How does Packaging Affect Coffee Freshness?

Freshness is a critical factor in maintaining the aroma, flavor, and quality of coffee. Packaging protects the coffee from environmental factors that can reduce its freshness. In this blog, we look at how packaging affects coffee freshness and understand the science behind effective packaging solutions.

Does Packaging Affect Coffee Freshness

Yes. When coffee is exposed to oxygen, light, and moisture, it undergoes oxidation, which causes it to become stale and bland in flavor.

Key factors that influence freshness in coffee

Oxygen exposure

The exposure to oxygen speeds up the rate of oxidation of coffee; this leads to the loss of the essential oils and flavors of the coffee.

Light exposure

UV light destroys compounds in coffee, reducing aroma.

Humidity

High humidity may cause coffee to absorb water, affecting its texture and flavor.

Carbon dioxide release

Freshly roasted coffee releases carbon dioxide, which needs to be released without letting oxygen in.

How packaging protects coffee

Segregation protection and material science

Modern packaging of coffee employs high-barrier materials like aluminum foil, metalized films, and multilayer composites. These materials ensure very good protection against oxygen, light, and moisture, maintaining the freshness of the coffee.

Oxygen barrier

It has been established that a packaging material with an OTR of below 1 cc/m²/day drastically reduces the rate of oxidation. Hence, packaging that is either vacuum-sealed or filled with nitrogen is very effective.

UV-protective films

A study by the Journal of Food Protection demonstrated that UV-protective films can reduce photodegradation by as much as 90%, effectively preserving coffee’s volatile compounds.

Professional design for coffee packaging

One-way exhaust valves: a game changer

One-way exhaust valves are an advanced technology in coffee packaging. They allow carbon dioxide to escape while preventing oxygen from coming in, thus maintaining the structural integrity of the coffee.

Case study: flexible packaging with exhaust valve

A forum discussion at the Flexible Packaging Association showed how flexible, resealable packaging with venting valves maintains coffee freshness better than rigid packaging.

Sealing strips and resealable designs

The sealing strip ensures a hermetically sealed airtight environment, while the resealable zipper design keeps the coffee fresh after opening the package.

Conclusion

Flexible packaging is not only a means of beautification but also a scientific tool to keep coffee fresh, developing the coffee experience. High-barrier materials, venting valves, and sustainable design will help manufacturers ensure their coffee is fresh right from production into the cup of the consumer.

Investing in advanced packaging solutions is a boon for businesses and coffee lovers alike.