Chemical constituents and allelopathic activity of Machaerium eriocarpum Benth.
Natural product research, 2020•Taylor & Francis
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 …
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 …
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.
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