Phytochemical characterisation and bioprospection for antibacterial and antioxidant activities of Lippia alba Brown ex Britton & Wilson (Verbenaceae).

作者: Graziela Teixeira de Oliveira , Jaqueline Maria Siqueira Ferreira , William Gustavo Lima , Lucas Ferreira Alves , Joaquim Maurício Duarte-Almeida

DOI: 10.1080/14786419.2017.1335727

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摘要: AbstractEthanol extract and fractions obtained from fresh dry aerial parts of Lippia alba were examined in order to determine their phytochemical composition, antioxidant capacity antibacterial activities. The ethanol extracts exhibited an effect by the DPPH assay, especially samples plant. HPLC analysis ethyl acetate identified presence phenolic acids flavonoids. showed activity against reference multidrug-resistant strains Staphylococcus aureus Enterococcus faecalis (MIC range 2000–250 μg/mL). hexane dichloromethane plant better Escherichia coli 250 125 μg/mL, respectively), but all less active Gram-negative species evaluated. results that L activity, even...

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