2024-03-29T15:42:59Zhttps://riubu.ubu.es/oai/requestoai:riubu.ubu.es:10259/43382022-04-29T12:02:45Zcom_10259_5827com_10259_5086com_10259_2604com_10259_4244col_10259_5828col_10259_4245
Supercritical fluid extraction of corn germ oil: Study of the influence of process parameters on the extraction yield and oil quality
Rebolleda Alonso, Sara
Rubio Rodríguez, Nuria
Beltrán Calvo, Sagrario
Sanz Díez, Mª Teresa
González San José, Mª Luisa
Supercritical fluid extraction
Corn germ oil
Tocopherol
Sovová’s model
Food
Chemical engineering
Alimentos
Ingeniería química
The supercritical fluid extraction of corn germ oil has been studied in this work. Extractions were carried
out at different pressure, temperature and flow rate to analyze the influence of these variables on the
extraction kinetics and the oil quality obtained. Extraction curves are initially linear with a slope close to
the oil solubility value in supercritical CO2. Based on these results a mathematical model was successfully
applied to describe the extraction curves. Characterization of supercritical crude corn oil was performed
by determining some physical parameters such as refraction index, density and color. Additionally, the
fatty acid composition, neutral lipids, the content of tocopherols, acid index, peroxide value, antioxidant
capacity and the oxidative stability were determined in the corn oil extracted. Fatty acid composition was
compared with that for crude germ oil and no significant differences between the oils extracted by both
methods were found. Oxidative stability test using the Rancimat showed that supercritical CO2 extracted
corn oil is less protected against oxidation than n-hexane extracted oils.
2017-02-13T10:45:44Z
2017-02-13T10:45:44Z
2012-12
info:eu-repo/semantics/article
info:eu-repo/semantics/acceptedVersion
0896-8446
http://hdl.handle.net/10259/4338
eng
The Journal of Supercritical Fluids. 2012, V. 72, p. 270–277
http://dx.doi.org/10.1016/j.supflu.2012.10.001
Attribution-NonCommercial-NoDerivatives 4.0 International
http://creativecommons.org/licenses/by-nc-nd/4.0/
info:eu-repo/semantics/openAccess
application/pdf
Elsevier
https://riubu.ubu.es/bitstream/10259/4338/7/Rebolleda-JSF_2012.pdf.jpg
Hispana
TEXT
http://creativecommons.org/licenses/by-nc-nd/4.0/
RIUBU. Repositorio Institucional de la Universidad de Burgos
http://hdl.handle.net/10259/4338