METHOD FOR FLEXIBLE STERILIZATION OF SPRAY-DRIED-AND-PREPARED BARLEY GRASS POWDER AND EFFECTIVE STORAGE OF NUTRITION COMPONENT

摘要

Provided is a method for flexible sterilization of spray-dried-and-prepared barley grass powder and effective storage of a nutrition component, wherein the barley grass powder obtained from spray drying is the main ingredient, the method comprising: removal of impurities, composition, loading, injection of ozone and variable speed stirring, two-band radio frequency sterilization, natural cooling, packing, inertial gas protection, sealing, storage at low temperature away from light, and other steps. the combination of the radio frequency sterilization technology and the two-band radio frequency sterilization technology by employing ozone enables short sterilization time and little loss of nutrients and functional components; the adding of antioxidant bayberry polyphenol keeps the high activity of barley grass powder superoxide dismutase, chlorophyll, and flavone, etc.; the injection of mixed inert gas avoids oxidation deactivation of nutrient components such as superoxide dismutase, barley green, and flavone, thus keeping the antioxidation activity retention rate above 90% after sterilization.