Why is nitrogen used in food packaging
Why is nitrogen used in food packaging
The purpose of filling the food packaging container with nitrogen is simple. It is to protect the food inside from moisture and spoilage, so it needs to be filled with nitrogen. In addition, packaging like Cocoa is better looking than flat. The food inside is not easily crushed.
Puffed food and edible oil are generally filled with nitrogen as protective gas, mainly because nitrogen is an inert gas for food, which can avoid the oxidation of the contents of the package by oxygen. Moreover, nitrogen is easily available, with low cost and stable properties, and is very suitable for use as a protective gas for food.
Selecting nitrogen as the filling has the advantages of reducing weight and transportation costs. Nitrogen is lighter and less dense than air. And colorless and tasteless, different from other gases, will not affect the quality of food.
Nitrogen, as the most abundant air in the air, is one of the few inactive gases. Nitrogen is used as a protective gas for other substances because it is inactive at normal temperature and its chemical properties are very stable. Credit is very extensive in life. For example, filling the food packaging bag with nitrogen to prevent deterioration, filling the incandescent lamp, as a coolant, making nitric acid, etc.
Therefore, the best way to store and preserve food is to fill it with nitrogen.
