关键词: 水产品, 甲醛, 食品安全, 风险评估, aquatic products, formaldehyde, food safety, risk assessment

Abstract: This study aimed to investigate formaldehyde residues of major fresh aquatic products consumed in Yueqing City, and evaluate the health risk of formaldehyde in acute and chronic dietary exposure, which could provide scientific advice to consumers and regulators. Formaldehyde residue of 9 types (238 batches) aquatic products including clam (Mactra chinensis), muddy (Tegillarca granosa Linnaeus), oyster (Oystrea rivularis), constricta (Sinonovacula constricta), mantis shrimp (Oratosquilla amikdo), blue crab (Scylla paramamosain), carp (Carassius auratus), dragon fish (Harpodon Nehereus), and squid (Sepia esculenta) marketed in Yueqing City were determined. Combined with the amount of aquatic product intake obtained from questionnaire survey, dietary exposure level and margin of safety (MOS) of formaldehyde were calculated, acute and chronic dietary exposure risks of formaldehyde were further evaluated. The results showed that the minimum, average, and maximum residues of formaldehyde for these aquatic products were 0 (not detected), 18.51, and 351.75 mg/kg, respectively. Significant difference of formaldehyde residue in different aquatic products was observed, blue crabs and squid showed the lowest formaldehyde residue, while mantis shrimp and dragon fish showed the highest, especially the latter had a maximum of 351.75 mg/kg. The results of formaldehyde risk assessment on acute dietary exposure indicated that blue crab was of the lowest risk (MOS 154.3) and dragon fish the highest (MOS 2.5), while the results of chronic risk assessment suggested that clam was of the lowest risk (MOS 753.3) and dragon fish of the highest risk (MOS 11.8). These findings indicates that formaldehyde residue of major aquatic products consumed in Yueqing City is acceptable for acute or chronic dietary exposure. However, it should be noted that formaldehyde residue in some types of aquatic products, such as dragon fish are much higher than the average. It is recommended that consumers should not consume large amounts of these products for a short time.