Abstract
ObjectiveTo investigate antimicrobial effects of ethanolic and aqueous extracts of Salacia chinensis (S. chinensis) Linn. against pathogenic bacteria and fungi. MethodsThe Staphylococcus aureus (S. aureus) (MTCC 96), Staphylococcus epidermidis (S. epidermidis) (MTCC 435), Bacillus subtilis (B. subtilis) (MTCC 121), Escherichia coli (E. coli) (MTCC 443), Klebsiella pneumoniae (K. pneumoniae) (MTCC 432), Proteus mirabilis (P. mirabilis) (MTCC 1429), Salmonella paratyphi A (S. paratyphi A) (MTCC 735), Salmonella typhimurium (S. typhimurium) (MTCC 98), Shigella flexneri (S. flexneri) (MTCC 1457) and Pseudomonas aeruginosa (P. aeruginosa) (MTCC 424), Candida albicans (C. albicans) (MTCC 183) and Cryptococcus neoformans (C. neoformans) (clinical isolate) were originally obtained from Microbial Type Culture Collection Centre, Institute of Microbial Technology, Chandigarh, India. Antimicrobial activity was carried out by disc diffusion and broth dilution methods against pathogens by using crude ethanolic and aqueous extracts. ResultsEthanolic extract of S. chinensis L. leaves showed significant antimicrobial activity against S. epidermidis (33.20 mm), C. albicans (30.40 mm) and C. neoformans (18.20 mm) mean values were documented. Aqueous extract of leaves showed significant inhibitory activity against C. neoformans (19.8 mm) and S. epidermidis (17.80 mm) were observed. Based on broth dilution method, the ethanolic extract of crude plant material showed the minimum inhibitory concentration (MIC) values against S. epidermidis, C. neoformans (256 μg/mL) and C. albicans (512 μg/mL), whereas the aqueous extract of S. chinensis L. leaves showed significant inhibitory activity against S. epidermidis (512 μg/mL) and C. neoformans (1024 μg/mL) were observed. ConclusionsThe present result revealed that ethanolic extract of S. chinensis L. possesses significant antifungal activity when compared as the antibacterial activities.
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