RT info:eu-repo/semantics/article
T1 Extraction of alkylresorcinols from wheat bran with supercritical CO2
A1 Rebolleda Alonso, Sara
A1 Beltrán Calvo, Sagrario
A1 Sanz Díez, Mª Teresa
A1 González San José, Mª Luisa
A1 García Solaesa, Ángela
K1 Supercritical fluid extraction
K1 Wheat bran
K1 Alkylresorcinols
K1 Sovová’s model
K1 Food
K1 Chemical engineering
K1 Alimentos
K1 Ingeniería química
AB The supercritical fluid extraction (SFE) of wheat bran alkylresorcinols has been studied. Extractions were carried out at 40.0 MPa. The effect of particle size, static extraction pretreatment with supercritical CO2 (SC-CO2) and extraction temperature on the extraction kinetics was investigated. The extraction yield increased as the particle size decreased and with temperature. Extraction curves present a faster and linear initial extraction period followed by a slower extraction period. Based on these results the approximate mathematical model of Sovová was successfully applied to describe the extraction curves. The total content of alkylresorcinols was determined and compared with the alkylresorcinol content obtained by conventional organic solvent extraction. Due to the amphiphilic nature of these resorcinolic lipids, the extraction yield was higher for polar organic solvents than for SC-CO2. Characterization of supercritical extracts was also performed by determining the fatty acid composition and antioxidant activity.
PB Elsevier
YR 2013
FD 2013-12
LK http://hdl.handle.net/10259/4342
UL http://hdl.handle.net/10259/4342
LA eng
NO GALANG project (Ref.: ITC-20113029)financed by the Spanish Government through CDTI
DS Repositorio Institucional de la Universidad de Burgos
RD 22-nov-2024