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Table 1 Antimicrobial activities of extracts, isolated compounds and reference antimicrobial drugs

From: Antimicrobial activities of flavonoid glycosides from Graptophyllum grandulosum and their mechanism of antibacterial action

Extracts/Compounds Inhibition parameters V. cholerae SG24 (1) V. cholerae CO6 V. cholerae NB2 V. cholerae PC2 S. aureus ATCC 25923 C. albicans ATCC 9002 C. neoformans IP95026
MeOH extract MIC 512 512 256 512 256 > 2048 > 2048
MMC 512 512 512 1024 512 / /
MMC/MIC 1 1 2 2 2 / /
n-BuOH extract MIC 256 256 128 128 128 2048 2048
MMC 256 256 128 256 128 > 2048 > 2048
MMC/MIC 1 1 1 2 1 / /
EtOAc extract MIC 64 128 64 64 64 1024 512
MMC 128 128 64 64 64 1024 1024
MMC/MIC 2 1 1 1 1 1 2
 1 MIC 16 8 8 8 4 32 8
MMC 16 8 16 8 8 64 8
MMC/MIC 1 1 2 1 2 2 1
 2 MIC 16 16 8 8 4 64 16
MMC 32 16 16 8 8 64 32
MMC/MIC 2 1 2 1 2 1 2
 3 MIC 32 64 32 32 8 32 16
MMC 64 128 32 64 16 32 16
MMC/MIC 2 2 1 2 2 1 1
 4 MIC 8 8 8 8 4 8 4
MMC 16 8 8 8 4 8 8
MMC/MIC 2 1 1 1 1 1 2
 5 MIC 32 16 16 16 8 64 32
MMC 32 16 16 16 8 128 64
MMC/MIC 1 1 1 1 1 2 2
Refa MIC 32 4 16 16 0.5 0.5 0.25
MBC 32 4 16 16 0.5 0.5 0.25
MBC/MIC 1 1 1 1 1 1 1
  1. /: not determined; MIC Minimum Inhibitory Concentration, MMC Minimum Microbicidal Concentration; the MIC and MMC were measured in μg/mL; a: amphotericin B for yeasts and ciprofloxacin for bacteria