| The component difference of fat in different parts of Xinjiang Kazak sheep was studied. The fatty acid composition and volatile component in Xinjiang Kazak sheep’s perirenal fat, omentum fat and tail fat were analyzed by gas chromatography-mass spectrometry. The results showed that 20 kinds of fatty acids were detected in tail fat, and perirenal fat and omentum fat contained 17 kinds of fatty acids respectively. The content of SFA in the tail fat was 49.09%, and the content of palmitic acid was the highest. The contents of SFA in perirenal fat and omentum fat were 64.00% and 59.44%, respectively. The content of stearic acid (C18∶?0) was the highest in SFA in perirenal fat and omentum fat. The contents of UFA in tail fat, perirenal fat and omentum fat were 50.48%, 38.95% and 35.15%, respectively. The content of oleic acid was the highest in UFA in different parts of fat. The volatile substances in mutton fat mainly included aldehydes, esters, alcohols and ketone. |
