摘要
采用超临界CO_2萃取得到沙棘籽油和沙棘全果油,并采用气相色谱和超高效液相色谱-飞行时间质谱对其脂肪酸、sn-2位脂肪酸及甘三酯组成进行测定与分析。结果表明:沙棘籽油中亚油酸、亚麻酸和油酸的含量较多,分别为38.71%、25.66%和20.68%,这3种脂肪酸也是其主要的sn-2位脂肪酸,含量分别为46.46%、25.49%和23.02%;LOL(13.65%)、OLO(12.06%)和LLn O(11.23%)是沙棘籽油的主要甘三酯类型;沙棘全果油中棕榈油酸(36.86%)、棕榈酸(27.27%)和油酸(18.00%)的含量较高,主要的sn-2位脂肪酸为棕榈油酸(45.57%)和油酸(32.06%);沙棘全果油的主要甘三酯为POPo(14.38%)、PoOPo(13.77%)和OPO(12.06%)。
Two kinds of sea buckthorn oils were individually extracted from the sea buckthorn pulp and seed by supercritical CO_2 technique. Their fatty acid,sn-2 fatty acid and triacylglycerol compositions were determined by GC and UPLC-Q-TOF/MS,respectively. The results demonstrated that linoleic acid( 38. 71%),linolenic acid( 25. 66%) and oleic acid( 20. 68%) were the major fatty acids in the seed oil. Meanwhile,their contents in sn-2 fatty acids were also dominant,reaching 46. 46%,25. 49% and 23. 02%,respectively. The main triacylglycerols in the seed oil were LOL( 13. 65%),OLO( 12. 06%) and LLn O( 11. 23%). Palmitoleic acid( 36. 86%),palmitic acid( 27. 27%) and oleic acid( 18. 00%) were the predominant fatty acids in the pulp oil. Palmitoleic acid( 45. 57%) and oleic acid( 32. 06%) were the main sn-2 fatty acids,moreover,POPo( 14. 38%),Po OPo( 13. 77%) and OPO( 12. 06%) were the predominant triacylglycerols in the pulp oil.
引文
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