Advantages of water-based sterilization technology in sterilization of soft-packed foods

Summary:
The water sterilizing pot technology is a kind of sterilizing medium with superheated water. It forms a uniform water film on the surface of the product to complete the heating, heat preservation and cooling process of the product. It has the characteristics of comprehensive, rapid and stable, especially suitable for high temperature soft packaged food. Sterilization.
The shower style autoclave adopts new technology in heating, cooking and sterilizing to spray ultra-hot water on the surface of products homogenously, with the multifunctional, fast and steady characters, it's suitable especially for pouch products sterilization.

Key words: leaching sterilizer, soft bag packaging food Soft bag packaging (soft canned food) research is based in the United States, began in 1940. Nowadays, soft-packed foods have been able to partially replace packaged foods such as metal and glass jars. The soft-packed materials have small thickness, fast heat transfer and short sterilization time, which better preserves the original color, aroma and taste of the food; The packaging material has light density, small volume, space saving and convenient transportation; it has a long shelf life and is convenient to eat, and can utilize the sterilization technology and equipment of metal cans and glass canned foods. However, the packaging materials of soft bag packaging are low in strength. Many enterprises in the secondary sterilization of high-temperature retort pouch foods, although the people, materials, materials and other links have been strictly controlled, but the products produced are still unsatisfactory, the soft bag breakage rate High, “over-burning” and “cold-pointing” phenomena frequently result in low output rates and serious waste of materials.
Nowadays, the sterilization equipment used for secondary sterilization of soft bag foods is mainly intermittent static sterilization equipment, including "steam sterilization pot", "immersion type sterilization machine" and "watering type sterilization pot". "Steam sterilization pot" is a kind of traditional sterilization equipment. Because there is a cold spot in the air in the sterilization process, the temperature distribution is uneven. The sterilization quality is inconsistent. It is necessary to use exhaust measures to discharge a part of the steam into the atmosphere. About 25% of the heating heat source, resulting in a waste of energy, causing noise and pollution to the workshop, is not conducive to the development of the company and society. The “immersion sterilizer” is large in size and complicated in operation, and is mainly used for sterilization of meat cans.
"Watering type sterilization pot" is divided into "side spray" and "top spray". It is a new generation of sterilization equipment. It entered China in the 1990s, and Ningbo Ruituo Sterilization Equipment Co., Ltd. is the first production. A fully automatic watering type sterilization pot" enterprise. The sterilization process is carried out in a plurality of nozzles arranged on both sides or at the top of the sterilizer to spray misty wave-shaped hot water to the surface of the food, and the temperature and cooling rate are rapid, and the product can be comprehensive, rapid and stable. Sterilization is especially suitable for sterilization of high temperature retort pouch foods.
The difference between the water-spray sterilization method and the traditional high-temperature high-pressure sterilization method is:
The "pre-tank precise back pressure control" technology and the "wave-shaped hot water jet" method are adopted. Since the material of the soft bag packaging is generally sensitive to cold and heat, and is easy to break, the new type of water-type sterilizing pot adopts unique technology and water dripping method, and the pressure error in the pot can be less than 0.01mpa, and the temperature error is less than 0.3°C, so that the pot The inner product can be completely evenly pressed and heated;
The "real-time flow accurate measurement" device is adopted. Keep control of the spray condition in the pot at all times to ensure that the soft bag products in the pan are evenly heated to avoid “cold spots”;
The whole process of heating, heat preservation and cooling of the new type of leaching sterilizer is controlled by PLC intelligently and “automatic touch screen” as the man-machine interface. The multi-stage heating and cooling process can reduce the temperature difference between the surface and the center of the soft bag food. The lifting temperature can reach 16 segments, which is more than twice of the domestic common sterilization pot. All parameters are conveniently input by the PLC touch screen, and 30 sets of sterilization parameters can be pre-stored. Only the relevant sterilization parameters can be called up when changing the material variety. ; heat distribution measurement. Each sterilization pot must be subjected to strict heat distribution measurement before leaving the factory. The temperature error is strictly controlled within 0.5 °C to ensure the safety and reliability of each bag in the sterilization process. The cooling water is separated from the sterilization water. When it is cooled, it is in contact with the soft packaging bag. It is the circulating water that has been sterilized by high temperature. It will not cause secondary pollution to the soft packaging bag. The cooling water will not be polluted by the materials and grease adhered on the surface of the flexible packaging bag, and can be recycled and saved. , greatly reducing production costs; high degree of automation. When the sterilization basket containing the product is pushed into the sterilization pot, as long as the start button is pressed, the entire sterilization process, temperature rise, constant temperature sterilization, pressurization, decompression, and cooling are automatically completed.
The characteristic of the high-temperature sterilization pot food is that the package is vacuum-treated to avoid discoloration and odor caused by oxidation, and the shelf life can be extended, and it is easy to circulate, store and sell at room temperature. The disadvantage is that the taste and color of the food vary greatly due to the long-term sterilization of a single high temperature. The water-repellent sterilization pot is heat-sterilized in a short period of time, avoiding the high temperature and high pressure of the food for a long time, and the flavor and taste of the produced food are almost unchanged, and the range of the processed product is also wider.
Due to its huge technical advantages, the new type of leaching sterilizer has gradually replaced the ordinary sterilizing pot and has become the first choice for many soft bag food export enterprises in China. It is foreseeable that with the development of the domestic food industry, the development prospects of the drenching sterilizer are very bright.
The water-repellent sterilization pot produced by Ningbo Ruituo Sterilization Equipment Co., Ltd. is the only equipment that can completely replace imported products in China, and has been purchased by more than ten countries including the United States, Russia, Singapore, Thailand, Malaysia, Myanmar and India. Reutto is based on technological innovation in the field of secondary sterilization and is centered on lean manufacturing. The company has a full range of secondary sterilization products, including double-pot full-water sterilization pot, water-type sterilization pot (side spray, top spray), rotary sterilization pot (watering, full water) and laboratory sterilization pot. The company is committed to providing optimal sterilization solutions for meat products, fruits and vegetables, aquatic products, vegetarians, poultry, porridge and health and snack foods.

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