Application Technology of Microwave Sterilization Equipment for Bagged Food

- May 06, 2019 -

The microwave sterilization equipment for bagged food has obvious advantages in the sterilization and preservation of bagged food, such as penetrating heating, short time, no damage to nutrients and low temperature sterilization. Using 2450 MHz microwave equipment, the bactericidal rate of cooked food such as smoked fish, fork burning, sparrows and meat floss in bags was more than 95%. Practice shows that microwave sterilization can be widely used in various cooked foods (fish, meat, soybean products, pickles, etc.) and beverages.

In recent years, the market demand for dried fish fillets has been increasing, and some products are exported to foreign countries. However, for a long time, due to the lack of effective sterilization methods, the products have mildewed. Using 2450 MHz 10 kW microwave treatment equipment, not only has the function of heating and drying, but also has the effect of sterilizing and killing enzymes. It has been widely used in dried fish fillets and cooked baking, with energy saving effect of more than 50%. Fish fillets are crisp and delicious.

For bagged or bottled food, microwave sterilization can penetrate through the packaging and packaging of food and medicines for drying and sterilization by virtue of its strong penetrating power, while packaging materials such as PET plastics, glass, paper, ceramics and so on, because they do not absorb microwave, they will not heat, so the product is more hygienic and avoid secondary pollution. However, it should be noted that because metal and aluminium foil can reflect microwave without penetration, so packaging materials can not use metal materials or contain metal components (such as plastic film with aluminium foil). Secondly, when microwave is used to treat bagged or bottled medicines and food, the air pressure will rise because of the heat of the food and medicines in the package. If the air pressure is completely sealed and the air pressure is too high, the air pressure may break through the package. The solutions are as follows:

1. First sterilize with microwave, then seal or cover quickly.

2. After sealing, place it in pressure vessel and sterilize it with microwave.

p>3. Microwave sterilization after vacuum packaging.

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