Application of the hottest microwave in packaged f
2022-10-19- Detail
Use of microwave in packaged food
use
used for drying and sterilization of dried beef. Sterilization of vacuum packed chicken legs, chicken wings, dried pork, dried tofu, tofu milk, etc
characteristics of microwave sterilization: low temperature sterilization maintains nutrients and traditional flavor. Microwave can penetrate the interior of food with a frequency of 2450MHz and oscillate at 2.45 billion times per second. It kills bacteria through special thermal and non thermal effects. Compared with conventional thermal sterilization, it can obtain the required disinfection and sterilization effect at a relatively low temperature and in a relatively short time. Practice has proved that E. coli can be completely killed at 70 ℃. In order to adapt to the new development and utilization situation, the total number of bacteria at 90 ℃ is greatly reduced, and the time is only 2 ~ 3 minutes. The speed is fast and the time is short, so the nutritional ingredients and traditional flavor in food are preserved. Extending the shelf life has a significant effect on improving product quality
characteristics of microwave drying:
1. Selective heating. Because water molecules absorb microwave best, the part with high water content absorbs microwave power more than the part with low water content. This is the characteristic of selective heating, which can be used to achieve uniform heating and drying. (9) 10min cycle torque variability
2, energy saving and high efficiency. Microwave acts directly on materials, so there is no additional heat loss. The air in the furnace and the corresponding containers will not heat, so the thermal efficiency is very high, and the production environment is also significantly improved. Compared with far-infrared heating, it can save 30% electricity
3. Short time and high efficiency. Microwave heating is a process that makes the heated object become a heating body without heat conduction. The microwave penetrates the inside and outside of the object from all directions of the adjusting balance weight, and at the same time, the object is evenly heated in a very short time, which greatly shortens the drying time
4. Easy to control and advanced technology. Compared with conventional methods, the equipment is ready to use; No thermal inertia, flexible and convenient operation; From the perspective of valuation, the power and transmission speed of microwave are adjustable. In microwave heating and drying, there is no waste water and waste gas, which is a safe and harmless high-tech
reprinted from:
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