"In vitro Antibacterial Potential of Alkaloids of Samanea saman (Jacq.) Merr. Against Xanthomonas and Human Pathogenic Bacteria"

Raghavendra, M. P. and Satish, S. and Raveesha, K. A. (2008) "In vitro Antibacterial Potential of Alkaloids of Samanea saman (Jacq.) Merr. Against Xanthomonas and Human Pathogenic Bacteria". World Journal of Agricultural Sciences, 4 (1). pp. 100-105. ISSN ISSN 1817-3047

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Aqueous extract, different solvent extracts and isolated constituents (alkaloids) of leaves of Samanea saman (Jacq.) Merr. (fabaceae) were assayed for antibacterial activity by cup diffusion method against three phytopathogenic Xanthomonas pathovars viz., Xanthomonas axonopodis pv. malvacearum, X. a. pv. phaseoli and X. campestris pv. vesicatoria and 14 human pathogenic bacteria. The pathovars are associated with angular leaf spot of cotton, common blight of bean and bacterial spot of tomato respectively. Aqueous and methanol extracts showed significant antibacterial activity against all pathovars of Xanthomonas and the activity varied among 14 human pathogenic bacteria. Methanol extract was subsequently fractioned and monitored by bioassay leading to the isolation of active fraction by further phytochemical analysis. This active fraction recorded highly significant antibacterial activity in vitro (MIC 6, 6 and 4 mu g ml super(-1) for Xanthomonas pathovars and. 3-11 mu g ml super(-1) for human pathogenic bacteria) compared with synthetic antibiotics such as Bacterimycin 2000 and Sreptocycline tested at recommended dosage for phytopathogenic bacteria and Gentamycin and Streptomycin discs for human pathogenic bacteria. The active fraction was further confirmed as alkaloids.

Item Type: Article
Additional Information: Unmapped bibliographic data: J2 - World Journal of Agricultural Sciences [Field not mapped to EPrints] LB - 1227263 [Field not mapped to EPrints]
Subjects: Agriculture Biological Sciences > Botany
University of Mysore > PG Campuses > Manasagangotri, Mysore > Agriculture Biological Sciences > Botany
Divisions: PG Campuses > Manasagangotri, Mysore > Botany
Depositing User: Ms. Manjula p
Date Deposited: 10 Aug 2016 06:10
Last Modified: 10 Aug 2016 06:10
URI: http://eprints.uni-mysore.ac.in/id/eprint/18883

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