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• W2062010090 abstract "어린이집 유아들이 공용으로 사용하는 수건의 미생물 오염도와 분리된 식중독 미생물의 장독소 유전자 및 장독소 생산 특성을 분석하여 어린이집 유아 사용 수건의 위생안전성을 확보하고자 어린이가 손 씻은 후 공용으로 사용하는 수건 22개 (사용 전 7개, 사용 중 15개)를 연구대상으로 하였다. 일반세균수는 평균 6.2 log CFU/100 <TEX>$cm^2$</TEX>로 검출되었고 진균수는 평균 4.1 log CFU/100 <TEX>$cm^2$</TEX>로 검출되었으며 대장균군은 사용 전 수건의 경우 7건 중 4건 (57.1%), 사용 중인 수건의 경우 15건 모두에서 (100%) 검출되었다. 어린이 사용 수건의 미생물 오염도가 높게 나타나 수건의 위생적인 살균 세탁 및 상대습도가 낮은 곳에 보관하는 등의 보관 방법 개선이 필요한 것으로 판단되었다. Salmonella spp.의 경우 실험에 사용된 모든 수건에서 검출되지 않았으나, Staph. aureus는 22건 중 5건 (22.7%), B. cereus는 11건 (50.0%)에서 검출되어 B. cereus 오염이 가장 심각한 것으로 나타났다. Staph. aureus 장독소 유전자와 독소 단백질은 모두 불검출 되었으나 분리 동정된 11균주의 B. cereus 장독소 유전자 실험 결과 hblC, hblD, hblA 유전자가 각각 72.7, 72.7, 54.5% 검출되고 nheA, nheB, nheC 유전자가 각각 81.8, 72.7, 54.5% 검출되었으며 cytK, entFM 장독소 유전자는 각각 45.5, 90.0% 검출되었다. B. cereus 장독소 실험결과 HBL 장독소는 11균주 중 8균주 (72.7%), NHE 장독소는 5균주 (45.5%) 검출되었고 HBL과 NHE 장독소 중 하나 이상을 생산하는 B. cereus 균주는 10균주 (90.9%)로 나타났다. 수건에 오염된 B. cereus 균주의 교차오염에 따른 식중독 위험성이 상존하는 것으로 나타나 개인별 수건 또는 종이 타올 사용을 고려하여야 할 것으로 판단되었다. This study was conducted to evaluate the microbiological contamination on commonly used hand towels in the child care centers and to investigate the toxin gene and toxin production ability of food-borne pathogens. A total of 22 commonly used hand towels including 7 for before use and 15 for during use were tested. The average number of total aerobic bacteria and fungi were 6.2 log CFU/100 <TEX>$cm^2$</TEX> and 4.1 log CFU/100 <TEX>$cm^2$</TEX>. Coliform bacteria were detected in 4 out of 7 before used towels (57.1%) and all of during used towels (100%). These results showed that the sanitary conditions of hand towels in the child care centers should be improved promptly. Among the pathogenic bacteria, Staph. aureus and B. cereus without Salmonella spp. were detected in 5 (22.7%) and 11 (50.0%) out of 22 hand towels. All of Staphy. aureus isolated in this study did not possess any toxin genes and did not produce enterotoxin. The detection rate of hblC, hblD, and hblA toxin genes in B. cereus was 72.7, 72.7, and 54.5% respectively. The possession rate of nheA, nheB, and nheC toxin genes showed 81.8, 72.7, and 54.5% respectively. The cytK and entFM toxin genes were presented at 45.5 and 90.0% in B. cereus. The HBL was detected in 8 out of 11 B. cereus isolates (72.7%) and 5 B. cereus isolates produced NHE (45.5%). Ten out of eleven B. cereus isolates (90.9%) produced one or more enterotoxin such as HBL and NHE. From the results, using a private hand towel or paper towel is required to prevent the cross-contamination between commonly used hand towel and children's hands in the child care center." @default.
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• W2062010090 date "2013-06-30" @default.
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• W2062010090 title "Prevalence and Toxin Characteristics of Microorganism on Hand Towels Using for Children in Child Care Center" @default.
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