In vitro antimicrobial activity of Nigella sativa oil against multi-drug resistant bacteria.
Salman, Mohd Tariq; Khan, Rahat Ali and Shukla, Indu (2006) In vitro antimicrobial activity of Nigella sativa oil against multi-drug resistant bacteria. Unimed Kulliyat, II (1). pp. 8-13.
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Nigella sativa L. essential oil was studied for antibacterial activity against various clinical isolates of bacteria resistant to a number of antibiotics, in varying concentrations by Disc Agar diffusion technique using impregnated filter paper discs on inoculated Muellar Hinton agar plates. The oil showed pronounced dose dependent antibacterial activity which was more against Gram +ve than Gram –ve bacteria. Among Gram +ve bacteria tested, Bacillus subtilis, Staphylococcus aureus, Staphylococcus epidermidis, other coagulase –ve Staphylococci and Streptococcus pyogenes were sensitive to the oil and 2 (Enterococcus faecalis, Streptococcus agalactiae) were resistant. Among Gram –ve bacteria tested, only Pseudomonas aeruginosa was sensitive to oil and rest (Acinetobacter baumannii, Citrobacter freundii, Klebsiella pneumoniae, Proteus mirabilis, Proteus vulgaris and Vibrio cholerae) were insensitive. Out of 147 strains tested, most of which were resistant to a number of antibiotics, 97 were inhibited by the oil.
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