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| 火麻油总脂肪酸及sn-2位脂肪酸组成分析 |
| Determination of compositions of total fatty acids and sn-2 fatty acids in hemp oil |
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| DOI： |
| 中文关键词: 火麻油 脂肪酸 sn-2位脂肪酸 气相色谱 |
| 英文关键词:hemp oil fatty acid sn-2 fatty acid gas chromatography |
| 基金项目:广州市卫生健康科技项目（20211A011063）；广西高校中青年教师基础能力提升项目（2017KY1382）；广西大学生创新创业训练计划项目（201913639071,201813639070）；广西科技大学鹿山学院科研创新团队项目（2018LSTD02） |
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| 中文摘要: |
| 采用气相色谱法测定火麻油中总脂肪酸和sn-2位脂肪酸的组成和含量，并与其他9种常见植物油进行对比，旨在为火麻油的营养价值研究提供基础数据。结果表明，3种不同品牌火麻油主要由软脂酸（C16∶ 0）、硬脂酸（C18∶ 0）、油酸（C18∶ 1n9c）、亚油酸（C18∶ 2n6c）、α-亚麻酸（C18∶ 3n3）组成，其中多不饱和脂肪酸含量为70.57%~78.73%，sn-2位多不饱和脂肪酸含量为77.61%~83.74%，说明以亚油酸和α-亚麻酸为主的多不饱和脂肪酸更易连接在甘三酯结构的sn-2位上。另外，对比其他9种常见植物油，火麻油总脂肪酸和sn-2位脂肪酸中油酸含量均最低，亚油酸和亚麻酸含量较高；多不饱和脂肪酸含量均最高，分别为77.90%和83.74%；n-6系脂肪酸与n-3系脂肪酸比例分别为3.7∶ 1和4.2∶ 1。研究结果表明，火麻油是一种不饱和脂肪酸含量较高且易于被人体吸收代谢的植物油。 |
| 英文摘要: |
| The compositions and contents of total fatty acids and sn-2 fatty acids in hemp oil were determined and analyzed by gas chromatography, and they were compared with other nine kinds of vegetable oils so as to provide useful data for the research of nutritional value of hemp oil. The results showed that three different brands of hemp oils were mainly composed of palmitic acid (C16∶ 0), stearic acid (C18∶ 0), oleic acid (C18∶ 1n9c), linoleic acid (C18∶ 2n6c) and α-linolenic acid (C18∶ 3n3). The content of unsaturated fatty acids was 70.57%-78.73%, and the content of sn-2 polyunsaturated fatty acids was 77.61%-83.74%, which indicated that the polyunsaturated fatty acids mainly composed of linoleic acid and α - linolenic acid were easily linked to the sn-2 position of the triglyceride structure. In addition, compared with other nine kinds of common vegetable oils, the oleic acid content in total fatty acids and sn-2 fatty acids of hemp oil was the lowest, while the contents of linoleic acid and linolenic acid were higher. The contents of polyunsaturated fatty acids in total fatty acids and sn-2 fatty acids of hemp oil were the highest, which were 77.90% and 83.74% respectively, and the ratios of n-6 fatty acid to n-3 fatty acid were 3.7∶ 1 and 4.2∶ 1 respectively. Hemp oil was a kind of edible oil with high content of unsaturated fatty acids and was easy to be absorbed and metabolized by human body. |
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