Full
Outline
To understand the contamination of pathogenic bacteria in prepared meat products in Sichuan Province and provide scientific basis for the prevention of foodborne diseases.
From 2020 to 2024（excluding 2021）, 756 samples of prepared meat products were collected from farmers’ markets, supermarkets, and retail stores etc, in 11 cities. The detection of Salmonella, Listeria monocytogenes, Staphylococcus aureus, Yersinia enterocolitica, and diarrheagenic Escherichia coli was carried out, according to the national food safety standard method.
The detection rate of Listeria monocytogenes was the highest, at 22.75%, followed by Salmonella, with a detection rate of 7.67%. The detection rates of Yersinia enterocolitica, Staphylococcus aureus, and diarrheagenic Escherichia coli were 3.47%, 1.82%, and 1.66%, respectively. The detection rate of Salmonella in chilled prepared meat（11.29%）was higher than that in frozen prepared meat（4.33%）, and the detection rate in bulk prepared meat（9.35%）was higher than that in prepackaged prepared meat（3.88%）. The main types of Salmonella were Salmonella enteritidis and Salmonella typhimurium, accounting for 28.81% and 25.42%, respectively. Salmonella enteritidis was mainly found in poultry meat（66.67%）, while Salmonella typhimurium was mainly found in livestock meat（37.14%）. The resistance rates of Salmonella to tetracycline and ampicillin were relatively high, at 50.00% and 47.50%, respectively.
Prepared meat products in Sichuan Province are contaminated by pathogenic bacteria to varying degrees. Targeted monitoring and supervision should be continuously carried out, and food safety publicity should be strengthened.
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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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