We know that refrigerated display cases primarily keep food fresh by maintaining low internal temperatures, preventing rapid spoilage and inhibiting bacterial growth. Many refrigerated display case manufacturers are now improving their preservation technologies to deliver a superior freshness experience.
In recent years, refrigerated display case preservation technology has become increasingly sophisticated. Which technical parameters directly affect the freshness of fruits and vegetables? Below, we’ve listed five key indicators for refrigerated display case preservation:
Temperature: Different foods require different storage temperatures. For example, milk, beer, juice, and jam are best stored between 0°C and 5°C, making them suitable for the refrigerator compartment. Fish, meat, and ice cream should be stored below -6°C, making the freezer compartment the most appropriate.
Humidity: Moisture is essential for the freshness of fruits and vegetables. Without water, they will dry out and wilt. Refrigerated display cases should maintain 95% moisture content to keep food truly hydrated and vibrant.
Airflow Indicator: Freezers should employ multi-directional airflow to achieve 360° air distribution, ensuring more uniform temperature throughout the interior. This prevents food from spoiling due to temperature fluctuations and maintains its freshness.
Gaseous Indicator: Why can’t food in a freezer stay fresh indefinitely? Ethylene gas released by fruits and vegetables accelerates food ripening, while excessive oxygen in the freezer can cause spoilage. Therefore, effective absorption of ethylene gas and proper air composition are essential for extending the shelf life of fruits and vegetables.
Antibacterial Indicator: If freezers lack adequate antibacterial measures, more than 10 harmful bacteria, including E. coli, mold, and Staphylococcus aureus, can proliferate, multiply, and erode the cellular structure of food, causing it to lose all nutritional value and become contaminated with toxins. Therefore, freezers must provide comprehensive, three-dimensional antibacterial protection to prevent foodborne illnesses.
Guangdong Ligui Refrigeration Co., Ltd. has been focusing on the refrigeration industry for over 20 years. Follow us to get more information on freezer usage!
