GC-MS Analysis of the Composition of the Volatile Oil from Lilii Bulbus by Supercritical-CO₂ Fluid Extraction

OBJECTIVE To research the volatile oil from Lilii Bulbus. METHODS The volatile oil from Lilii Bulbus was extracted by supercritical-CO₂ fluid extraction(SFE) and identified by GC-MS. The relative percentage content of components was determined by the area normalization method. RESULTS 50 components of Lilii Bulbus had been identified by SFE, which accounted for above 72.96% of the total volatile oil. CONCLUSION The volatile oil by SFE had many components and high efficiency. There were differences between SPE and steam distillation.