Deoxygenation preservative packaging machine has an irreplaceable role in the food industry1
We have the product needs of preservative packaging machines, and we regularly manufacture preservatives for you. In today's work, preservatives are widely used in life, and we need to understand how they work! The following editor will take you into the world of preservative packaging machines and listen to our voices: 1. Preservation principle Deoxidizing preservatives, also known as deoxidizers, can absorb oxygen in food packaging containers, so that the interior of the packaging containers is anaerobic state (the oxygen content is less than one thousandth), so as to achieve the purpose of improving the hygienic quality of food and prolonging the shelf life of food. To understand the fresh-keeping principle of deoxygenation preservatives, we must start with the relationship between oxygen and food quality. If the food packaging container contains a lot of oxygen, it will cause the rapid growth of aerobic bacteria and mold, resulting in mildew and spoilage of the food. At the same time, the presence of oxygen will also cause fat oxidation and browning, which will not only destroy the flavor of the food, but also reduce the nutritional value of the food. If the oxygen in the food packaging container is removed or its content is reduced, the occurrence of these undesirable phenomena can be effectively prevented. 2. Functional ingredients Deoxygenation preservative is a mixture, and the ingredients include iron powder, activated carbon, etc. Among them, iron powder is the most important functional substance, and the preservation function of deoxidizing preservative is accomplished by iron powder. The iron powder reacts with the oxygen in the packaging container and consumes the oxygen, so as to achieve the purpose of removing the oxygen. The concise chemical reaction formula for deoxidizing iron powder is: 4Fe+3O2→2Fe2O3. 3. Comparative advantages Compared with other preservation methods, the use of deoxygenation preservatives in food packaging has the following advantages: 1. Small investment and low cost The use of deoxygenation preservatives to preserve food freshness does not require additional machinery and equipment. will increase fixed investment costs. To keep food fresh by vacuum packaging, it is necessary to purchase a vacuum packaging machine; to keep food fresh by nitrogen filling, it is necessary to purchase nitrogen generating equipment and nitrogen filling device. Moreover, relative to the price of the whole food, the cost of deoxidizing preservatives is very low. 2. Simple operation It is very simple to use deoxygenation preservative to keep food fresh, just put the deoxygenation preservative into the food packaging container, no need to add other complicated processes, and the technical level of the staff is not required. very high. 3. Long fresh-keeping time Compared with the fresh-keeping methods of vacuum packaging and nitrogen-filled packaging, the fresh-keeping time of deoxygenation preservatives is longer. Vacuum packaging is used for food, and the oxygen content after the packaging container is sealed is generally 3%. Since most packaging materials (except metal and glass) are permeable to oxygen, the oxygen in the external environment will gradually penetrate into the packaging container during the storage process of food, which will cause deterioration of food quality.
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