Use of cyclodextrins to recover catechin and epicatechin from red grape pomace
Autor/es
Guardiola, Lucía; Gabaldón, José Antonio; López Miranda, Santiago; Serrano Martínez, Ana Agustina; Hernández Sánchez, Pilar; [et al.]Fecha
2016Disciplina/s
Ciencias de la AlimentaciónMateria/s
Catechin Epicatechin Grape pomace CyclodextrinResumen
The capacity of cyclodextrins (CDs) to extract phenolic compounds from grape pomace was evaluated
and compared with that of ethanol/water or aqueous extraction. The extraction method (stirring and
ultrasound), temperature and time were also studied. Total phenolic compounds (TPC) and antioxidant
activity were measured, and HPLC analysis was used to identify the phenolic compounds. The extracts
obtained using the ethanol/water mixture presented the highest TPC content and antioxidant activity,
followed by those obtained using CD solutions. The addition of CDs to the extractant agent had a selective
effect on the extraction of catechin and epicatechin. The yield of catechin and epicatechin by using aqueous
solutions of CDs was similar to that obtained using organic solvents as ethanol.