Abstract
SummaryThis study investigated the degradation effect of curcumin‐mediated photodynamic technology (PDT) on polycyclic aromatic hydrocarbons (PAHs) in oysters, and evaluated the safety of PDT‐treated oysters through acute and subacute toxicity experiments. The results demonstrated that curcumin‐mediated PDT could effectively degrade multi‐component PAHs in oysters, the maximum removal efficiency could reach 80.20% (10 μmol L−1 curcumin concentration and 54 J cm−2 light energy density). Acute toxicity experiment revealed PDT‐treated oysters did not cause any mortality and adverse symptoms in mice at an oral dose of 40 g kg−1 BW. Besides, after being treated at the dose of 10 g kg−1 BW for 28 days, the rats showed no obvious abnormal change in the indicators including the body weight, food utilisation, urology, haematology, serum biochemistry, organ index and histopathology. These findings show curcumin‐mediated PDT is a potentially efficacious method to degrade PAHs in oysters, and PDT‐treated oysters have high edible safety.
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