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어린이 급식소의 배식용기 표면에 대한ATP (Adenosine Triphosphate) 위생 모니터링 가이드라인 설정

Setting Guidelines for ATP Bioluminescence Hygiene Monitoring of Distribution Trays in Used Children’s Foodservices

대한영양사협회학술지 2020년 26권 4호 p.243 ~ 253
문혜경,
소속 상세정보
문혜경 ( Moon Hye-Kyung ) - Changwon National University Department of Food and Nutrition Interdisciplinary Program in Senior Human Ecology

Abstract


The purpose of this study was to set new guidelines for adenosine triphosphate (ATP) bioluminescence hygiene monitoring of distribution trays at children’s foodservices. Five dietitians visited 223 foodservices (95 institutional, 128 small) to examine whether they adhered to the norms of ‘Keeping distribution tray sanitary by washing/sanitizing’ and ‘Performing food distribution in a clean and appropriate way’. In this visit, dietitians swabbed 100 cm2 area of the distribution trays twice, once for obtaining ATP measurements and the second time for Aerobic Plate Counts (APC) using 3M Petrifilm Plates. Chi-square test and ANOVA were applied using SPSS 23.0 software. SPSS 23.0 was used to conduct graphical and statistical analysis of the raw data of ATP measurements, which were further transformed by a Box-Cox transformation. The mean of APC from all the subjects inspected was 3.8×102±2,102.0 CFU/100 cm2. A total of 208 (93.3%) trays were observed within the acceptable limits of APC (Pass<5.0×102 CFU/100 cm2). APCs taken at institutional foodservices showed significantly lower levels (1.4×102±600.0 CFU/100 cm2, P<0.01) compared to the small foodservices (5.5×102±2,718.7 CFU/100 cm2). No significant differences were observed between the two groups in ATP measurements and in the performance rate of 2 checklist items. As against the 93.3% APC adequacy from the total subjected inspection, total ATP adequacy (Pass≤300 RLU/100 cm2) was only 71.7%. Therefore, more practical guidelines should be prepared for the assessment of the hygiene of distribution trays. In the graphical and statistical analysis, levels below 250 RLU/100 cm2 was considered ‘Pass’, while equal to or greater than 350 RLU/100 cm2 was considered ‘Fail’ for distribution trays.

키워드

ATP hygiene monitoring; aerobic plate count; food contact surface; children’s foodservices

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