scholarly journals Antimicrobial activity of ciprofloxacin against Pseudomonas aeruginosa, Escherichia coli, and Staphylococcus aureus determined by the killing curve method: antibiotic comparisons and synergistic interactions.

1985 ◽  
Vol 28 (2) ◽  
pp. 331-342 ◽  
Author(s):  
L J Chalkley ◽  
H J Koornhof
Keyword(s):  
Escherichia Coli ◽  
Staphylococcus Aureus ◽  
Pseudomonas Aeruginosa ◽  
Antimicrobial Activity ◽  
Synergistic Interactions ◽  
Curve Method ◽  
And Staphylococcus Aureus

Synthesis, Characterization and Antimicrobial Activity of Bis-Acetylferrocene Schiff Base

2011 ◽  
Vol 396-398 ◽  
pp. 1875-1878 ◽  
Author(s):  
Yu Ting Liu ◽  
Hai Long Guo ◽  
Da Wei Yin
Keyword(s):  
Escherichia Coli ◽  
Staphylococcus Aureus ◽  
Pseudomonas Aeruginosa ◽  
Antimicrobial Activity ◽  
Bacillus Subtilis ◽  
Salmonella Typhi ◽  
Bacterial Strains ◽  
Gram Negative ◽  
And Staphylococcus Aureus

Three bis-acetylferrocene schiff bases have been synthesized and characterized by IR, 1H NMR, and elemental analysis, the results conformed well with expected structures. The synthesized compounds were screened in vitro for their antimicrobial activity against three Gram-negative (Escherichia coli, Pseudomonas aeruginosa, and Salmonella typhi) and two Gram-positive (Bacillus subtilis and Staphylococcus aureus) bacterial strains. The results showed that these compounds are show excellent antimicrobia activities against Escherichia coli, Pseudomonas aeruginosa, Salmonella typhi ,Bacillus subtilis,Staphylococcus aureus.

Two Epimeric Flavalignans from Trichilia catigua (Meliaceae) with Antimicrobial Activity

2002 ◽  
Vol 57 (5-6) ◽  
pp. 483-488 ◽  
Author(s):  
Moacir G. Pizzolatti ◽  
Andreia F. Venson ◽  
Artur Smânia Júnior ◽  
Elza de F. A. Smânia ◽  
Raimundo Braz-Filho
Keyword(s):  
Escherichia Coli ◽  
Staphylococcus Aureus ◽  
Pseudomonas Aeruginosa ◽  
Antimicrobial Activity ◽  
Antibacterial Activity ◽  
Natural Products ◽  
Bacillus Cereus ◽  
Spectroscopic Data ◽  
2D Nmr ◽  
And Staphylococcus Aureus

A mixture of flavalignan cinchonains Ia and Ib was isolated from the bark of Trichilia catigua. The structures were established on the basis of spectroscopic data of the natural products and their methylated derivatives including 2D NMR experiments, and compared with data in the literature. These flavalignans exhibited antibacterial activity against Bacillus cereus, Escherichia coli, Pseudomonas aeruginosa and Staphylococcus aureus.

Antimicrobial Activity of 2,5-Dihydroxy-3-methyl-1,4-benzoquinone from Embelia schimperi

2008 ◽  
Vol 63 (1-2) ◽  
pp. 47-50 ◽  
Author(s):  
Ooko Selline Awino ◽  
Paul Chepkwony Kiprono ◽  
Kipkemboi Pius Keronei ◽  
Festus Kaberia ◽  
Andrew Ambogo Obala
Keyword(s):  
Escherichia Coli ◽  
Staphylococcus Aureus ◽  
Pseudomonas Aeruginosa ◽  
Antimicrobial Activity ◽  
Klebsiella Pneumoniae ◽  
Crude Extract ◽  
Pure Compound ◽  
Salmonella Spp ◽  
Zones Of Inhibition ◽  
And Staphylococcus Aureus

Chromatographic separation of an ethyl acetate extract from Embelia schimperi led to the isolation of a new compound identified as 2,5-dihydroxy-3-methyl-1,4-benzoquinone (1) on the basis of spectroscopic and physical data. The plant’s crude extract and pure compound 1 were assayed for in vitro antimicrobial activity against clinical strains of Salmonella spp., Proteus spp., Pseudomonas aeruginosa, Klebsiella pneumoniae, Escherichia coli, Cryptococcus neoformans, Shigella dysentriae and Staphylococcus aureus. Disc diffusion method was used and zones of inhibition, after respective incubation periods, were used to quantify antimicrobial activity. Standard antibiotics namely: augmentin, cotrimoxazole, gentamycin, tetracycline and lyncomycin were used as controls. The crude extract was inactive while the pure compound 1 showed significant activities against Salmonella spp., Proteus spp., Pseudomonas aeruginosa, Klebsiella pneumoniae, Escherichia coli, Cryptococcus neoformans, Shigella dysentriae and Staphylococcus aureus with zones of inhibition ranging from 10−20 mm. The most sensitive microorganism was P. aeruginosa while C. neoformans was insensitive to both the crude extract and compound 1.

scholarly journals Chemical constituents of Aspergillus sp EJC08 isolated as endophyte from Bauhinia guianensis and their antimicrobial activity

2013 ◽  
Vol 85 (4) ◽  
pp. 1247-1253 ◽  
Author(s):  
Eduardo A.A. Pinheiro ◽  
Josiwander M. Carvalho ◽  
Diellem C.P. dos Santos ◽  
Andre O. Feitosa ◽  
Patricia S.B. Marinho ◽  
...  
Keyword(s):  
Escherichia Coli ◽  
Staphylococcus Aureus ◽  
Pseudomonas Aeruginosa ◽  
Antimicrobial Activity ◽  
Chemical Constituents ◽  
2D Nmr ◽  
Good Activity ◽  
Ergosterol Peroxide ◽  
Aspergillus Sp ◽  
And Staphylococcus Aureus

The present work reports the isolation of five compounds from Aspergillus sp EJC08 isolated as endophytic from Bauhinia guianensis, a tipical plant of the Amazon. The compounds ergosterol (1), ergosterol peroxide (2), mevalolactone (3), monomethylsulochrin (4) and trypacidin A (5) were isolated by chromatographic procedures and identified by spectral methods of 1D and 2D NMR and MS. Compounds 3, 4 and 5 were tested against Escherichia coli, Pseudomonas aeruginosa, Bacillus subtilis and Staphylococcus aureus and showed good activity.

scholarly journals Characterization and antimicrobial activity of vaginal lactobacillus isolate

2011 ◽  
Vol 63 (1) ◽  
pp. 29-35 ◽  
Author(s):  
Gordana Zavisic ◽  
Zeljka Radulovic ◽  
Valentina Vranic ◽  
Jelena Begovic ◽  
L. Topisirovic ◽  
...  
Keyword(s):  
Escherichia Coli ◽  
Staphylococcus Aureus ◽  
Pseudomonas Aeruginosa ◽  
Antimicrobial Activity ◽  
Survival Rate ◽  
Bile Salts ◽  
Antimicrobial Effect ◽  
Low Ph ◽  
Probiotic Potential ◽  
Pathogenic Escherichia Coli

The aim of this study was to investigate the probiotic potential of bacteriocin-producing lactobacilli strain Lactobacillus plantarum G2 isolated from the vaginal mucus of healthy women. The antimicrobial effect of G2 was confirmed in the mixed culture with pathogenic Escherichia coli, Staphylococcus aureus, Salmonella abony and Pseudomonas aeruginosa, while bacteriocine activity was detected against S. aureus and S. abony only. The strain showed an excellent survival rate in low pH and in the presence of bile salts. The percentage of adhered cells of L. plantarum G2 to hexadecane was 63.85?2.0 indicating the intermediate hydrophobicity.

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