Aseptic Processing Offers a New Definition of Fresh Dairy
Aseptic dairy processing uses ultra-high-temperature treatment to heat products to between 280°F and 302°F for roughly two to three seconds. The process is intended to eliminate harmful bacteria and spores while retaining key proteins and nutrients. The treated product is then sealed in a sterile environment, limiting the risk of recontamination.
This combination can produce dairy beverages that are safe and shelf-stable without refrigeration. It differs from conventional pasteurisation, which uses lower temperatures to destroy pathogens but does not make dairy products sterile. Pasteurised products therefore need controlled temperatures during storage and distribution to maintain their quality.
For refrigerated beverages, the cold chain extends from the processing plant to retail outlets and, ultimately, the consumer’s refrigerator. Maintaining that system requires refrigeration throughout transport and storage. Aseptic production removes the need for uninterrupted cooling and can reduce losses associated with spoilage, according to the description of the process.
The technology applies to more than traditional dairy drinks. It is being used in discussions around ready-to-drink dairy products, coffee beverages, protein drinks and non-dairy alternatives. A report by CoBank found that sales of ready-to-drink dairy nutritionals and protein shakes increased by 74% over the previous four years.
Consumer expectations remain a consideration in the American market. Many shoppers associate cold products with freshness, quality and safety, particularly in dairy. Some processors have consequently placed aseptically processed beverages in refrigerated sections, even when the products can be stored at room temperature, to match established shopping habits.
Product requirements vary according to formulation and packaging. JBT Marel provides both UHT aseptic-processing systems and pasteurisation equipment for dairy-beverage producers. The two approaches can be used for shelf-stable products or for beverages that continue to require refrigeration.
