使用真空包装机包装食物的保质期多长时间?

通过:SmartWeigh包 2020-08-13
始终介绍在食物中使用的好处,所以有很多人质疑真空包装机可以放置真空包装后多长时间,无论是符合食品安全等的一系列问题。真空包装机可以自动提取袋内的空气,在真空密封过程后完成齐全。真空包装技术起源于1940年。1950年,聚酯,聚乙烯塑料薄膜成功用于真空包装,从那时起,真空包装并得到快速发展。真空packing machine经常用于食品工业,因为在真空包装后,食品抗氧化剂,达到长期保存的目的。问题是需要通过测试来获得准确的结果。当我们看到食品包装的保质期时,只有当企业专业部门进行测试后,就能知道。



but today editorial on the website also collected a lot of questions about vacuum packing food shelf life. Automatic vacuum packaging machine is suitable for frozen meat cutting, cold fresh meat, soy products such as meat, seafood, snack food, pharmaceutical products, medical equipment, electronic components, hardware tools industry products such as vacuum or gas packaging, the packaging has become a trend of food packaging in the future. Let's take a look at the should know what respect. The types of the shelf life of food and food related to vacuum pretreatment before packing. Different kinds of food, or different pretreatment process, vacuum packing is different after the storage time at room temperature. { +- *} Based on experience, for example, if the food preservation at room temperature for two days, may should be fresh agricultural products or slightly processed meat products. If it is, after vacuum packaging, can be extended to six days. Some can be extended to 18 days. Lasting time deli time is shorter, dried fruit, even more than 12 months. Shall conduct the experiment for a specific product.

the following is mainly about the principle of preservation of vacuum packing, in order to understand the problem of shelf life: vacuum packing use oxygen are the main functions of vacuum packaging machine, in order to prevent food spoilage, principle is relatively simple. Because food mildew deterioration is mainly caused by the activity of microorganism, and most microorganisms ( Such as mold and yeast) The survival needs of oxygen, and vacuum packing is use of this principle. Bag food and oxygen in the cells has been removed, the microbe lost its & other Environment & throughout; 。 Results show that when the oxygen concentration in the bag to be less than 1%, the growth of microbial reproduction rate fell sharply, oxygen concentration & le; To zero. 5%, most microorganisms is restrained, stop breeding. Note: vacuum packing can inhibit anaerobic bacteria breeding and enzyme reaction caused by food corruption discoloration, with freezing, frozen, dehydrated, high-temperature sterilization, irradiation sterilization, microwave sterilization, salt and other auxiliary method. Vacuum deaerating not only inhibit the growth of microbial breeding, another important function is to prevent the oxidation of the food, because the grease food contains a lot of unsaturated fatty acids, oxidation by oxygen, make the food flavor metamorphism. In addition, the oxidation also make vitamin A and vitamin C loss, food pigment unstable material under the influence of oxygen, make the color darker. Oxygen can effectively prevent food corruption, therefore, keep its color, aroma, taste and nutritional value. As long as it can reach a certain vacuum degree, the effect is the same.
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