蕊木茎皮脂溶性成分及抗氧化活性研究

Liposoluble Components and Their Antioxidant Activities from the Stems and Barks of Kopsia lancibracteolata Merr.

首次运用气相色谱-质谱联用技术(GC-MS)对蕊木(Kopsia lancibracteolata Merr.)茎皮脂溶性成分进行分析,应用色谱峰面积归一化法定量分析各成分的相对百分含量,共分离鉴定出43个化合物,占其总量的80.45%。含量较高的分别是反式-2-癸烯醛(10.29%)、β-香树脂醇(10.04%)、2-十一烯醛(8.61%)、异大戟二烯醇(5.49%)、软脂酸(5.30%)等。同时采用清除DPPH自由基能力的方法对蕊木茎皮脂溶性成分进行抗氧化活性测定,结果显示一定的抗氧化活性,其IC50值为0.83 mg/mL。

The liposoluble components were extracted from Kopsia lancibracteolata Merr.from the stem bark by petroleum ether extraction.The chemical constituents of the liposoluble components were first analyzed by（GC-MS）,43 chromatographic peaks were separated and 43 compounds were identified,occupying 80.45% of total amount.The main chemical components of the liposoluble components were（E）-2-Decenal（10.29%）,β-Amyrin（10.04%）,2-Undecenal（8.61%）,Hop-22（29）-en-3-β-ol（5.49%）,Palmitic acid（5.30%）.The bioassay indicated that the liposoluble components from the stems and barks of Kopsia lancibracteolata Merr.possessed antioxidant activity,with the IC 50 value of 0.83 mg/mL.