PJB-2017-752
EVALUATION AND COMPARISON OF ANTIMICROBIAL ACTIVITY OF COMMERCIALLY AVAILABLE TEAS AQUEOUS EXTRACT AGAINST S. AUREUS AND E. COLI
ROHAN ALI
Abstract
In this study, we evaluate and compare the antimicrobial activity of different commercially available teas aqueous extract against most common, potentially pathogenic, clinical isolates of gram-positive S. aureus and gram-negative E. coli, by a modified broth micro-dilution method. We analyze that the green tea aqueous extract is best against both the pathogenic bacteria, inhibiting their growth at 6.2 mg/ml. while black tea aqueous extract is more efficient against E. coli than S. aureus, with the MIC at 6.2 mg/ml and 12.5 mg/ml respectively. Therefore, the present study encourages the preferable use and study of commercially available teas in folk medicines and as beverages in the limited quantity.
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