CirCO project – acronym of Circular Coffee – aims to study the possible valorization of a coffee by- product deriving from its roasting, the silverskin.
Coffee is the second most traded commodity in the world, its consumption on a global scale amounting to about 9.8 million metric tons (2015). Per capita consumption is particularly high in Northern Europe, while Italy with 3.4 kg per capita is the eighteenth consumer with 211,000 tons in 2013. Silverskin is a dry waste produced in well localized industrial facilities, thus making its collection very easy. Silverskin is only used sometimes for energy production, but in general it is disposed of as waste.
CirCO project aims at upgrading coffee silverskin by valorizing all its components. Indeed from this by-product could be broken up into cellulose, lignin, lipids and some phenolic compounds.