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Table 5 Comparison of MZI among leaf extracts of O. integrifolia

From: Determination of antioxidant and antimicrobial activities of leaf extracts of Otostegia integrifolia

Extracts and standard antibiotics Concentration in µg/mL Average values of zone of inhibition
S. aurous S. pyogens E. coli S. typhi K. pneumoniae
Methanol extract 25 11.4 ± 0.29 14.6 ± 0.25 8.5 ± 0.09 9..3 ± 0.03 6.4 ± 0.21
50 11.7 ± 0.37 15.0 ± 0.36 9.7 ±0.59 9.9 ±0.16 7.6 ± 0.29
75 12.2 ± 0.33 15.3 ± 0.33 11.1 ± 0.37 10.1 ± 0.04 10.3 ± 0.43
100 13.5 ± 0.40 15.7 ± 0.26 13.9 ± 0.16 10.1 ±0.38 12.2 ± 1.03
Ethyl acetate extract 25 0 10.4 ±0.17 6.6 ± 0.12 6.4 ±0.05 12.6 ± 0.24
50 0 11.6 ± 0.34 7.1 ± 0.17 6.9 ± 0.16 13.4 ± 0.34
75 0 15.5 ± 0.1 7.8 ± 0.29 8.6 ±0.28 14.8 ± 0.26
100 0 17.1 ± 0.14 8.6 ± 0.21 9.4 ± 0.49 16.8 ± 0.41
Petroleum ether extract 25 0 0 0 0 0
50 0 0 0 0 0
75 0 0 0 0 0
100 0 0 0 0 0
Standard antibiotics Gen. 24.5 ± 0.12 27.7 ± 0.08 25.0 ± 0.12 23.4 ±0.37 23.1 ±0.33
Chl. 18.8 ± 0.21 31.4 ± 0.15 16.6 ± 0.17 15.5 ± 0.21 19.8 ±0.13
  1. S. aureus, Staphylococcus aureus; S. pyogens, Streptococcus pyogens; E. coli, Escherichia coli; S. typhi, Salmonella typhi; K. pneumoniae, Klebsiella Pneumoniae; Gen, Gentamycin; Chl, Chloramphenicol