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Articles by A. Safary
Total Records ( 3 ) for A. Safary
  H. Motamedi , A. Safary , S. Maleki and S.M. Seyyednejad
  The antibacterial activity of Ziziphus spina-christi leaves ethanolic and methanolic extracts were examined using agar disc diffusion method against eight bacteria (Salmonella typhi, Proteus mirabilis, Shigella dysenteriae, Escherichia coli, Klebsiella pneumoniae, Brucella melitensis, Bordetella bronshiseptica and Pseudomonas aeruginosa). These extracts had inhibitory effect at various concentrations (0.05, 0.1, 0.2, 0.3 and 0.4 g mL-1) against tested bacteria. The ethanolic extract had the highest activity (20 mm) against B. bronchiseptica while the lowest activity (7 mm) was demonstrated by the methanolic extract on K. pneumoniae. Studies on the Minimum Inhibitory Concentration (MIC) and Minimum Bactericidal Concentration (MBC) of the methanolic extract on two selected bacteria showed that the S. dysenteriae had the highest MIC (18 mg mL-1) and MBC (64 mg mL-1) values.
  A. Safary , M. Roayayi Ardakani , A. Abolhasani Suraki , M. Akbarzade Khiavi and H. Motamedi
  Marine biosurfactants produced by some marine microorganisms have been paid more attention, particularly for the bioremediation of the sea polluted by crude oil. The goal of this study was isolation and characterization of biosurfactant producing bacteria from Caspian Sea water. Ten morphologically distinct microbial colonies were isolated and screened for biosurfactant production. From the results, tow strains isolated from Caspian Sea in Iran, which were able to grow on crud oil as sole carbon sources and to produce biosurfactants. Primary screening of biosurfactant-producing colonies was performed using the qualitative drop-collapse test, oil displacement test and hemolytic test. Among tow strains CpA1 completely emulsified crud oil in MSM medium within 48 h of cultivation. This strain exhibited the highest activity for oil displacement test toward crud oil (3.14 cm2) and emulsification activity. In second screening, the surface tension of culture supernatants for CpA1 isolate grown under identical conditions was measured by Captive Drop Cell instrument. This strain reduced the growth medium surface tension below 40 mN m-1 and selected as a best biosurfactant producer in this study.
  A. Safary , H. Motamedi , S. Maleki and S.M. Seyyednejad
  The antibacterial activity of Q. brantii fruits ethanolic and methanolic extracts were examined using agar disc diffusion method against eight bacteria (Salmonella typhi, Proteus mirabilis, Shigella dysenteriae, Escherichia coli, Klebsiella pneumoniae, Brucella melitensis, Bordetella bronchiseptica, Pseudomonas aeruginosa). These extracts had inhibitory effect at various concentrations (0.5, 0.1, 0.2, 0.3 and 0.4 g mL-1) against tested bacteria. The ethanolic extract had the highest activity (30 mm) against Br. melitensis and B. bronchiseptica while the lowest activity (7 mm) was demonstrated by the methanolic extract on E. coli. Studies on the Minimum Inhibitory Concentration (MIC) and Minimum Bactericidal Concentration (MBC) of the methanolic extract on tested microorganisms showed that the highest MIC (20 mg mL-1) and MBC (32 mg mL-1) were demonstrated against Sh. dysenteriae, B. bronchiseptica and P. mirabilis had the highest MIC and MBC values (32 mg mL-1) for the ethanolic extract.
 
 
 
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