When customers come to our company to buy potato chip packaging machines, we usually hope customers to add another nitrogen generator. Many customers do not understand us and often ask us why are potato chips packaged in nitrogen. There are two main reasons.
- During transportation, potato chips will be bumped, crushed and broken. Because the bag filled with nitrogen will expand, it can effectively prevent the potato chips from being damaged during transportation. That’s why we recommend customers to fill nitrogen when packing potato chips.
- Nitrogen can remove air, create an oxygen-deficient environment, inhibit the growth of bacteria and molds, prolong the shelf life of food, and improve the ready-to-eat quality of food. At the same time, it can prevent the oxidation of oils, natural pigments and micronutrients, maintain the original color, aroma and taste of food, and improve food quality. In addition, nitrogen is almost insoluble in water and oil, and food has no adsorption of nitrogen, so nitrogen-filled packaging bag will not collapse. Since nitrogen is colorless and odorless, its chemical properties are lazy, and it is not easy to react with other substances, it is very safe.
Why nitrogen and not other gases?
In fact, nitrogen is a very common gas. About 80% of the air is nitrogen. Its characteristics are colorless, odorless, non-flammable, non-combustible, and almost insoluble in water. It hardly reacts chemically with any element at room temperature, so using nitrogen to replace the air in the package, in addition to reducing collision, can also avoid the oxidation of potato chips to produce oil consumption and other oxidizing substances. And avoid the growth of aerobic microorganisms to ensure the quality and safety of potato chips. Of course, if you want to use other rare gases with better stability, but considering various factors, nitrogen is indeed the most convenient and cheap.
The above is why we hope that customers add a nitrogen generator when purchasing a potato chips packaging machine. Of course, not only potato chips can be flushed with nitrogen, but any fragile food can be flushed with nitrogen.