Determination of biogenic amines in squid and white prawn by high-performance liquid chromatography with postcolumn derivatization.

A simple method was developed for the determination of biogenic amines in aquatic food products using a reverse-phase high-performance liquid chromatography with postcolumn automatic o-phthalaldehyde derivatization and fluorescence detection. The linearity, repeatability, and recovery of the method for seven amines (tyramine, putrescine, cadaverine, histamine, agmatine, spermidine, and spermine) were evaluated. This optimized method was applied to detect biogenic amines in squid and white prawn during refrigerated storage.

[Radioactive seed implantation in treatment of oral and maxillofacial malignancy].

Objective: To treat oral and maxillofacial malignant tumors with radioactive seed implantation and observe the therapeutic results and side effects.

Methods: Thirty-six patients with oral and maxillofacial malignancy were treated by radioactive seeds implanting (operation and seed implantation or seed implantation only). The treatment plans were designed before implanting by treatment plan system (TPS).