Abstract:By optimizing the detection parameters of the photostimulated luminescence（PSL）irradiation food detector，an irradiation detection method for solid drinks and tabletting candy containing medicinal and edible homologous compounds was established，which was applied to the screening of commercial samples.The results showed that the PSL value increased with increasing pulse count and light source irradiance，but decreased with increasing pulse time.When the pulse count was 30，the pulse time was 0.2 s and the light source irradiance was 17 mW/cm2，the PSL value reached the peak level. When different proportions of the irradiated sample powder were mixed into the non-irradiated sample，the sample with a mixing proportion as low as 1% can be correctly identified，while the correct rate in the blind sample test was 100%. Moreover，the stability test showed that a storage period for 6 months had no effect on the qualitative determination of the samples.Among the 36 batches of commercial samples，12 batches of samples were positive.