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.