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To assess the content of heavy metals lead and cadmium in mantis shrimp and Chinese mitten crab sold in Suzhou, as well as the dietary exposure and health risks associated with passive intake of these metals through consumption of these two seafood products.
An in vitro experiment was conducted to simulate the human digestive process, measuring the levels of lead and cadmium in simulated gastric and intestinal digestion extracts, and calculating their bio accessibility. The dietary exposure and health risks of lead and cadmium in the two seafood products were evaluated using exposure boundary ratios, non-carcinogenic hazard coefficients, and target carcinogenic risk indices.
Among the tested seafood products, lead levels were within acceptable limits, while cadmium exceeded the limit in four samples. After treatment with simulated gastric digestion fluid, the bio accessibility data for cadmium and lead were 59.1% to 87.5% and 19.9% to 46.0%, respectively. Following treatment with simulated intestinal digestion fluid, the bio accessibility data for cadmium and lead were 20.5% to 45.1% and 18.1% to 38.2%,respectively. The dietary exposure limits for lead and cadmium in both seafood products were greater than 1.8, the noncarcinogenic hazard coefficients were below the safety benchmark of 1.0, and the target carcinogenic risk was no greater than 5.00×10-5 per year.
The dietary exposure risk of lead and cadmium in the two seafood products does not have a significant impact on human health, and both non-carcinogenic and target carcinogenic risks are within acceptable limits.
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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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