Characterization of flavonoids from candidate striga grass in controlling diet legumes Cicer arietinum and Vigna radiata

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ANYANGO ANNA AKUMU
HUDSON NYAMBAKA
SERGE PHILIBERT KUATE
BALDWYN TORTO

Abstract

Akumu AA, Nyambaka H, Kuate SP, Torto B.2018. Characterization of flavonoids from candidate striga grass in controlling diet legumes Cicer arietinum and Vigna radiata.Biofarmasi J Nat Prod Biochem 16: 83-98. In Africa, intercropping of some legumes with cereal plants has been noticed to generate exceptional reduction of Striga invasion and enhanced production of cereal crop. Desmodium uncinatum administers Striga invasion in intercrop with cereals through an allelopathic technique, which includes postsprouting accretion inhibitors emanated from the roots. Having a potential to be a new technique for grass administering, Allelopathy is a natural and environmentally friendly method. A standardized profiling technique based on Reverse Phase-High Performance Liquid Chromatography (RP-HPLC) and Liquid Chromatography coupled with Mass Spectrometry (LC/MS) was utilized to determine flavonoids in extracts of chickpea (Cicer arietinum) and mung bean (Vigna radiata), potential trap plants for Striga grass. Nine flavonoids involving mono-and diglycosyl derivatives of fisetin, baicalein, rhamnetin, isorhamnetin, formononetin, quercetin, isosakuranetin, and sakuranetin were temporarily distinguished. The obtained phenolics were available at concentrations higher than 0.001% of the dry materials. Many of these phenolic mixtures have been claimed to possess human health advantages. These glycosylated flavones are noted for the first time in these two species. The comprehensive analysis of the polar secondary metabolites in these leguminous plants was useful for comprehending their inhibitory chemistry and proposed biosynthesis by C-glucoside characteristics. All the segregated and described mixtures in the diet legume C. arietinum were O-glucosylated. While, Food legume V. radiata should be observed further to see if it can attain Desmodium’s allelopathic ability since it possesses inhibitory chemistry and proposed biosynthesis by C-glucosylation.

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