Many flour producers are obsessed by the insects and larvae like weevil. Therefore, we keep looking an effective solution which can eliminate weevils in the flour and rice in order to keep flour longer shelf life. Although chemical fumigation is being applied widely in stored food grains, but there are some problems about regulatory issues, insect resistance, and environmental concerns demand technically effective and environmentally sound quarantine methods. Recent studies have indicated that microwave treatment is a potential means of replacing other techniques because of selective heating, pollution free environment, equivalent or better quality retention, energy minimization, and so forth

The use of microwaves for disinfestation is based on the dielectric heating effect produced in grain, which is a relatively poor conductor of electricity. An attractive feature of the insect control using the microwave energy is that the insects are heated at a faster rate than the product they infest because of high moisture content of insect. Microwave selecting heating features which means the insect control using the microwave energy is that the insects are heated at a faster rate than the product they infest because of high moisture content of insects. So, it is possible to heat the insects to a lethal temperature because of their high moisture content while leaving the drier foodstuff unaffected or slightly warm. On the other hand, microwave power and microwave heating time have been identified as two major factors to provide 100% insect mortality. The optimized microwave power and exposure time were based on insect mortality, color, and antinutrient factor with the value of power and exposure time of 800W and 80s, respectively. MAX Industrial Microwave would offer the relative time and processing temperature for the industrial tunnel conveyor microwave machine

Moreover, the major advantage of industrial microwave heating is that it interacts directly with food grains and significantly reduce the amount of time required for food grain to reach the lethal temperature for insects as compared with conventional heating method.

There are also some concerns about microwave might destroy the food grain protein. There were also reports by several researchers that no significant difference in the quality of grain protein, flour protein, flour yield, and loaf volume of sample was found when treated with microwave energy at which 100% mortality was obtained.

Feasibility of microwave disinfestation of insect pests has been used for wheat, maize, flour weevils, rice, buckwheat and other food grains. It can also avoid flour lumps after microwave heating process.