气质联用法分析大花红景天顶空固相微萃取与水蒸气蒸馏的挥发性成分

目的：比较顶空-固相微萃取法（HS-SPME）和水蒸气蒸馏法（SD）提取红景天中挥发性成分差异。方法：采用顶空固相微萃取法和水蒸气蒸馏法提取红景天挥发性成分,并用GC-MS联用技术对红景天的挥发性成分进行分析。结果：顶空固相微萃取法鉴定出39种挥发性化学成分,水蒸气蒸馏法鉴定出16种挥发性化学成分,共有成分4种。结论：2种方法鉴定出的挥发性成分及其相对含量上存在一定差异,与水蒸气蒸馏法比较,顶空固相微萃取法所得挥发性成分数目和种类较多,具有更高的检索匹配度和灵敏度,有明显的优越性。

GC-MS Comparative Analysis of Volatile Compounds Extracted from Rhodiola Crenulata Respectively by HS SPME and SD

Objective： To compare the volatile compounds extracted from Rhodiola renulata respectively by HS-SPME and SD. Methods：The volatile constituents from Rhodiola crenulata were extracted respectively by HS-SPME and SD, and then the contents and the names were confirmed by GC-MS. Results：Totally 39 compounds were identified from Rhodiola crenulata by HS-SPME while 16 ones were identified by SD. Among them, 4 common compounds were detected. Conclusion： There are some differences between the two methods. Compared with SD, HS-SPME is obviously better because more volatile constituents can be extracted from the herb, furthermore, HS-SPME has notable advantages of higher retrieval matching and sensitivity.