei, L. plantarum, L. helveticus and Streptococcus diacetilactis. Lipolytic activities of these extracts were measured by titration of total acids liberated from tributyrin and butterfat emulsions at given temperature. More acids were liberated from tributyrin than from butterfat, olive oil and composite butter. Lipolytic activities of all extracts for tributyrin were approximately the same at reaction temperature of 30°C, 37°C and 45°C, and were higher at pH 6 to 8. Free fatty acids of C10, C12, C14, C16 and C18 liberated by extracts of L. casei and L. plantarum, were tentatively identified on gas-liquid chromatograms.
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