Costa Vanessa Cruz de Oliveira, Borghi Alexandre Augusto, Mayer Juliana Lischka Sampaio, Sawaya Alexandra Christine Helena Frankland
Institute of Biology, State University of Campinas, Campinas, Brazil.
Faculty of Pharmaceutical Science, State University of Campinas, Campinas, Brazil.
Planta Med. 2018 Feb;84(3):191-200. doi: 10.1055/s-0043-119226. Epub 2017 Sep 19.
and are medicinal plants popularly used in Brazil for colds and asthma. Although several studies report differences in their composition, they are frequently used indistinctly, which may be due to misidentification of the species or the plant part used. Herein, the chemical, anatomical, and morphological profiles of both species were evaluated, seeking to differentiate them. Due to the pattern of secondary metabolites found in and , the chemical profile of the leaves was the characteristic that best differentiated the two species. Coumarin was present in all the leaf samples of but absent or in low concentration in leaf samples of The stems presented coumarin in both species, albeit in different concentrations. The quantification of chlorogenic and dicaffeoylquinic acids was crucial for the separation of the two species, as higher concentrations are found in . The anatomic structure of the leaves, stem, and petioles of both species was conserved, even when exposed to different environments, but presented only subtle differences between species. The morphology of the leaves presented different characteristics for each species but altered when exposed to shade. Therefore, the chemical analysis together with the morphological characteristics of plants grown in full sunlight may be used for the correct identification of these species.
[植物名称1]和[植物名称2]是巴西常用的药用植物，用于治疗感冒和哮喘。尽管多项研究报告了它们成分上的差异，但它们经常被不加区分地使用，这可能是由于物种或所使用的植物部位被误认。在此，对这两个物种的化学、解剖学和形态学特征进行了评估，以区分它们。由于在[植物名称1]和[植物名称2]中发现的次生代谢物模式，叶片的化学特征是区分这两个物种的最佳特征。香豆素存在于[植物名称1]的所有叶片样本中，但在[植物名称2]的叶片样本中不存在或含量较低。两个物种的茎中都含有香豆素，尽管浓度不同。绿原酸和二咖啡酰奎尼酸的定量对于区分这两个物种至关重要，因为在[植物名称1]中发现的浓度更高。两个物种的叶片、茎和叶柄的解剖结构是保守的，即使暴露在不同环境中，但物种之间仅存在细微差异。每个物种的叶片形态呈现出不同的特征，但在遮荫条件下会发生变化。因此，化学分析以及在充足阳光下生长的植物的形态特征可用于正确识别这些物种。
