Nutrition Bar Microwave Sterilization Machinery
Principle of microwave sterilization machinery: Microwave sterilization is an extension of microwave heating technology. It shows that the changes and reactions of cell physiological activities of organism after the interaction between microwave and organism and its basic unit-cell. Compared with pasteurization, microwave sterilization has the following remarkable characteristics:Microwave sterilization is a physical sterilization method. It can kill harmful microorganisms such as bacteria, fungi and eggs, as well as viruses without adding chemical preservatives. In the process of killing harmful microorganisms, microwave sterilization will not pollute food residues or radioactive substances and is safe and harmless. It will not change the color, aroma and nutrition of food.
At the same sterilization temperature, the time required for sterilization is short and no preheating is needed. For example, the killing time of E. coli is about 30S. Under the same sterilization conditions, the temperature of bacterial death is relatively low, and the sterilization effect is very significant.It can also sterilize the whole surface of the sterilized material at the same time, greatly shorten the sterilization cycle and ensure the consistency of sterilization.
Because of the simultaneity of sterilization in different parts of the material and the short sterilization time, it can avoid the influence of long heating on the quality of food, especially for food which is not suitable for sterilization at higher temperature or longer heating time. For example: ginger powder with volatile spices, fresh and tender jellyfish with more water content, etc. Microwave sterilization can achieve the best results for materials that need sterilization as well as quality requirements such as color, fragrance and taste unchanged.
Nutrition bar microwave sterilization machinery can be divided into post-packaging sterilization and pre-packaging sterilization. Packaging containers can not be made of metal materials, medium materials are needed, generally plastic soft packaging or glass, engineering plastic containers are appropriate. In order to prevent bag swelling in microwave sterilization process, the equipment can apply pressure in the working bin to adopt back pressure sterilization process, which can prevent bag swelling loss.