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Table 2 Well diffusion assay of different C. calcitrapa extracts

From: New perspectives of purple starthistle (Centaurea calcitrapa) leaf extracts: phytochemical analysis, cytotoxicity and antimicrobial activity

Tested microorganisms MeOH EtOH EtOAC Me2CO DCM:MeOH Antibiotic/
Mycotic
Candida albicans ATCC 10231 13 ± 1.15
Enterococcus faecalis ATCC 29212 13 ± 0.29 9 ± 0.00 13.25 ± 0.14
Escherichia coli ATCC 25922 15.5 ± 0.29 12.25 ± 0.14 14 ± 0.00 12.5 ± 0.29 13 ± 0.00
Listeria monocytogenes 13.17 ± 0.17 18.5 ± 0.29 9.25 ± 0.14 17 ± 0.00
Methicillin resistant S. aureus ATCC 33591 21 ± 0.00 12.5 ± 0.29 20 ± 0.00 14 ± 0.58 12.5 ± 0.29 16 ± 1.15
Staphylococcus aureus ATCC 25923 16.17 ± 0.17 13.5 ± 0.29 21.17 ± 0.17 12 ± 0.29 13.5 ± 0.29 16.75 ± 0.43
Agrobacterium tumefaciens 21.83 ± 0.17 21 ± 0.29 28.5 ± 0.29 16.17 ± 0.17 14 ± 0.00
Erwinia amylovora NCPPB 683 24.5 ± 0.29 20.5 ± 0.87 26.5 ± 1.44 20.5 ± 0.29 23 ± 0.29
Pseudomonas syringae pv. aptata P16 10.67 ± 0.33 9.83 ± 0.17 10.75 ± 1.01 11.33 ± 0.44 12.5 ± 0.87
Pseudomonas syringae pv. aptata P29 16 ± 0.58 14 ± 0.58 24.75 ± 0.14 19 ± 0.00 20 ± 0.58
Pseudomonas syringae pv. aptata P49 13.75 ± 0.43 11.5 ± 0.29 21 ± 0.00 12.5 ± 0.00 16.5 ± 0.29
Pseudomonas syringae pv. syringae GSPB 1142 19.75 ± 0.14 21 ± 0.00 30.5 ± 0.29 24.25 ± 0.43 27 ± 0.00
Xanthomonas arboricola pv. juglandis 320
Xanthomonas arboricola pv. juglandis 321
Xanthomonas campestris pv. campestris NCPPB 583 27 ± 0.00 22 ± 0.00 30 ± 0.00 27.25 ± 0.14 25.25 ± 0.14
  1. Antibiotic—vancomycin; Mycotic—nystatin; ─ no activity. The growth inhibition zones are expressed in mm and represented as mean
  2. values of three independent replicates ± SE