Full
Outline
To investigate the residues of 6 kinds of quinolone antibiotics in freshwater fish and shrimp sold in Suzhou Area and assess the dietary exposure risk.
A total of 97 freshwater fish and shrimp samples were randomly collected from the Suzhou market in 2025. The residue levels of 6 kinds of quinolone antibiotics were determined by solid-phase extraction coupled with ultra performance liquid chromatography-tandem mass spectrometry. The exposure risk of quinolone antibiotics in freshwater fish and shrimp was evaluated by the index of food safety.
The overall detection rate of quinolone antibiotics in the 97 samples was 54.6%(53/97), and the exceedance rate was 2.06% (2/97). Enrofloxacin had the highest detection rate at 54.6% (53/97),followed by ciprofloxacin with the exceedance rate of 14.4% (14/97). The content range of enrofloxacin was 0.5-175.8 μg/kg, and that of ciprofloxacin was 0.4–48.0 μg/kg. Ofloxacin, pefloxacin, norfloxacin and lomefloxacin were not detected in any of the samples. The index of food safety for quinolone antibiotics ranged from 0.0023 to 0.0038, which was far below 1.
In this study, the quinolone antibiotics detected in freshwater fish and shrimp sold in Suzhou Area were mainly enrofloxacin and ciprofloxacin. The health risk posed by the 6 kinds of quinolone antibiotics to humans is at a safe level. However, the exposure risk for children and the elderly is higher than that for adults, indicating that enhanced supervision is needed. This study also provides a data reference for aquatic product quality assessment and the revision of food safety standards.
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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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