Fatty Acids and Amino Acids Content of Walnut Kernels in Guizhou

The composition and content of fatty acids and amino acids content of walnut kernels of 20 quality walnut plants from 3 villages of Hezhang county were analyzed and determined systematically to know the characteristics and nutritional value.The results showed that the total unsaturated fatty acids content was 74.63 %-91.45 % and the average unsaturated fatty acids content was 88.47 %,the polyunsaturated fatty acids accounted for 45 %-75 %,the ratio of n-6 PUFA/n-3 PUFA and SFA∶MFA∶PUFA was 7.20-15.42∶1 and 1∶0.57-5.21∶2.39-9.59,respectively.The fatty acids with lower SFA and high PUFA content in walnut kernels belonged to linolenic acid type.The walnut kernel was rich in 17 amino acids.The Arg,Glu and Asp content was high and there was 9 kinds of human essential amino acids.The ratio of essential amino acids/total amino acids was 49.04 %-55.85 % and the average ratio of essential amino acids/total amino acids was 52.24 %,which demonstrated the protein with balance amino acids content in walnut kernels was a quality protein.