Bioconversion of organic substrata such as food waste with admixture of sawdust was investigated. Species composition of mycobiota and its alterations determined by the maintenance time and inoculation of the fungus-introducer Trichoderma harzianum Rifai C 82-93 were established. In the control substrata, fungi of the Mucorales order, as well as Geotrichum and Aspergillus genera prevailed. It was determined that Trichoderma harzianum C 82-93 strain colonised the studied substrata in the course of 15 days (population density reached 80 %). When food waste was composted with T. harzianum C 82-93 strain, the processes of humification were accelerated, total amount of nitrogen increased, and the quality of composts (C/N ratio) improved. The method of fungal inoculation into a large mass of substratum was tested under industrial conditions.
Keywords: composts, food waste, bioconversion, micromycetes, Trichoderma harzianum.