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| Determination of compositions of total fatty acids and sn-2 fatty acids in hemp oil |
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| DOI： |
| KeyWord:hemp oil fatty acid sn-2 fatty acid gas chromatography |
| FundProject: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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| Abstract: |
| 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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