固相微萃取-气相色谱-质谱技术应用于菊花的挥发性成分分析

目的:探讨固相微萃取-气相色谱-质谱技术提取分析贡黄菊和贡白菊挥发性成分的方法。方法:分别用不同温度、不同平衡时间、不同萃取纤维头,进行顶空固相微萃取操作,结合气相色谱-质谱联用技术对贡黄菊和贡白菊的挥发性成分进行鉴定,通过改变取样条件观察各成分峰面积的变化,并用面积归一法测定其相对含量。结果:在水浴75℃、平衡时间6h时,用100μm聚二甲基硅氧烷萃取纤维顶空提取贡黄菊和贡白菊的成分效果较好;共鉴定贡黄菊和贡白菊挥发性成分53种,其中共有成分35种。结论:顶空固相微萃取-气相色谱-质谱技术可以简便快捷准确地进行菊花挥发性成分的分析鉴定。

Analysis of volatile components from the flowers of Chrysanthemum morifolium by GC-MS with solid-phase microextraction

OBJECTIVE: To study a method for extraction and analysis of volatile components from Chrysanthemum morifolium 'gonghuangjv' cv. nov (CM GHJ) and C. morifolium 'gongbaijv' cv. nov (CM GBJ) by solid-phase microextraction (SPME) and gas chromatography-mass spectrometry (GC-MS). METHOD: The volatile components were extracted in different temperature, different balance period and different extraction fiber using head space solid-phase microextraction (HS-SPME), and were identified by CGC-MS. The variety in integral area of each component was observed in different conditions and its relative content was determined by normalization of area. RESULT: The better condition of SPME for C. morifolium was that the sample was extracted using 100 microm polydimethylsiloxane (PDMS) extraction fiber after it had been balanced for 6 hours at 75 degrees C. 53 components from CM GHJ and CM GBJ were identified, and there were 35 same components in CM GHJ and CM GBJ. CONCLUSION: HS-SPME-GC-MS is convenient, rapid and reliable for analysis of volatile components in C. morifolium.