Potencial alelopático e identificação dos metabólitos secundários em extratos de Canavalia ensiformis L.
Keywords:
allelopathy, jack bean, phytochemicalAbstract
Species that have allelopathic potential are promising in agriculture, with the perspective of identifying their secondary metabolites and manipulating them, for practical applications and, thus, be used to control weeds. In this context, this work aimed to verify the allelopathic effect and identify the secondary metabolites in Canavalia ensiformis species. The Lactuca sativa, Digitaria insularis, Emilia coccinea, and Portulaca oleracea species were used as recipient species. To evaluate the allelopathic potential, the ethanolic extract of the shoot (leaf + stem) of the donor species was carried out. Potential allelopathic effects were evaluated by germination tests and initial seedling growth. The identification of the secondary metabolites of the C. ensiformis shoot was also performed using the high-performance liquid chromatography technique. The ethanolic extract causes germination inhibition and germination speed index of L. sativa. The C. ensiformis shoot contains the compounds belonging to phenolic acids (chlorogenic acid, ferulic acid, and caffeic acid), flavonoids (kaempferol, naringin, and rutin), and carboxylic acids (citric, malonic, and aspartic acids), which can be responsible for the allelopathic activity of this species.
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