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• W2049856985 abstract "Searsia chirindensis is used in South African traditional medicine for management of bacterial infections such as diarrhoea. Aim of the study was to examine the phytochemical composition from the leaves of Searsia chirindensis that is responsible for the ethnomedicinal use of this plant. The crude extract (80% methanol) was extracted sequentially with dichloromethane (DCM), ethyl acetate (EtOAc) and n-butanol. The extracts and isolated compounds were tested for their antibacterial activity against Gram-negative (Campylobacter jejuni, Escherichia coli and Shigella flexneri) and Gram-positive (Staphylococcus aureus) bacterial strains using the microdilution method. Bioguided fractionation of EtOAc fraction afforded five phenolic compounds. Structural elucidation was carried out using NMR (1D and 2D) spectroscopic analyses. Of the three fractions obtained from the crude extract, EtOAc was the most active and its fractionation afforded methyl gallate (1), and four flavonol glycosides: myricetin-3-O-arabinopyranoside (2), myricetrin-3-O-rhamnoside (3), kaempferol-3-O-rhamnoside (4) and quercetin-3-O-arabinofuranoside (5). These compounds are reported from Searsia chirindensis for the first time. All the compounds showed good antibacterial activity against all bacterial strains tested. Their minimum inhibitory concentrations ranged from 30 to 250 µg/mL. Antibacterial activity demonstrated by the extracts and isolated compounds provides credence to the ethnomedicinal use of Searsia chirindensis against diarrhoea." @default.
• W2049856985 created "2016-06-24" @default.
• W2049856985 creator A5024433756 @default.
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• W2049856985 date "2013-11-01" @default.
• W2049856985 modified "2023-09-26" @default.
• W2049856985 title "Isolation and characterization of antimicrobial constituents of Searsia chirindensis L. (Anacardiaceae) leaf extracts" @default.
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• W2049856985 doi "https://doi.org/10.1016/j.jep.2013.09.016" @default.
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• W2049856985 hasPublicationYear "2013" @default.
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