RT info:eu-repo/semantics/article
T1 Supercritical fluid extraction of corn germ oil: Study of the influence of process parameters on the extraction yield and oil quality
A1 Rebolleda Alonso, Sara
A1 Rubio Rodríguez, Nuria
A1 Beltrán Calvo, Sagrario
A1 Sanz Díez, Mª Teresa
A1 González San José, Mª Luisa
K1 Supercritical fluid extraction
K1 Corn germ oil
K1 Tocopherol
K1 Sovová’s model
K1 Food
K1 Chemical engineering
K1 Alimentos
K1 Ingeniería química
AB The supercritical fluid extraction of corn germ oil has been studied in this work. Extractions were carriedout at different pressure, temperature and flow rate to analyze the influence of these variables on theextraction kinetics and the oil quality obtained. Extraction curves are initially linear with a slope close tothe oil solubility value in supercritical CO2. Based on these results a mathematical model was successfullyapplied to describe the extraction curves. Characterization of supercritical crude corn oil was performedby determining some physical parameters such as refraction index, density and color. Additionally, thefatty acid composition, neutral lipids, the content of tocopherols, acid index, peroxide value, antioxidantcapacity and the oxidative stability were determined in the corn oil extracted. Fatty acid composition wascompared with that for crude germ oil and no significant differences between the oils extracted by bothmethods were found. Oxidative stability test using the Rancimat showed that supercritical CO2 extractedcorn oil is less protected against oxidation than n-hexane extracted oils.
PB Elsevier
SN 0896-8446
YR 2012
FD 2012-12
LK http://hdl.handle.net/10259/4338
UL http://hdl.handle.net/10259/4338
LA eng
DS Repositorio Institucional de la Universidad de Burgos
RD 23-nov-2024