2017
DOI: 10.1590/0001-3765201720160126
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Abstract: This study aims to identify special metabolites in polar extracts from Urochloa humidicola (synonym Brachiaria humidicola) that have allelopathic effects and induce secondary photosensitization in ruminants. The compounds were isolated and identified via chromatographic and spectroscopic techniques. The compounds 4-hydroxy-3-methoxy-benzoic acid, trans-4-hydroxycinnamic acid, and p-hydroxy-benzoic acid; the flavonols isorhamnetin-3-O-β-d-glucopyranoside and methyl quercetin-3-O-β-d-glucuronate; and kaempferitr… Show more

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Cited by 14 publications
(14 citation statements)
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“…Special metabolites have been previously isolated and identified for U. humidicola [12]. However, only one previous report was found that aimed at isolating, identifying and characterizing the allelopathic effect of chemical substances produced by U. humidicola [10].…”
Section: Discussionmentioning
confidence: 99%
See 1 more Smart Citation
“…Special metabolites have been previously isolated and identified for U. humidicola [12]. However, only one previous report was found that aimed at isolating, identifying and characterizing the allelopathic effect of chemical substances produced by U. humidicola [10].…”
Section: Discussionmentioning
confidence: 99%
“…Although studies confirmed that U. humidicola, as well as other Brachiaria species, has allelopathic activity [11] [12], few reports exist of their effects on the tropical forage legumes used in mixed pastures. The aim of the present study was to evaluate the allelopathic effect of U. humidicola on the germination of Lactuca sativa L. (used as a standard for sensitivity) and the legumes Macrotyloma axillare and Stylosanthes ssp., both recommended for mixing with forage grasses, and to perform a phytochemical characterization of the shoot and root crude extracts of U. humidicola using phytochemical prospecting techniques, 1 H NMR and capillary electrophoresis.…”
Section: Introductionmentioning
confidence: 99%
“…According to Brum et al (2007), the negative factors are the promotion of diseases and decreases in animal performance. Suharti et al (2011) observed positive effects on the SCFA profile and a decrease in ruminal CH 4 production, when using saponins isolated from Sapindus rarak; this is important given that saponins are also found in U. humidicola (Oliveira et al, 2017).…”
Section: Introductionmentioning
confidence: 97%
“…Seasonal and regional differences in accumulation of secondary products may cause differences in staining for flow cytometry. Secondary metabolites and their phytotoxicity on forage legumes have been recognized in Urochloa tropical forage grasses (Ribeiro et al ., 2012, 2018; Oliveira et al ., 2017; Feitoza et al ., 2020), which has been suggested to make it difficult to analyze these plants by flow cytometry (Penteado et al ., 2000).…”
Section: Introductionmentioning
confidence: 99%