BIOACTIVE LIPIDS IN MILK AND SOME DAIRY PRODUCTS

Abstract

The aim of this work was to monitor some of the bioactive lipids content in Egyptian buffalo and goat milk as affected by species, seasonal variations and some technological dairy steps. The studied-bioactive lipids are butyric acid, conjugated linoleic acid, odd and branched chain fatty acids, phospholipids, and trans fatty acids. Gross chemical composition and conjugated dienes and trienes acids of milk samples were also previously evaluated. Regarding to the fatty acids profiles as well as total polar lipids and phospholipids classes of the types of milk samples as well as buffalo milk fatty products and their by-products were estimated by modern techniques such as GC-MS and 31P-NMR apparatus. The results indicated that milk samples in winter season contained higher values of gross composition for both buffalo and goat milk than summer season, where the green fodder is in winter