Abstract
The microbiological quality of some herbal medicinal products available in Dhaka, Bangladesh was evaluated. In the studied samples, the total aerobic bacterial count (TABC) varied from 6.20 × 102 to 2.97 × 105 cfu /ml, total yeast and mold count ranged from 0 to 1.80 × 104 cfu /ml, total coliform count varied from 0 to 2.80×103 cfu/ml and total staphylococcal count (TSC) ranged from 0 to 2.30 × 104 cfu/ml. A strong positive correlation (r = 0.849) was observed between TABC and TSC. Out of 24 herbal medicinal samples examined, 5 (20.83%) did not comply with the microbiological criteria set by internationally recognized organizations. The study revealed that 100% of the Escherichia coli isolates were resistant to amoxicillin and penicillin G, 85.71% were resistant to nitrofurantoin and 71.43% were resistant to ceftriaxone and cefuroxime: and 57.14% were resistant to erythromycin. Among the Staphylococcus aureus isolates tested, 100% were resistant to amoxicillin, nalidixic acid and Penicillin G; whereas 33.33% showed resistance to cefuroxime.
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