alexa Phytochemical constituents and antimicrobial activity of Albizia Adianthifolia
e-ISSN: 2321-6182 p-ISSN: 2347-2332

Research & Reviews: Journal of Pharmacognosy and Phytochemistry
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Research Article

Phytochemical constituents and antimicrobial activity of Albizia Adianthifolia

Mustapha N Abubakar, Runner RT Majinda*

Chemistry Department, University of Botswana, P/Bag 0022 Gaborone, Botswana

Corresponding Author:
Runner RT Majinda
Chemistry Department, University of Botswana, P/ Bag 0022 Gaborone, Botswana
E-mail: [email protected]

Received: 07/21/2015 Accepted: 09/28/2015 Published:10/07/2015

 

Abstract

The aim was designed to isolate, elucidate and carry out antimicrobial activity of the isolates against bacterial and fungal strains. Using several chromatographic separation techniques, three known flavonoids, 3’,4’,7-trihydroxy- 5-methoxyflavone (5-methoxyluteolin) 1, 3’,4’,3,4,7,8-hexahydroxyflavanol (melacacidin) 2, and 3’,4’,7,8-tetrahydroxyflavanone (isookanin) 3 along with three other known constituents identified as, 2,3-epoxy-3-[4-hydroxy-3,4- dimethoxyphenyl]propan-1-ol 4, D-chiro inositol (pinitol) 5 and protocatechuic acid 6 were isolated and reported for the first time in Albizia adianthifolia. The structure of these compounds were elucidated by means of spectroscopic methods such as UV, IR, MS, 1D and 2D (COSY, HMQC, HMBC, NOESY) NMR and by comparison of their data with those of published compounds. Using TLC plate agar overlay technique, the preliminary antimicrobial activity of these compounds were tested against some selected bacterial strains E. coli, P. aeruginosa, B. subtilis, S. aureus and a fungus C. albicans and the results suggests weak to moderate activity.

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