The extractives and chemical composition of hybrid aspen bark allow it to be used in several applications in the chemical industry. In the doctoral dissertation of Pasi Korkalo, who is a researcher at the Natural Resources Institute Finland (Luke) and a doctoral student at the University of Oulu's Sustainable Chemistry unit, the chemical composition of the bark biomass of hybrid aspen was studied, activated carbon was produced from the bark extract, and a pesticide chemical was produced from the bark's hemicellulose. All chemical products were separated from the biomass following cascade processing principles.