Identification of n-6 Monounsaturated Fatty Acids in Acer Seed Oils

文献类型: 外文期刊

第一作者: Sun, Jin-Yue

作者: Sun, Jin-Yue;Wang, Xin-Kun;Smith, Mark A.

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关键词: Acer; Seed oil; sn-2 MAG; Very-long-chain fatty acids; n-6 monounsaturated fatty acids; Gamma-linolenic acid; Nervonic acid

期刊名称:JOURNAL OF THE AMERICAN OIL CHEMISTS SOCIETY ( 影响因子:1.849; 五年影响因子:2.299 )

ISSN: 0003-021X

年卷期: 2018 年 95 卷 1 期

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收录情况: SCI

摘要: Seed oils from Acer species are a potential source of the nutraceutical fatty acids, nervonic acid (cis-15-tetracosenoic acid, NA), and -linolenic acid (cis-6,9,12-octadecatrienoic acid, GLA). To further characterize the genus, seed fatty acid content and composition were determined for 20 species of Acer. Fatty acid content ranged from 8.2% for Acer macrophyllum to over 36% for A. mono and A. negundo. The presence of very-long-chain fatty acids (VLCFA), with chain length of 20-carbons or greater, and GLA were characteristic features of the seed oils. In all species, erucic acid (cis-13-docosenoic acid, EA) was the predominant VLCFA with the highest level of NA being only 8.6% in A. olivianum. Regioselective lipase digestion demonstrated that VLCFA are largely absent from the sn-2 position of seed triacylglycerol, whereas GLA is primarily located at this position. Five Acer species contained low levels (<2%) of cis-12-octadecenoic acid and cis-14-eicosenoic acid, uncommon n-6 fatty acids not previously reported from Acer.

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