Supercritical CO2 extraction of feed stocks to generate high added valuebio-products

The huge amounts of waste generated every year by the industry, in addition to the great loss of valuable materials, pose serious organisational problems, both from an economic and ecological point of view. Many of the residues, however, have the potential to be reused and utilized completely via integratedbio-refining technologies. Extraction techniques which play a very important part in biorefineries should provide swift processing and yieldquantitative recovery without degradation, complemented by easy separation of extracts from the solvent.In this work, focussed on two generic biomass examples -grape seeds and spent coffee grounds, we outline the perspectives of introducing mild, efficient and with low environmental impact techniques that apply compressed fluids in biorefineries for obtaining high value-added products with a wide spectrum of applications