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Automation of Antimicrobial Activity Screening



Samuel P. Forry, Meggan C. Madonna, Daneli Lopez-Perez, Nancy J. Lin, Madeleine D. Pasco


ABSTRACT: Manual and automated methods were compared for routine screening of compounds for antimicrobial activity. Automation generally accelerated assays and required less user intervention while producing comparable results. Automated protocols were validated for planktonic, biofilm, and agar cultures of the oral microbe Streptococcus mutans that is commonly associated with dental caries. Toxicity assays for the known antimicrobial compound cetylpyridinium chloride (CPC) were validated against planktonic, biofilm forming, and 24 h biofilm culture conditions, and several commonly reported toxicity/antimicrobial activity measures were evaluated: the 50% inhibition concentration (IC50), the minimum inhibitory concentration (MIC), and the minimum bactericidal concentration (MBC). Using automated methods, three halide salts of cetylpyridinium (CPC, CPB, CPI) were rapidly screened with no detectable effect on antimicrobial activity.
Journal of Microbial Biotechnology


Antimicrobial activity, automation, biofilm, toxicity, microbial growth


Forry, S. , Madonna, M. , Lopez-Perez, D. , Lin, N. and Pasco, M. (2016), Automation of Antimicrobial Activity Screening, Journal of Microbial Biotechnology, [online], (Accessed June 12, 2024)


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Created March 12, 2016, Updated November 10, 2018