FIELD: primary treatment of food and feed plant products. SUBSTANCE: method involves applying onto plant product of liquid antiseptic in the form of saturated aqueous solution of preparation produced by sequential extracting of Pythium gracile micromycet biomass with the use of non-polar extractant in above-critical state, water, alkaline, water, acid, water, alkaline, and water, with following joining of first extract with solid residue. EFFECT: simplified treatment process.
