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. 2012 Oct 9;52(4):676–681. doi: 10.1007/s12088-012-0313-8

Table 1.

Antimicrobial activity of methyl caffeate isolated from S. torvum (2 mg/ml) using disc-diffusion method (zone of inhibition in mm)

Organism Methyl caffeate Streptomycin (25 μg/disc)
Gram positive
 Staphylococcus aureus 20 ± 0.71f 14 ± 0.71a
 Enterobacter aerogenes 0a 22 ± 0.71c,d
 Micrococcus luteus 9 ± 0.45b 24 ± 0.90d,e
 Shigella flexneri 0a 24 ± 0.90d,e
 Staphylococcus epidermidis 0a 14 ± 0.71a
Gram negative
 Proteus vulgaris 22 ± 0.71g 30 ± 0.71g
 Salmonella typhimurium 12 ± 0.71c 24 ± 0.90d,e
 Salmonella paratyphi-B 16 ± 0.45d 18 ± 0.71b
 Pseudomonasaeruginosa 20 ± 0.71f 30 ± 0.54g
 Bacillus subtilis 19 ± 0.71e 22 ± 0.84c,d
 Klebsiella pneumoniae 9 ± 0.45b 20 ± 0.71b
Fungi Fluconazole
 Candida albicans 20 ± 0.71f 28 ± 0.71f,g
 Aspergillus flavus 22 ± 0.81g 29 ± 0.71f,g

Values in each column followed by the same numerical were not significantly different by Duncan test at p ≤ 0.05. Streptomycin—standard antibacterial agent; fluconazole—standard antifungal agent. No activity—a and b, c, d, e, f, g increasing the mode of activity from lower to higher