This study showed that AFM1 level in dairy products is affected by season and product type. The data indicated that the highest level of AFM1 was detected in the cheese and cream samples which prepared at autumn and winter seasons. Moreover, the lowest concentration of AFM1 was found in yoghurt samples in all seasons.
To evaluate the accuracy of the analytical method, we estimated the LOD, LOQ and recovery percentages for each single product. The values for LOD and LOQ were not different for dairy products, however, our results showed various recovery percentages for different products, suggesting the important role of food matrix in recovery of certain compound. The effect of various matrixes in the recovery of certain compounds has been well documented (9).