How to Increase the Shelf Life of Food Products

Modified Atmosphere Packaging (MAP) is the most common way to increase the shelf life of food products, though other methods like cryogenic freezing and high-pressure packaging (HPP) can be used as advanced techniques when MAP does not suffice.

This guide will explore the key benefits of different techniques to help you choose the right one. You’ll then learn about specific tips you should follow to maximize the shelf life of different food products.

The Power of Modified Atmosphere Packaging (MAP)

MAP works by replacing regular air with a carefully controlled mixture of gases like nitrogen and carbon dioxide. This way, it creates an environment where food stays fresh significantly longer than it would in a typical atmosphere.

The right mix of industrial gases can triple or even quadruple the shelf life of many food products. For example, using nitrogen in packaging can reduce oxidation and prevent the growth of aerobic bacteria, while carbon dioxide helps inhibit microbial growth.

This combination is particularly effective for meat products, where shelf life can be extended from only a few days to several weeks.

Here are other examples of gas mixtures for food products: 

Source: Sorbent Systems

Temperature Plays a Big Role in Extending Shelf Life

Temperature is a key factor in food preservation. By combining MAP with the right temperature, you can create a highly effective preservation system.

For example, keeping products at temperatures just above freezing (32-34°F) while using nitrogen-enriched packaging can extend shelf life by up to 400% for products like fresh-cut fruits and vegetables.

Effective cold chain management requires industrial refrigeration systems powered by specialized gases. Many food processors rely on them because they consistently maintain precise temperatures.

Advanced Technologies for Increasing Food Shelf Life

In addition to traditional food preservation methods, several advanced technologies are being used for extending the shelf life of different foods. They often rely on industrial gases and specialized equipment to achieve optimal preservation conditions.

Cryogenic freezing using liquid nitrogen is a perfect example. It offers ultra-fast freezing that preserves food quality better than traditional methods.

This process creates smaller ice crystals, resulting in less cellular damage and better product quality upon thawing.

Another emerging technology is high-pressure processing (HPP), which offers similar performance to traditional thermal processing when it comes to food preservation. This method is particularly effective for juice products and ready-to-eat meals, which shouldn’t undergo repeat temperature shifts.

Tips for Effective Food Preservation

Here are some tips for food preservation:

• Monitor and maintain optimal gas mixtures in MAP systems for different foods
• Ensure proper temperature control throughout the supply chain
• Regularly calibrate and maintain all preservation equipment
• Train staff on proper handling and storage procedures (e.g., using food-safe containers and keeping the storage area pest-free)

Benefits of Effective Food Preservation

The right preservation strategy can benefit your bottom line in many ways, such as:

• Maintaining product quality
• Reducing waste
• … and decreasing returns

Food Preservation is Evolving

As food preservation technology continues to evolve, industrial gases will keep playing an important role in extending shelf life. New developments in smart packaging and active packaging systems are already showing promise for even longer shelf life potential.

Working with a reliable industrial gas supplier is crucial to always maximize the shelf life of your food products. By doing so, you ensure access to the pure gases needed for different preservation methods and expertise that can help you implement the right solution for each food product.