Deep Eutectic Solvents (DESs) are a novel class of liquid systems that are increasing their relevance in the literature for their green and environmentally friendly features, for their catalytic properties and for their structural features. In this work, the mixture glycerol/water at 1/2.55 M ratio was demonstrated to be a DES thanks to the comparison of the experimental melting points with the theoretical melting curves. This DES was used as extracting agent on different food waste matrixes: onion, tomato and apple peels, spent coffee grounds and grape pomace. The results were compared with those obtained with water and with glycerol, showing a superior capability of the DES in the extractions, as well as superior antioxidant properties of the extracts. This promotes the use of this DES at the eutectic point and promotes a novel approach about the direct use of the extracts without further purification procedures considering the food grade of the DES components.
The glycerol/water mixture is an effective deep eutectic solvent for the extraction of bioactive components from food waste matrices
Pompei F.;Lepore E.;Catalini F.;Gabrielli S.;Mannozzi C.;Vittori S.;Tiecco M.
2025-01-01
Abstract
Deep Eutectic Solvents (DESs) are a novel class of liquid systems that are increasing their relevance in the literature for their green and environmentally friendly features, for their catalytic properties and for their structural features. In this work, the mixture glycerol/water at 1/2.55 M ratio was demonstrated to be a DES thanks to the comparison of the experimental melting points with the theoretical melting curves. This DES was used as extracting agent on different food waste matrixes: onion, tomato and apple peels, spent coffee grounds and grape pomace. The results were compared with those obtained with water and with glycerol, showing a superior capability of the DES in the extractions, as well as superior antioxidant properties of the extracts. This promotes the use of this DES at the eutectic point and promotes a novel approach about the direct use of the extracts without further purification procedures considering the food grade of the DES components.I documenti in IRIS sono protetti da copyright e tutti i diritti sono riservati, salvo diversa indicazione.
