Root of Eucalyptus grandis have been naturally,ultrasonically and continuously extracted with hexane,and have been identified with gas chromatograph-mass spectrometer(GC-MS).

• 以正己烷作浸提剂,用冷浸、超声、索氏3种不同方法浸提巨桉的树根,然后用气质联用仪(GC-MS)检测浸提液的化学成分。