GC Analysis of the Fatty Acid Composition of Yak Kidney

Universität Freiburg Institut für Biochemie und Molekularbiologie Stefan-Meier-Strasse 17 79104 Freiburg Germany
Chromatographia (Impact Factor: 1.41). 03/2009; 69(1):139-143. DOI: 10.1365/s10337-008-0845-6


To obtain valuable information for development of potential commercial products from yak kidney, which is usually treated
as waste, the fatty acid composition of kidneys from yak reared in Gansu province, China, was investigated by gas chromatography.
Fifteen different fatty acids were identified. The major fatty acids are oleic acid (33.3%), stearic acid (20.2%), and palmitic
acid (18.4%). More interestingly, several important and essential fatty acids were also identified, including conjugated linoleic
acid (2.94%), omega-3 fatty acids, for example docosahexaenoic acid (1.47%), eicosapentaenoic acid (1.11%) and alpha linolenic
acid (0.37%), and omega-6 fatty acids, for example arachidonic acid (2.86%) and linoleic acid (1.98%). The results show that
the fatty acid composition of yak kidney is of reasonable value and is suitable for further development of possible commercial
products. This is the first report of the fatty acid profile of yak kidney.

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