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Objective To use coleslaw at the retail-to-consumption level as a source of contamination with Staphylococcus aureus, assess the health risk posed to residents of Jilin Province and identify the key contributing factors. Methods Based on the monitoring data of Staphylococcus aureus in coleslaw in Jilin Province from 2011 to 2019, combined with the data of residents’ coleslaw consumption and temperature, a prediction model of Staphylococcus aureus growth was established. The results were analysed and Monte Carlo simulated using @Risk8.0 software, and a quantitative risk assessment of Staphylococcus aureus in commercially available coleslaw in Jilin Province was carried out in 4 parts: Hazard identification, exposure assessment, hazard characterization and risk analysis. Results The data statistics showed that the initial contamination rate of Staphylococcus aureus in coleslaw was 3%, and the average contamination was -2.37 log10CFU/g, with a 95% confidence interval of (-5.88, 1.27) log10CFU/g. The assessment results showed that the probability of triggering Staphylococcus aureus intoxication was 0.1%, and the number of cases of illness that could be caused by Staphylococcus aureus was 154500 cases per year. Conclusion The initial level of Staphylococcus aureus contamination in coleslaw is most important in causing the risk of Staphylococcus aureus infection, follow by storage temperature. Keeping the source ingredients, preparation environment clean and hygienic, and having good refrigerator use habits are important measures to reduce the risk of developing Staphylococcus aureus infections in coleslaw.
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| 科 Family | 属数 Number of genus | 种数 Number of species | 占总种数比例 Percentage of total species (%) | 属 Genus | 种数 Number of species | 占总种数比例 Percentage of total species (%) |
|---|---|---|---|---|---|---|
| 鹅膏菌科Amanitaceae | 2 | 11 | 5.26 | 鹅膏菌属 Amanita | 10 | 4.78 |
| 小菇科 Mycenaceae | 2 | 12 | 5.74 | 丝盖伞属 Inocybe | 5 | 2.39 |
| 多孔菌科 Polyporaceae | 8 | 14 | 6.70 | 蜡蘑属 Laccaria | 5 | 2.39 |
| 红菇科 Russulaceae | 3 | 23 | 11.00 | 小皮伞属 Marasmius | 6 | 2.87 |
| 小菇属 Mycena | 11 | 5.26 | ||||
| 光柄菇属 Pluteus | 5 | 2.39 | ||||
| 红菇属 Russula | 17 | 8.13 | ||||
| 栓菌属 Trametes | 5 | 2.39 |
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