FIELD: agriculture. SUBSTANCE: method involves cleaning grain from contaminants and treating with aerosol flow of propionic acid, which had been preliminarily passed through supersonic horn. Propionic acid comprises additive of chitosan. Source of chitosan is preparation produced by sequential extracting of Mortierella nigrescens micromycet biomass by predetermined process. EFFECT: increased efficiency by killing of grain surface microflora and reliable grain storage method. 2 ex
