Analysis of Oil Content and Fatty Acid Fractions of Six Acer truncatum Seed Kernels

CHENG Tiantian; XUAN Jin; CHU Min; REN Hongjian; SUN Zhongkui; YAN Yu; DU Hui; XIE Xueyang

doi:10.3969/j.issn.1002-2724.2024.05.011

Abstract：In order to screen and evaluate the germplasm resources of Acer truncatum for oil use in Shandong,this study took the seeds of six clones of Acer truncatum in Tai'an City as the test materials,and used pulsed nuclear magnetic resonance(NMR)instrument and gas chromatography to quantitatively determine the oil content of the seeds and fatty acid fractions of the seeds of Acer truncatum.The results showed that the oil content of Acer truncatum seed kernels varied somewhat,with an average oil content of 51.7％,the highest oil content being No.6(53.48％)and the lowest being No.4(49.84％);The saturated fatty acid content was ranked as follows:palmitic acid(4.35％)＞stearic acid(2.30％)＞behenic acid(0.75％);the unsaturated fatty acid content was ranked as follows:linoleic acid(34.07％)＞oleic acid(24.87％)＞erucic acid(16.18％)＞arachidonic acid(8.08％)＞neuronic acid(6.04％)＞α-linolenic acid(1.71％)＞γ-linolenic acid(0.71％).Among them,the content of γ-linolenic acid ranged from 0.36％(No.3)to 1.33％(No.5),with a large coefficient of variation(51.08％)and the oil content of the seeds ranged from 49.84％(No.4)to 53.48％(No.6),with the lowest coefficient of variation(2.84％);On the whole,the degree of variation of both saturated fatty acids and unsaturated fatty acids was not large,with the coefficients of variation being 4.28％and 0.38％,respectively.Correlation analysis showed that there was no significant correlation between oil content and fatty acid content.Linoleic acid and oleic acid,γ-linolenic acid and palmitic acid were all significantly negatively correlated;α-linolenic acid and stearic acid were in a highly significant positive correlation;Erucic acid and behenic acid showed significant positive correlation,and there was no significant correlation between other fatty acid contents.