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To investigate and to analyze the residue status of fishery anesthetics in commonly marketed fresh and live freshwater fish and shrimp in Shandong Province.
From 2021 to 2023, a total of 480 freshwater fish and shrimp were collected from 16 prefecture-level cities in Shandong Province, and the four anesthetics of eugenol, MS-222, diazepam, and oxazepam were detected by ultra-high performance liquid chromatography-tandem mass spectrometry (UPLC-MS/MS).
Among the four anesthetics, eugenol had the highest detection rate of 31.9% (153/480), followed by diazepam and oxazepam with detection rates of 6.7% (32/480) and 3.1% (15/480), and MS-222 was not detected. Eugenol had the highest detection rate and level of detection in grass carp, diazepam was detected only in fish and oxazepam was detected only in shrimp.
The primary fishery anesthetic detected in commonly marketed fresh and live freshwater fish and shrimp in Shandong Province is eugenol, with overall low residue levels.
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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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