Arctium lappa L. (Asteraceae) occupies a prominent position in the ethnotherapeutics practices. The herb is known to contain a number of bioactive metabolites, which have immense therapeutic value. The objective of our present investigation was to estimate the variation of metabolites in different parts and phonological stages of A. lappa. This investigation has been done using a high-performance thin-layer chromatography technique. The present analysis reveals that the root (vegetative stages) holds the significantly high content of triterpenoids (betulinic acid, oleanolic acid, and lupeol), in comparison to the reproductive stage.

中文翻译：

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牛Arc子的次生代谢产物：植物部位和物候阶段的变化

牛子（Arctium lappa L。）（菊科）在民族治疗实践中占有重要地位。已知该草药含有许多具有巨大治疗价值的生物活性代谢物。我们目前研究的目的是估计苜蓿不同部位和语音阶段的代谢产物变化。该研究已经使用高性能薄层色谱技术完成。目前的分析表明，与生殖阶段相比，根部（营养阶段）拥有很高含量的三萜类化合物（贝丁酸，齐墩果酸和羽扇豆酚）。