Application of Nitrogen Flushing in Food Packaging

The food industry is committed to integrating food packaging processes to ensure the safe elimination of microbial contamination， the non-oxidation of food and the extension of shelf life after packaging. Pressure persists using natural substitutes instead of harsh chemical preservatives. One of the most effective ways to extend food life is to use nitrogen in a unique process called nitrogen rinsing packaging.

What is Nitrogen Flush Packaging?

Nitrogen flushing replaces oxygen and other impurities in food packaging or bags. This has changed the environment in food packaging. Nitrogen is an inert gas that does not affect the taste or texture of food. Because oxygen promotes corruption， removing it and replacing it with nitrogen prevents food degradation and keeps it fresh longer. It also helps cushion packaged food and protects it when stored， transported and on shelf.

How does the nitrogen rinse package work?

Nitrogen flushing begins by placing food in an open package or bag. The machine then pushes the oxygen-containing air out of the package and quickly replaces it with nitrogen. 99% of high nitrogen levels are commonly used for food preservation. The machine seals the package or bag tightly to keep the nitrogen inside. The bags are then packed in large boxes and transported to restaurants and groceries.

This method has many advantages over the entire nitrogen flushing package process， including:

Oxygen is successfully replaced， thereby delaying the corrosion caused by oxidation.

Oxygen-dependent microorganisms are effectively prohibited from growing and destroying food.

By filling the space in each bag or package， the consistency of the packaged products can easily be maintained on the shipping boxes and shelves.

Longer shelf life and better food preservation reduce food loss and cost.

Provide consistent， delicious and fresh products to consumers.

Nitrogen is an economic， sustainable and safe source that can be used throughout the packaging process.

What types of food can Nitrogen Rinsing Packages be used for?

There are several types of food， and nitrogen flushing packaging is very suitable. For example， freshly baked ground coffee or coffee beans are effectively vacuum-sealed by rinsing the package with nitrogen. Remove water and oxygen and replace with nitrogen. Nitrogen maintains the quality and freshness， flavor and aroma of coffee oil. In the food industry， other foods packed and preserved with nitrogen are beans， potato chips and different kinds of nuts.

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