Study on Staphylococcus aureus contamination and semi-quantitative risk assessment in raw chicken sold in Ji’nan
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1.Department of Microbiological Laboratory Technology, School of Public Health, Cheeloo College of Medicine, Shandong University, Key Laboratory of Infectious Disease Control and Prevention in Universities of Shandong, Shandong Ji’nan 250012, China;2.Key Laboratory of Food Safety Assessment of Ministry of Health, China National Center for Food Safety Assessment, Beijing 100021, China

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R155

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    Abstract:

    Objective To understand the contamination of Staphylococcus aureus in raw chicken sold in Ji’nan and the carrying of enterotoxin genes in isolated strains, and assess the health risks of raw chicken products to consumers.Methods From March 2021 to November 2021, samples were collected from e-commerce platforms and circulation links such as large supermarkets, farmers’ markets, and meat retail stores in the main densely populated areas of Ji’nan city. The samples were tested according to GB 4789.10—2016 “Food Microbiology Testing Staphylococcus Aureus Test” to identify and detect 5 enterotoxin genes (sea seb sec sed see) of isolates through polymerase chain reaction (PCR). The risk assessment software of risk ranger was used to assess the impact of Staphylococcus aureus in raw chicken sold in Ji’nan on consumer health.Results Among the 180 samples collected, a total of 55 samples detected Staphylococcus aureus, including 16 frozen chicken products from large supermarkets and e-commerce platforms (16/61), 30 frozen chicken products from farmers’ markets and meat retail stores (30/60), and 9 fresh whole chickens (9/55). A total of 9 of the 55 isolates carried at least one classical enterotoxin gene. The semi-quantitative risk assessment results suggested that the risk level of Staphylococcus aureus caused by food poisoning in raw chicken sold in Ji’nan was high risk level, of which the risk value of frozen chicken products from farmers’ markets and meat product retail stores was 53, the risk value of fresh whole chicken was 52, and the risk value of frozen chicken products from large supermarkets and e-commerce platforms was 49.Conclusion The pollution level of Staphylococcus aureus in raw chicken sold in Ji’nan is relatively serious. Based on the risk assessment results, it is recommended that relevant departments strengthen supervision, standardize the transportation and storage conditions of frozen meat products on the market, reduce the risk of bacterial contamination of frozen chicken products, and protect the health of consumers.

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KAN Haopeng, LI Nan, HU Yujie, ZHAO Li, LIU Chang, YANG Zhu, WEN Hongling. Study on Staphylococcus aureus contamination and semi-quantitative risk assessment in raw chicken sold in Ji’nan[J].中国食品卫生杂志,2022,34(5):968-973.

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History
  • Received:July 18,2022
  • Revised:
  • Adopted:
  • Online: December 01,2022
  • Published: