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| Oil content and fatty acid composition of hemp seed |
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| KeyWord:hemp seed oil content fatty acid correlation |
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| Abstract: |
| In order to investigate the development and utilization value of hemp seed oil, the seed oil content, fatty acid composition and their correlation were studied and analyzed by Soxhlet extraction method and gas phase chromatography. The results showed that oil content of hemp seed was higher,up to 36.10%，of which more than 34.20% of the species reached five. Hemp seed oil was mainly composed of palmitic acid, stearic acid, oleic acid, linoleic acid,γ-linolenic acid and α-linolenic acid. The content of unsaturated fatty acid was 86.89%-98.79%, and its average value was 89.50%. The content of polyunsaturated fatty acid was high, and its average value was 77.05%, of which linoleic acid content more than 59% had four varieties. The average value of linolenic acid content was 19.90%, of which α-linolenic acid content more than 20% of the species reached five. Correlation analysis showed that the oil content of hemp seed was negatively correlated with linoleic acid and α-linolenic acid, positively correlated with oleic acid and γ-linolenic acid, and the relationship between α-linolenic acid and oil content reached significant level. Comprehensive analysis showed that hemp seed oil had high oil content and rich unsaturated fatty acid, and its linolenic acid content was higher than that of many edible vegetable oils, which had good development and utilization prospects. The γ-linolenic acid of Yunma No.4 and the linoleic acid and α-linolenic acid of Yunma No.6 were abundant, significantly higher than those of other cultivars, showing that these two species had important application value for developing corresponding high fatty acid health food, special vegetable oil and quality breeding research. |
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