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Phytosterols from Spondias mombin Linn with Antimycobacterial Activities

OLUGBUYIRO, J.A.O and Moody, J. O. and Hamann, M. T (2013) Phytosterols from Spondias mombin Linn with Antimycobacterial Activities. African Journal of Biomedical Research, 16 (1). pp. 19-24. ISSN 1119-5096

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The growing problems of tuberculosis have led to the search for new anti-Mtb agents from higher plants. The stem bark of Spondias mombin was evaluated for its in vitro activity against Mycobacterium tuberculosis (H37Rv strain). Bioassay-guided fractionation of the methanol extract was carried out by Vacuum Liquid Chromatography (VLC) on Silica gel (230-400 mesh) and purification was done using HPLC and TLC. In vitro antimycobacterial susceptibility was performed by a fluorometric microplate alamar blue assay (MABA) and percentage mycobacterial inhibition was calculated. The structures of the isolated compounds were established by spectroscopic analysis. The active VLC fraction exhibited 91% inhibition against M. tuberculosis H37Rv at a concentration of 40 µg/mL. The HPLC fraction SMi-15 containing compounds 1 and 2 showed 92.8% inhibition against M. tuberculosis. Two new antimycobacterial phytosterols were isolated from the stem bark of S. mombin and the structureswere identified as mombintane I (1) and mombintane II (2). The stem bark extractives of S. mombin contain antitubercular principles of the class phytosterol and support an important potential of triterpenoids.

Item Type: Article
Subjects: Q Science > QD Chemistry
Q Science > QR Microbiology
R Medicine > RS Pharmacy and materia medica
Divisions: Faculty of Engineering, Science and Mathematics > School of Chemistry
Date Deposited: 18 Mar 2016 10:28
Last Modified: 18 Mar 2016 10:28

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