<P>This volume in our Sustainability: Contributions through Science and Technology series reviews the use of alternative green technologies (pressurized liquid and supercritical fluid extractions) for grape biomass valorization. Environmental sustainability and circular economy are discussed in relation to agro-industrial waste in the winemaking industry. The waste contaminates the water and soil and in large quantities, it has been related to bad odors, a high content of organic matter in water and greenhouse gas emissions over the entire winemaking industry,Here, the authors illustrate how green extraction of commercially valuable substances can be scaled up at an industrial level. </P><P>Features :</P><LI>Reports on waste valorization in the winemaking industry and converting the waste into more useful products including oils, antioxidants and other valuable materials.</LI><LI>Explores research which contributes to environmental sustainability and circular economy in the winemaking