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| Physicochemical properties, fatty acid composition and volatile components of Osmanthus fragrans seed oil |
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| KeyWord:Osmanthus fragrans seed oil fatty acid volatile component GC-MS |
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| Abstract: |
| With the mature seed of Osmanthus fragrans as raw material, the seed oil was obtained by ultrasound-assisted extraction. The physicochemical properties of O. fragrans seed oil were determined and the fatty acid composition and volatile components of O. fragrans seed oil were analyzed by GC-MS. The results showed that the iodine value, peroxide value, saponification value, acid value and relative density (20?℃) of O. fragrans seed oil were 124.38 gI/100 g, 1.16 mmol/kg, 190.28 mgKOH/g, 1.24 mgKOH/g and 0.931 3, respectively. Twelve fatty acids were identified form O. fragrans seed oil which occupied 99.39% of total fatty acids and the major fatty acids were oleic acid (45.16%), linoleic acid (36.75%), palmitic acid (11.46%) and stearic acid (4.68%). The content of unsaturated fatty acids was up to 82.38%, and the ratio of unsaturated fatty acids to saturated fatty acids was 4.84. Ten volatile components were identified from O. fragrans seed oil which occupied 88.85% of total volatile components, and alkanes and alcohols were the major components. There were two kinds of functional components α-tocopherol(1.04%) and β-sitosterol(14.30%) in volatile components. Therefore, O. fragrans seed oil could be developed and utilized as functional vegetable oil. |
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