2026-04-17T14:38:58Zhttps://riubu.ubu.es/oai/requestoai:riubu.ubu.es:10259/43422022-04-29T12:02:45Zcom_10259_5827com_10259_5086com_10259_2604com_10259_4244col_10259_5828col_10259_4245
Repositorio Institucional de la Universidad de Burgos
author
Rebolleda Alonso, Sara
author
Beltrán Calvo, Sagrario
author
Sanz Díez, Mª Teresa
author
González San José, Mª Luisa
author
García Solaesa, Ángela
2017-02-14T12:26:02Z
2017-02-14T12:26:02Z
2013-12
http://hdl.handle.net/10259/4342
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.
eng
Attribution-NonCommercial-NoDerivatives 4.0 International
Supercritical fluid extraction
Wheat bran
Alkylresorcinols
Sovová’s model
Extraction of alkylresorcinols from wheat bran with supercritical CO2
info:eu-repo/semantics/article
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URL
https://riubu.ubu.es/bitstream/10259/4342/1/Rebolleda-JFE_2013.pdf
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Rebolleda-JFE_2013.pdf
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https://riubu.ubu.es/bitstream/10259/4342/6/Rebolleda-JFE_2013.pdf.txt
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Rebolleda-JFE_2013.pdf.txt