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• 成分分析 •    下一篇

西 藏不同种源光核桃仁脂肪酸组成分析

王伟,魏丽萍   

  1. 西藏大学农牧学院资源与环境学院
  • 收稿日期:2016-05-07 修回日期:2016-08-31 出版日期:2016-12-25 发布日期:2016-11-18
  • 通讯作者: 魏丽萍 E-mail:34984262@qq.com
  • 基金资助:
    非生物胁迫对西藏光核桃遗传稳定性的影响

Analysis of Fatty Acid Composition in Prunus mira Kernel from Different Tibet Areas

wei wang,   

  • Received:2016-05-07 Revised:2016-08-31 Online:2016-12-25 Published:2016-11-18

摘要: 采用溶剂回流法及气相色谱法,分析全西藏范围内9 个种源的光核桃仁出油率、油脂种类及含量特征。结果表明,9 个种源的光核桃仁出油率差异显著,均值为44.96%;光核桃油中不饱和脂肪酸含量极高,均值为90.901%,主要由油酸和亚油酸组成,油酸的变化范围为45.28% ~-71.36%,最高值为芒康县的光核桃,亚油酸的变化范围为18.01%~-44.34%,最高值为亚东县光核桃;饱和脂肪酸的均值为9.099%,主要成分为棕榈酸和硬脂酸,棕榈酸的变化范围为5.829%~-7.354%,最高值为亚东县光核桃;硬脂酸的变化范围为1.600%-3.034%,最高值为察隅县光核桃;基于11 种脂肪酸含量特征的聚类分析表明,米林县、左贡县、波密县、八宿县光核桃仁油脂含量特征相近,芒康县则与其他种源光核桃油脂特征差异较大。

关键词: 关键词:西藏, 光核桃仁, 出油率, 脂肪酸组成

Abstract: As one of the most widely distributed wild fruit tree resources in Tibet, to understand oil extraction rate and fatty acid composition of Prunus mira kernel oils from different resources regions in Tibet would provide reference for further utilization of Prunus mira. Solvent reflux method and meteorological chromatography were used to analysis Prunus mira kernel oil yield and oil content types and characteristics from Tibet nine sources county. Results showed that Prunus mira kernel oil yield from different sources in Tibet were significantly different, mean value was 44.96%; Prunus mira kernel oil was rich in unsaturated fatty acids, mean value was 90.901%, composed mainly of oleic acid and linoleic acid. The range of variation of oleic acid was 45.28% ~-71.36%, the highest value was in Mangkang county, linoleic acid content were range from 18.01% to 44.34%, the highest value was in Yadong County; Saturated fatty acids mean value was 9.099%, mainly composed of palmitic acid and stearic acid, palmitic acid range from 5.829% to 7.354%, the highest value was in Yadong County; Stearic range of 1.600%-3.034%, the highest was in Chayu County; Clustering analysis based on 11 kinds of fatty acids content indicate that Prunus mira kernel oils features in Minling, Zuogong County, Bomi County, Basu County were similar to the other, Prunus mira kernel oils in Mangkang was quite different with others.

Key words: Key word:Tibet, Prunus mira kernel, oil extraction rate, fatty acid composition

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