The Difference of Fatty Acid Composition from Yak and Yellow Cattle

摘要

In order to evaluate the nutrition value of the yak meat and to compare fatty acid of kidney fat from yak and yellow cattle, the fatty acid composition of the kidney fat from yak and yellow cattle both grown in Gansu province, China was investigated by use of gas chromatographic method. Compared with yellow cattle, the monounsaturated fatty acid and polyunsaturated fatty acid of yak were higher evidently except SFA. Similarly, the ratio of UFA/SFA, which were only 0.98 and 0.67, were not exceeding 2. Yak was higher PUFA/MUFA ratio than yellow cattle at 0.11. More importantly, several important fatty acids have also been demonstrated including conjugated linoleic acid (CLA), omega-3 fatty acids as well as omega-6 fatty acids in fat of yak. The results show yak fat has a more reasonable value of fatty acids composition and is proper for further research of possible commercial products.