Preserving Freshness: Inerting Solutions in Food Packaging

The quest to keep food fresh and safe for extended periods has been an age-old challenge for the food industry. Ensuring that food products reach consumers in their optimal condition is paramount. Fortunately, nitrogen inerting solutions have emerged as a valuable ally in this pursuit. In this article, you delve into the innovative practice of inerting and how it plays a crucial role in preserving the freshness of food during packaging.

What Is Inerting?

Inerting, also known as blanketing, an industry practice gaining momentum, involves the introduction of inert gases into the packaging environment to displace oxygen. This displacement is vital because oxygen is a primary catalyst in the deterioration of food products. By reducing the oxygen concentration inside the packaging, blanketing effectively slows down the oxidation process, preventing spoilage and maintaining the product’s freshness.

The Science Behind 

Inert gases like nitrogen and carbon dioxide are the go-to choices for creating a low-oxygen environment. Nitrogen, in particular, is preferred for its inert, non-reactive properties. It acts as a shield, forming a protective barrier between food products and the surrounding atmosphere.

Benefits of Blanketing in Food Packaging

Extending Shelf Life

Blanketing significantly extends the shelf life of food products. This is particularly important for products that need to travel long distances or have extended storage periods. It allows food producers to maintain product quality, reduce waste, and offer consumers a longer window to enjoy the product.

Preserving Flavour and Aroma

Blanketing is essential for preserving the flavour and aroma of food products. Oxygen can lead to flavour degradation, but by maintaining low oxygen levels, the inherent taste and smell of the food can be conserved, ensuring a delightful experience for consumers.

Preventing Rancidity

Fats and oils are often present in food products and are prone to rancidity when exposed to oxygen. Blanketing safeguards these sensitive components, preventing undesirable changes in taste and odour.

Food Packaging

These solutions are seamlessly integrated into the food packaging process. Here’s how it works:

1. Gas Injection

Inert gases, like nitrogen, are injected into the packaging environment before sealing. This displacement of oxygen creates the desired low-oxygen atmosphere.

2. Hermetic Sealing

The packaging is securely sealed, ensuring that the inert atmosphere remains intact. This sealing process is crucial to maintaining a controlled environment.

3. Quality Assurance

Regular monitoring and quality checks are carried out to ensure that the low-oxygen environment is consistently maintained. This step ensures the effectiveness of the process.

Applications of Blanketing in Food Packaging

Blanketing is versatile and finds applications in various food products:

1. Snack Foods

Snacks, such as potato chips and nuts, benefit from blanketing to keep them crispy and fresh for extended periods.

2. Bakery Products

Bakery items like bread, pastries, and cakes maintain their softness and taste through blanketing.

3. Coffee and Spices

Blanketing is crucial for preserving the flavour and aroma of coffee and spices, which are sensitive to oxidation.

4. Dairy Products

Milk, cheese, and other dairy products can be stored longer without spoiling, thanks to inerting.

Environmental Impact and Sustainability

Inerting not only benefits food preservation but also contributes to sustainability. By reducing food waste, inerting helps mitigate the environmental impact of discarded food products. Additionally, the use of inert gases in food packaging is eco-friendly, as these gases are naturally occurring and readily available.


Inerting solutions have become integral to food packaging, ensuring that consumers receive fresh, high-quality products. By creating low-oxygen environments, nitrogen inerting significantly extends shelf life, preserves flavour, and prevents rancidity. It plays a pivotal role in various food categories, from snacks to dairy products. Moreover, the sustainability aspect of inerting makes it a win-win for both consumers and the environment. Inerting has truly revolutionised the food packaging industry, setting a new standard for freshness and quality assurance.

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