澳洲坚果不同种质果仁粗脂肪及脂肪酸成分的研究_杨为海 . Crude Fat and Fatty Acid Composition of Various Macadamia Germplasms Kernel

Abstract

The contents of crude fat and eight main fatty acids in kernels of 28 macadamia germplasm resources were measured and investigated.The results showed that the average contents of crude fat,oleic acid,palmitoleic acid,palmitic acid,stearic acid,arachidic acid,eicosenoic acid,myristic acid and heneicosanoic acid in macadamia germplasms was 77.61%,65.51%,12.57%,9.44%,4.32%,3.00%,2.41%,0.51% and 0.32%,respectively.The crude fat content of these germplasms was higher with little variation,and no distinct correlation between crude fat content and various fatty acids content.Large variation were among the contents of fatty acids with variation coefficient of 5.08%～40.10%.The variation range in the content of myristic acid was the largest,while that in oleic acid was the smallest.There were significant positive or negative correlations between the eight main fatty acids.Based on the hierarchical cluster analysis,28 macadamia germplasm resources were divided into four groups with different characteristics of the fatty acid content.