1·The group includes flavonoids, benzophenones, some coumarins, lignans, condensed tannins, and stilbenes.
这一组中包括黄酮类化合物，二苯甲酮、一些香豆素、木质素、缩合单宁和芪。
2·There are many active constituents in Ilex L. , such as triterpenes and triterpenoid saponins, flavonoids, coumarins, lignans, etc.
冬青属植物含有三萜及其苷类、 黄酮类、 香豆素、 木脂素等化学成分。
3·Result: Total 15 coumarins were separated, the relative contents of oxyimperatorin, imperatorin and isoimperatorin being up to 42.40%, 22.14% and 12.12% respectively.
结果：气相色谱质谱联用技术共鉴定出15种香豆素类成分，主要成分氧化前胡素、欧前胡素、异欧前胡素的相对含量分别达到42 .40 % ，2 2 .14 %和12 .12 % ；
4·Methods The content of the total coumarins was determined by UV spectrophotometry. Results The optimal detective wavelength was 320 nm for the total coumarins.
方法以蛇床子素为对照品，采用紫外分光光度法测定蛇床子中总香豆素含量。
5·Coumarins found in fruits and vegetables exhibit antimicrobial activity.
在水果和蔬菜中被发现的香豆素具有抗菌活性。