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Table 4 Antibacterial activity of the Schiff bases 3.a–f

From: Benzimidazole Schiff base derivatives: synthesis, characterization and antimicrobial activity

Minimum inhibitory concentration MIC (µg/mL)
CompoundsGram positiveGram negative
BSEFSESABCMSECLEMKOEAPMPAKPEC
3.a12525015.631.225025025012562.525025025015.67.8
3.b62.512515.631.212512525012512512512512562.531.2
3.c1251257.831.21251251251251251251251257.87.8
3.d1252507.825025025025025031.21252502507.87.8
3.e1251257.812512562.525012562.51251252507.87.8
3.f1251257.831.212531.212512562.51252501257.87.8
STM1612882563245121281616128166464
NLD16> 5126464325121612882563212864512
  1. STM, streptomycin; NLD, nalidixic acid, BC, Bacillus cereus; BS, B. subtilis; EF, Enterococcus faecalis; MS, Mycobacterium smegmatis; SE, Staphylococcus epidermidis; SA, S. aureus; ECL, Enterobacter cloacae; EC, Escherichia coli; EA, Enterobacter aerogenes; PV, Proteus vulgaris; KO, Klebsiella oxytoca; KP, K. pneumonia; PM, Proteus mirabilis; PA, Pseudomonas aeruginosa