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Table 2 Antibacterial and anti-yeast activity of the tested plant extracts determined by agar well diffusion assay

From: Antimicrobial activity of some plant materials used in Armenian traditional medicine

Plant species Part tested Extract Diameter of growth inhibition zone with standard deviation (mm)
SA a BS PA EC ST CG CA
Agrimonia eupatoria Whole plant Water 9 ± 0.6
Methanol 10 ± 0.6 11 ± 0.6 11 ± 0.6 11 ± 0.6 11 ± 0.6
Chloroform 9 11 ± 0.6 10 ± 0.6 10 ± 0.6 11 ± 0.6 12 ± 0.6 9 ± 0.6
Acetone 12 ± 0.6 10 ± 0.6 11 ± 0.6 10 ± 0.6 10 ± 0.6 12 ± 1 9 ± 0.6
Hexane 13 ± 0.6 10 ± 0.6 10 ± 0.6 9 ± 0.6 9 ± 0.6
Hypericum alpestre Aerial part Water 11 ± 0.6
Methanol 10 ± 0.6 11 ± 0.6 18 ± 0.6 10 ± 0.6
Chloroform 13 ± 0.6 12 ± 0.6 23 ± 1
Acetone 15 ± 0.6 13 ± 0.6 21 ± 0.6 10 ± 0.6 9 ± 0.6
Hexane 17 ± 0.6 16 ± 0.6 21 ± 0.6
Lilium armenum Stalk with leaf Water 10 ± 0.6
Methanol 9 ± 0.6 13 ± 0.6
Chloroform 9 ± 0.6 10 ± 0.6
Acetone 10 ± 0.6 9 11 ± 0.6
Hexane 9 ± 0.6 12 ± 0.6
Lilium armenum Bulb Water 9 ± 0.6
Methanol 9 ± 0.6 9 ± 0.6 11 ± 0.6 9 ± 0.6
Chloroform 9 ± 0.6 13 ± 0.6 9 ± 0.6
Acetone 10 ± 0.6 9 ± 0.6 11 ± 0.6 9 ± 0.6 9 ± 0.6
Hexane 11 ± 0.6 9 ± 0.6
Rumex obtusifolius Leaf Water
Methanol 9 ± 0.6 10 ± 0.6 14 ± 0.6
Chloroform 11 ± 0.6 10 ± 0.6 10 ± 0.6 9 ± 0.6
Acetone 11 ± 0.6 12 ± 0.6 10 ± 0.6 12 ± 0.6
Hexane 9 ± 0.6 11 ± 0.6 9 ± 0.6
Rumex obtusifolius Root Water 11 ± 0.6
Methanol 10 ± 0.6 10 ± 0.6 9 ± 0.6
Chloroform 11 ± 0.6 10 ± 0.6 9 ± 0.6 12 ± 0.6 9 ± 0.6
Acetone 10 ± 0.6 9 ± 0.6 12 ± 0.6 13 ± 0.6 9 ± 0.6
Hexane 9 ± 0.6 12 ± 0.6
Rumex obtusifolius Inflorescence Water
Methanol 9 ± 0.6 9 ± 0.6 10 ± 0.6
Chloroform 9 ± 0.6 9 ± 0.6 9 ± 0.6
Acetone 11 ± 0.6 11 ± 0.6 9 ± 0.6 10 ± 0.6 9 ± 0.6 9 ± 0.6
Hexane 9 ± 0.6 9 ± 0.6 10 ± 0.6
Rumex obtusifolius Seed Water 9 ± 0.6 10 ± 0.6
Methanol 12 ± 0.6 11 ± 0.6 10 ± 0.6 11 ± 0.6 12 ± 0.6 10 ± 0.6
Chloroform 9 ± 0.6 9 ± 0.6
Acetone 12 ± 0.6 12 ± 0.6 10 ± 0.6 10 ± 0.6 12 ± 0.6 10 ± 0.6
Hexane 9 ± 0.6 9 ± 0.6 10 ± 0.6
Sanguisorba obtusifolius Aerial part Water 10 ± 0.6 9 ± 0.6
Methanol 12 ± 0.6 11 ± 0.6 10 ± 0.6 10 ± 0.6 12 ± 0.6 9 ± 0.6 10 ± 0.6
Chloroform 10 ± 0.6 9 ± 0.6 10 ± 0.6 12 ± 0.6 11 ± 0.6
Acetone 13 ± 0.6 13 ± 0.6 12 ± 1 12 ± 0.6 11 ± 0.6 10 ± 0.6 10 ± 0.6
Hexane 11 ± 0.6 10 ± 0.6 10 ± 0.6 9 ± 0.6 10 ± 0.6 9 ± 0.6
Sanguisorba officinalis Root Water
Methanol 10 ± 0.6 10 ± 0.6 10 ± 0.6 10 ± 0.6 10 ± 0.6
Chloroform 10 ± 0.6 11 ± 0.6
Acetone 10 ± 0.6 10 ± 0.6 10 ± 0.6 10 ± 0.6 10 ± 0.6 10 ± 0.6
Hexane 10 ± 0.6
  PCb   20 ± 0.6 30 ± 1 28 ± 1 19 ± 0.6 23 ± 0.6 24 ± 0.6 23 ± 0.6
  1. aUsed test strains: Escherichia coli WKPM-M17 (EC), Pseudomonas aeruginosa GRP3 (VKPH B-82–5) (PA), Bacillus subtilis WT-A1 (BS), Salmonella typhimurium WDCM 1754 (ST), Staphylococcus aureus WDCM 5233 (SA), Candida albicans 174 (CA), Candida guilliermondii HP-17 (CG)
  2. bPC – positive control (gentamicin (10 μg ml−1) (for bacteria), nystatin 20 μg ml−1 (for yeasts))
  3. All experiments were independently repeated three times. Average means with standard deviations are represented. Standard deviations were calculated with GraphPad Prism 5.03 (GraphPad Software, Inc.; USA) software