Views: 0 Author: Site Editor Publish Time: 2022-10-05 Origin: Site
The principle of the modified atmosphere packaging machine is to use protective gas to replace the air in the package, so that the food is placed in a protective gas environment, the growth and reproduction of bacteria and molds that cause food spoilage are inhibited and preservative, the color of fresh meat is protected, and the aging of fresh fruits and vegetables The process is delayed, thereby prolonging the fresh-keeping period of the food. After these years of continuous development, the modified atmosphere packaging machine has been widely used in the fresh-keeping packaging of fresh food (fish, meat, fruits and vegetables), cooked food and barbecued food, and can keep the food fresh. Original juice, original flavor and original color, meeting the requirements of ready-to-eat or ready-to-cook in kitchen engineering.
For cooked food, the place for cooling and modified atmosphere packaging should meet the requirements of GB 50687 clean production workshop, and the design should be implemented in accordance with the relevant requirements of GB 50687. The place for cooling and modified atmosphere packaging of cooked braised products should be equipped with sufficient refrigeration equipment. Ensure that the ambient temperature of the product cooling workshop is not higher than 12 °C, and the ambient temperature of the modified atmosphere packaging workshop is not higher than 15 °C. Pre-cooling is generally done through a vacuum pre-cooler or a pre-cooling warehouse to cool high-temperature food to below 10 degrees in a short period of time. It can effectively reduce the time for bacterial reproduction, ensure that the bacterial colony does not exceed the standard before packaging, and the food does not deteriorate. Modified atmosphere packaging has high requirements on the packaging environment, and must be hygienic before packaging to achieve long-term preservation.
1. The residual oxygen rate in the packaging box is less than 0.5%. (Any box with residual oxygen higher than 0.5% will shorten the preservation period);
2. Preservation gas ratio accuracy (high-precision preservative gas ratio can ensure the stability and unity of the preservation period);
3. Uniform heat sealing and beautiful appearance (increase the appearance value of packaging products);
4. High-speed packaging (reducing production costs) refrigerated environment means that after the cooked braised products are cooked, the central temperature of the cooked braised products is reduced to ≤ 10 °C within 2 hours, and the core temperature of the cooked marinated products is packaged under the condition of ≤ 10 °C , storage and sales process.