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Table 3 Zone of inhibition (in mm) of the different concentrations of crude and solvent fractions of the leaves of Rhamnus prinoides against gram negative bacteria

From: Evaluation of the in vitro antibacterial activity of the solvent fractions of the leaves of Rhamnus prinoides L’Herit (Rhamnaceae) against pathogenic bacteria

Category of test Concentration Bacteria
P. aeruginosa S. typhi
Stand Clinic stand
Crude 19.5 mg/well 11.00 ± 0.58a3c1d2 10.67 ± 0.88a3 13.33 ± 0.33a3d2
39 mg/well 13.33 ± 0.33a3 13.00 ± 0.58a3 14.00 ± 0.58a3d2
78 mg/well 14.33 ± 0.33 a3 14.00 ± 0.58a3 17.67 ± 0.67a3
Cip 0.005 mg/disc* 25.67 ± 0.33 24.33 ± 0.88 30.00 ± 0.58
Methanol 19.5 mg/well 10.33 ± 0.33a3d1 10.33 ± 0.33a3c1d2 11.00 ± 0.58a3d2
39 mg/well 12.00 ± 1.00a3 12.33 ± 0.33a3 12.67 ± 0.88a3d1
78 mg/well 13.67 ± 0.33a3 13.67 ± 0.33a3 15.67 ± 0.33a3
Cip 0.005 mg/disc* 24.33 ± 0.33 24.00 ± 0.58 31.00 ± 0.58
Chloroform 19.5 mg/well --- --- 10.33 ± 0.33a3d2e1
39 mg/well --- --- 11.67 ± 0.33a3
78 mg/well --- --- 13.00 ± 0.58a3g3
Cip 0.005 mg/disc* NT NT 30.33 ± 0.33
  1. Values are expressed as Mean ± S.E.M (n = 3), analysis was performed with One-Way ANOVA followed by Tukey test; acompared to positive control, bto 19.5 mg/well, cto 39 mg/well, dto 78 mg/well, eto crude 19.5 mg/well, fto crude 39 mg/well, gto crude 78 mg/well; 1P < 0.05, 2P < 0.01, 3P < 0.001. The negative control has shown no antibacterial activity * = positive control, Stand = standard (ATCC) strains whereas Clinic = clinically isolated strains, Cip = Ciprofloxacin, --- = no activity