细叶石斛和翅梗石斛花朵赋香成分的GC-MS分析

Aroma Constituents in Flower of Dendrobium hancockii and D. trigonopus Based on SPME-GC-MS Analysis

摘要:
目的本研究明确2种浓香型石斛花朵的香气成分及其含量，探明其香气组成，以期为石斛花的保健开发提供参考。
方法采用顶空固相微萃取（HS-SPME）结合气相色谱-质谱联用（GC-MS）技术，分析了2种浓香型石斛花朵的挥发性成分。
结果发现细叶石斛花含挥发性成分52个，翅梗石斛花含挥发性成分35个，主要成分皆为烯烃类。
结论首次测定了翅梗石斛新鲜花朵的挥发性成分，其特征香气成分为罗勒烯、β-石竹烯和d-柠檬烯。细叶石斛花的特征香气成分为罗勒烯、β-石竹烯、芳樟醇。

Abstract:
Objective To analyze the aroma components and the relative contents in the flowers of two Dendrobium species, D. hancockii and D. trigonopus.
Method The volatile constituents and their contents were analyzed by solid-phase microextraction (SPME) and gas chromatography-mass spectrometry (GC-MS).
Result For the first time, the volatile constituents were analyzed in fresh flowers of D. trigonopus and thirty-five compounds were characterized. Fifty-two compounds were characterized in D. hancockii. The main volatile constituent in both the two species was olefin.
Conclusion The characteristic aroma components are (Z)-β-Ocimene, β-Caryophyllene and Linalool in D. hancockii flower. The characteristic aroma components are (Z)-β-Ocimene, β-Caryophyllene and d-(+)-Limonene in D. trigonopus flower.