目的比较不同产地贯叶连翘中金丝桃素和伪金丝桃素的含量。
Objective To compare the contents of hypericin and pseudohypericin in Hypericum performatum L.
单位叶面积的叶绿素素含量在幼叶和老叶较低而成熟叶中较高，类胡萝卜素随着叶龄的增加而增加。
Chlorophyll contents were less in young and old leaves than in mature leaves, while carotenoids were increased with leaf age.
综述了近年1.8-桉叶油素的研究进展，展望了桉叶油素提纯的研究方向和发展前景。
A review of the recent research progress on 1,8-cineole is presented and discussed in this paper.
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