ISOLATION AND IDENTIFICATION OF BACTERIA FROM CURRENCY NOTES
Abstract
The aim of this research is to enumerate and identify bacteria in naira notes and
determine their susceptibility to antibiotics. A total of 160 samples consisting of
twenty (20) pieces each of ₦1,000, ₦500, ₦200, ₦100, ₦50, ₦20, ₦10, and ₦5
were randomly collected from tricycle riders, meat sellers, and vegetable sellers
within Oghara, Delta State. Collected samples were analyzed using standard
microbiological procedures. Antibiotic susceptibility test was done using KirbyBauer disc diffusion technique. Result shows mean total viable bacteria count
(TVBC) ranged from 6.0×106
cfu/ml to 1.09×107
cfu/ ml. Two bacterial genera;
Bacillus sp and Staphylococcus aureus were the bacteria isolated from the naira
notes. Streptomyces has the highest zone of inhibition (32.0 mm) on Staphylococcus
aureus while Erythromycin recorded the least inhibition (8.0 mm). Streptomyces has
the highest zone of inhibition (30.0 mm) on Bacillus species while gentamicin
recorded the least inhibition (5.0 mm). The bacteria isolated from the naira notes are
susceptible to some of the antibiotics and resistant to others and can be implicated in
human infections.
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