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2012•Journal of Beijing Technology and Business UniversityRequires access

Optimization of Peanut Oil Extraction with Supercritical Carbon Dioxide by Response Surface Methodology

LI Gao-yang

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Abstract

A method utilzing supercritical CO2 fluid extraction(SFE-CO2) technology to extract peanut oil was described.The optimum technological conditions were obtained by single-factor and response surface experiments,and the effect of parameters such as peanut granularity,extraction pressure,time,temperature and supercritical CO2 flow on extraction rate were investigated.The highest extraction rate of 96.16% was achieved under the optimum extraction conditions of 20 mesh peanut,20 L/h CO2 flow,the pressure of 24 MPa,and 43 ℃ for 110 min.The unsaturated fatty acids content of peanut oil with the SFE-CO2 fluid extraction(mainly linoleic acid and oleic acid) reached as high as 78%,in line with the level of first-class peanut oil standard.

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What this paper is about

A method utilzing supercritical CO2 fluid extraction(SFE-CO2) technology to extract peanut oil was described.The optimum technological conditions were obtained by single-factor and response surface experiments,and the effect of parameters such as peanut granularity,extraction pressure,time,temperature and supercritical CO2 flow on extraction rate were investigated.The highest extraction rate of 96.16% was achieved under the optimum extraction conditions of 20 mesh peanut,20 L/h CO2 flow,the pressure of 24 MPa,and 43 ℃ for 110 min.The unsaturated fatty acids content of peanut oil with the SFE-CO2 fluid extraction(mainly linoleic acid and oleic acid) reached as high as 78%,in line with the level of first-class peanut oil standard.

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Available abstract

A method utilzing supercritical CO2 fluid extraction(SFE-CO2) technology to extract peanut oil was described.The optimum technological conditions were obtained by single-factor and response surface experiments,and the effect of parameters such as peanut granularity,extraction pressure,time,temperature and supercritical CO2 flow on extraction rate were investigated.The highest extraction rate of 96.16% was achieved under the optimum extraction conditions of 20 mesh peanut,20 L/h CO2 flow,the pressure of 24 MPa,and 43 ℃ for 110 min.The unsaturated fatty acids content of peanut oil with the SFE-CO2 fluid extraction(mainly linoleic acid and oleic acid) reached as high as 78%,in line with the level of first-class peanut oil standard.

Key concepts: Supercritical carbon dioxide, Extraction (chemistry), Peanut oil, Supercritical fluid, Response surface methodology, Supercritical fluid extraction, Chromatography, Chemistry

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