اثرگرمادهی امواج مایکروویو بر کنترل شپشه دندانه دار و تعیین انرژی مصرفی آن در محصول گردو

Insects with quantitative, qualitative and health losses to stored products cause heavy damages in such products. Controlling warehouse pests is one of the important stages of product maintenance, and microwave heating is an environmentally friendly way to control warehouse pests. In this research, microwave heating was used to control an important pest of stored walnuts. 70 gram samples of walnut kernels to Oryzaephilus surinamensis L were infected. These samples were exposed to microwave radiation with a frequency of 2450 MHz at powers of 450, 700 and 900 watts with times of 20, 30, 40 and 50 seconds. The results showed that in all experiments, mortality increases with increasing time of microwave treatment. Also, a direct relationship between death rate and microwave power levels was observed. The complete loss of pests was observed at 900 watts power and 50 seconds time. The highest mortality rate for O. surinamensis was at 900 watts power, for which The mortality rate for it in 20, 30, 40 and 50 seconds was recorded as 56.67, 72.63, 91.53 and 100% respectively. Also, the results showed that the percentage of deaths will be possible as a result of consuming more energy. Recent studies have shown that microwave operation is a potential way to replace smoking materials and chemical pesticides due to selective heating, absence of pollution in the environment, achieving quality maintenance and minimizing energy. According to the results of this research and the unique advantages of the microwave treatment method, this method can be one of the effective methods of fighting pests because it is able to cause losses in different growth stages in the shortest time and without any harmful and destructive chemical residues on the environment and food products.