1. Objective: To compare the extraction efficiency of imperialine extracted with different solvents.
   比较不同溶剂对西贝素的提取效率的影响。
2. The result showed that both product of tissue culture and cultispecies contain imperialine which is an essential elements of the alkaloids.
   结果表明，不论是组织培养物还是栽培贝母中都含有贝母碱的主要成分――西贝素。

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