Absrtact: This paper introduces the application of microwave in food processing, so that readers can understand that microwave drying equipment can bring convenience and environmental protection to human beings.
Key words: microwave heating; microwave sterilization; microwave drying of food; safety
Microwave heating can be said to be a by-product of the development of radar for national defense and communications during World War II. Shortly after the war, Spencer of Raytheon Corporation, USA, won the first patent for microwave heating methods for discovering that the heat emitted by radar antennas can heat food. The first commercial and domestic microwave ovens came on the market.
Microwave heating is a kind of integral heating, which is based on the direct interaction between microwave and food. Since water is the main component of food, water molecules and other heated media consist of many molecules (dipoles) with positive charges at one end and negative charges at the other.
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