한국에서 통용되고 있는 지폐에서의 미생물 오염 분석 = Analysis of Microbiological Contamination on Korean Currency of Bank Notes in Current Use

다국어 초록 (Multilingual Abstract)

The purpose of this work was to investigate the microbiological distribution and contamination from korean currency that is circulated generally among various kinds of people. Fifty 1,000-won bills were collected by seasons and regions for 18 months. supernatants derived from bills treated by ultrasonicator with .0.8% saline were inoculated and incubated on various selective media such as mannitol salt agar, potato dextrose agar, plate count agar, bismuth sulfite glucose glycine yeast extract agar, luria-Bertani agar. As the results, various kinds of bacteria and fungi including Staphylococcus aureus, Staphyolcoccus epidermidis, Streptococcus mitis, Streptococcus salivarius, Escherichia coli, Enterobacter sp., Salmonella sp., Pseudomonas sp., Candidasp. from 1,000-won bills grew on the solid media. Bacterial contamination was higher in spring and summer compared to winter, whereas fungal contaminatioj was predominated in winter. Especially, 1,000-won bills collected in fish markets and korean traditional markets were heavily contaminated by E. coli, staphylococcus aureus, Pseudomonas sp. Streptococcus sp.,Salmonella sp., and -hemolytic Bacillus. Similar results were obtained from 5,000-won bills and 10,000-won bills as well. In consequence, it was proven that korean currency of bank notes in current use was significantly contaminated by many pathogenic microorganisms.