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Table 3 Minimum inhibitory (MIC) and minimum bactericidal concentration (MBC) of C. calcitrapa extracts

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

Bacterial strains MeOH EtOH EtOAc Me2CO DCM:MeOH Str Van
MIC
E. coli ATCC 25922 375 200 375 375 4.6 500
MRSA ATCC 33591 15 60 15 7.8 31
S. aureus ATCC 25923 94 125 16 31 62.5 9 1.6
A. tumefaciens 500 750 250 375 250
E. amylovora NCPPB 683 200 375 13 375 150 3 400
P. syringae pv. aptata P29 250 500 100 500 250 1.5
P. syringae pv. syringae GSPB 1142 200 200 13 150 100 3
X. campestris pv. campestris NCPPB 583 200 500 25 150 25 12.5 12.5
  MBC
E. coli ATCC 25922 500 250 500 500 6 100
MRSA ATCC 33591 1000 1000 500 500
S. aureus ATCC 25923 125 250 125 125 250 25 3
A. tumefaciens 1000 1000 500 1000 1000
E. amylovora NCPPB 683 500 500 25 500 200 6
P. syringae pv. aptata P29 500 500 6
P. syringae pv. syringae GSPB 1142 500 500 25 200 200 6
X. campestris pv. campestris NCPPB 583 500 150 500 500 25 25
  1. Str—streptomycin; Van—vancomycin. (–) ─ not detected in the range of tested concentrations. Values are expressed in µg/mL