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KMID : 0881720210360010042
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Journal of Food Hygiene and Safety
2021 Volume.36 No. 1 p.42 ~ p.50
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Correlation Analysis of Inspection Results and ATP Bioluminescence Assay for Verification of Hygiene Status at 5 Star Hotels in Korea
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Kim Bo-Ram
Lee Jung-A
Ha Sang-Do
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Abstract
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Along with the rapid growth of the food service industry, food safety requirements and hygiene are increasing in importance in restaurants and hotels. Accordingly, there is a need for quick and practical monitoring techniques to determine hygiene status in the field. In this study, we investigated 5 domestic 5-star hotels specifically, personal hygiene (hands of workers), cooking utensils (knife, cutting board, food storage container, slicing machine blade, ice-maker scoop) and other facilities (refrigerator handle, sink). In addition, we examined the hygiene management status of customer contact points (tongs for buffet, etc.) to derive the correlation between the ATP values as a, a verification method. As a result of our five-hotel survey, we found that cooking utensils and personal hygiene were relatively sanitary compared to other inspection items (cookware 92.2%, personal hygiene 91.4%, facilities and equipment 76.19%, customer contact items 88.6%). According to our ATP-based mothod, kitchen utensils (51 ± 45 RLU/ 25cm2) were relatively clean compared to other with facilities and equipment (167 ± 123 RLU/25cm2). In the present study, we also evaluated the usefulness of the ATP bioluminescence method for monitoring surface hygiene at hotel restaurants. After correlation analysis of surveillance of hygienic status points and ATP assay, most results showed negative and high correlation (-0.64--0.89). Our ATP assay (92 ± 67 RLU/25cm2) of each item after cleaning showed signigicantly reduced results compared to the ATP assay (1020 ± 1254 RLU/25cm2) for normal status, thereby indicating its suitability as a tool to verify the validity of cleaning. By our results, ATP bioluminescence could be used as an effective tool for visual numerical evaluation of invisible contaminants.
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KEYWORD
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ATP bioluminescence, Food safety, Hygiene inspection, Monitoring techniques, Hotel hygiene
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