FIELD: agriculture and food-processing industry, in particular, preparing of fresh apples for storage and further usage in space feeding.
SUBSTANCE: method involves sequentially extracting biomass of Pythium irregulare micromycet using non-polar extractant in supercritical state, water, alkali, water, acid, water, alkali, and water; joining first extract to solid residue for producing of preparation from biomass; sterilizing distilled water, paper wads and smoking paper; preparing 0.02%-potassium permanganate solution, 0.5%-citric acid solution, and 0.005%-suspension of biomass preparation, said solutions and suspension being based on sterilized distilled water; inspecting apples; washing in sweet running water having temperature of 20-30 C; sequentially holding apples at room temperature in potassium permanganate solution, citric acid solution and biomass preparation suspension during 5 min in each solution and suspension; removing residual solutions and suspension from fruit surfaces using sterilized paper wads; exposing each of fruit opposite sides to ultraviolet radiation during 30 min at power intensity of 1.5-2.5 W/m3; packaging each apple under aseptic conditions in smoking paper and laying in single layer in sterile polymer trays.
EFFECT: prolonged shelf life of apples fit for usage in space feeding.
