Application of microwave drying technology in food industry (2)

 Microwave combined with hot air drying of tomato, grape, potato chips, carrots and other vegetable products can improve the quality of products, good rehydration and low shrinkage.

 Microwave puffing and drying of food powder, such as beans, cereals and potatoes, etc., were α - crystallized with water, and then mixed with quantitative food additives for pre drying, and then the products were rapidly dried by microwave. Protein based raw materials are mixed with starch fortifier, salt, seasoning and expanding agent, stirred, molded, pre dried, and then heated by microwave. The heated food will produce carbon dioxide and steam, thus obtaining soft and convenient food.

Microwave cooking and processing of meat. Both Galanz and LG microwave ovens provide microwave oven recipes. According to the recipes, meat, seafood and poultry can be processed to make various kinds of delicious food. The average energy saving is about 60%. The bone can reflect the microwave. Therefore, the meat is easier to be cooked, and is not limited by the size and shape of meat pieces.

 Microwave and infrared wave combined baking, want to eat the food inside tender and coke outside, can be cooked with microwave first, and then baked with infrared ray, such as mushroom roast chicken, roast duck, roast pig, etc.

Microwave sterilization and preservation of food in the microwave field, the polar groups of various polymers of microorganisms produce intense rotation and vibration, which makes proteins and nucleic acids mutate, thus killing bacteria. In general, mold, yeast and bacteria can be killed when heated to 70 ~ 80 ℃, and the purpose of sterilization can be achieved if microwave is used for 1 min. For mold spores, such as Penicillium spores, they should be sterilized at 68 ~ 71 ℃ for 20 minutes before they can be killed. However, satisfactory results can be obtained by microwave at 68 ~ 71 ℃ for 2 minutes. For example, microwave is used to sterilize, mould proof and keep fresh of "moon cake", and good results have been achieved, and the imported "preservative" is no longer needed. Good results have been achieved in the drying and sterilization of soybean powder, chicken essence and sweet potato.