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. 2020 Mar;34(6):884-888.
doi: 10.1080/14786419.2018.1508136. Epub 2018 Nov 20.

Chemical constituents and allelopathic activity of Machaerium eriocarpum Benth

Charlyana Carvalho Bento  1 , Marcelo Marucci P Tangerina  2 , Ana C Zanatta  3 , Ângela Lúcia Bagnatori Sartori  4 , Danilo Miralha Franco  5 , Clélia Akiko Hiruma-Lima  6 , Wagner Vilegas  3 , Luiz Fernando Rolim de Almeida  5 , Miriam Sannomiya  1
Affiliations

Chemical constituents and allelopathic activity of Machaerium eriocarpum Benth

Charlyana Carvalho Bento et al. Nat Prod Res. 2020 Mar.

Abstract

The analysis by HPLC-PDA of the hydroalcoholic extract of the leaves of M. eriocarpum together with the injection of the fractions containing the already identified metabolites allowed the detection of at least 5 flavonoids, of which two are derived from apigenin and three from luteolin. After isolating larger amounts of isovitexin (I), assays were performed to evaluate the allelopathic activity together with the crude extract. The results show that the initial inhibition indexes were very similar to those observed in the treatments with F17 (Fraction enriched in isovitexin) and F18 (isovitexin), mainly in the concentrations of 500 and 1000 mg L-1. The index of the number of lateral roots, an increase of the inhibitory effect is observed with the increase of the concentration of M. eriocarpum extract.

Keywords: C-flavones; Fabaceae; Legume; allelopathy; flavonoids; isovitexin.

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