METHODS The volatile oil of Fritillaria ussuriensis Maxim was extracted by SFECO2, and analyzed by gas chromatography-mass spectrometry (GC-MS).

• [方法]采用超临界萃取技术提取平贝母挥发油，采用气相色谱-质谱联用技术对其中的化学成分进行分析和鉴定。