The aroma and flavor of coffee are important factors that attract consumers. Therefore, freshness preservation is also the core goal of coffee food packaging. In addition to preventing moisture, measures also need to be taken to protect coffee from the impacts of factors such as oxygen and light on its quality.

  Oxygen is one of the main factors causing coffee to oxidize and deteriorate. To reduce the impact of oxygen, an oxygen absorber can be added to the packaging. The oxygen absorber can absorb the oxygen inside the packaging, reduce the oxygen concentration, and extend the shelf life of coffee. Moreover, using packaging materials with high barrier properties can effectively prevent oxygen from entering.

  The ultraviolet rays in light will accelerate the oxidation of coffee and the loss of its flavor. Therefore, coffee food packaging should preferably use light-blocking packaging materials, such as aluminum foil composite films, dark-colored plastic films, etc. These materials can effectively block the irradiation of ultraviolet rays and protect the quality of coffee.