what is ultra pasteurized milk

Ultra-pasteurized milk is a type of milk that has been heated to a higher temperature than normally pasteurized milk, resulting in a longer shelf life. The milk is heated to a minimum of 280°F for at least two seconds, which is a more intense process than regular pasteurization. This high heat kills virtually all bacteria, making the milk practically sterile. Ultra-pasteurized milk is packaged under near-sterile conditions, which makes recontamination of spoilage bacteria rare. When properly refrigerated, ultra-pasteurized milk can last from 30 to 90 days after processing and before the container is opened. However, some nutritionists argue that ultra-pasteurized milk may have a slightly different taste and may have lost some of its nutritional value compared to normally pasteurized milk.