*2.10. Comparison of ELISA and HPLC-FLD Analysis*

Compared with HPLC-FLD, the reliability of the ELISA method was verified by the same positive samples. The positive samples were homogenized and pretreated and detected by ELISA and HPLC-FLD. The HPLC-FLD method was performed according to Godinho et al. [25].

#### **3. Results and Discussion**
