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Objective To investigate the distribution of Escherichia coli (E. coli) contamination in fruits sold in some cities and counties of Hainan Province, and to analyze the isolates for drug resistance, aiming at identifying the risk of foodborne E. coli and evaluating its potential impact on food safety. Methods Isolation and identification of E. coli in samples and detection of drug resistance of E. coli isolates by VITEK 2 method. Results A total of 51 strains of E. coli were isolated from 240 fruit samples, with a detection rate of 21.3%. 19 strains of E. coli were drug-resistant, with a resistance rate of 37.3%, including 7 single-resistant and 12 multi-resistant strains. Comparative analysis of the distribution of E. coli in different regions and fruits showed that fruit species and sampling locations had a significant effect on the distribution of Escherichia coli. Conclusion The distribution of E. coli in commercially available fruits is widespread and drug-resistant, the detection of pathogenic bacteria distribution and drug resistance in fruits should be strengthened, and this study also provides an important reference basis for food safety management and monitoring.
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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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