happirikastettu

Happirikastettu is a Finnish term that translates to "oxygen-enriched" or "oxygen-fortified." It is primarily used in the context of modified atmosphere packaging (MAP) for food products. In MAP, the normal air inside a package is replaced with a specific mixture of gases. When a food product is described as "happirikastettu," it means that the gas mixture used in its packaging contains a higher concentration of oxygen than is found in ambient air.

The purpose of using increased oxygen levels in MAP varies depending on the food. For fresh red meats, a high oxygen atmosphere (often 70-80% oxygen) is used to maintain the bright red color of myoglobin, which is desirable to consumers. This color retention is achieved through the formation of oxymyoglobin. However, this high oxygen level can also promote lipid oxidation, potentially leading to off-flavors and a shorter shelf life if not managed correctly. For other products, such as some baked goods or cheeses, lower levels of oxygen might be used in conjunction with other gases like nitrogen and carbon dioxide to inhibit microbial growth and enzymatic spoilage.

The specific composition of the gas mixture in "happirikastettu" packaging is always tailored to the particular food item and its desired shelf life and quality characteristics. Consumers may encounter "happirikastettu" labeling on various food items, particularly fresh meats, where the visual appeal is significantly influenced by the oxygen content in the packaging.