Green production of energetic Jatropha oil from de-shelled Jatropha curcas L. seeds using supercritical carbon dioxide extraction

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• 作者：Chao-Rui Chen^a ; ^b ; Yang-Jung Cheng^a ; Yern-Chee Ching^c ; Daina Hsiang^d ; Chieh-Ming J. Chang^a ; ^{cmchang@dragon.nchu.edu.tw}
• 关键词：De-shelled Jatropha curcas L. seeds ; Supercritical carbon dioxide ; Extraction ; Triglycerides ; Response surface methodology
• 刊名：The Journal of Supercritical Fluids
• 出版年：2012
• 期刊代码：60_08968446
• 类别：ce
• 出版时间：June, 2012
• 卷：66
• 期：Complete
• 页码：137-143
• 文件大小：794 K

摘要

This study examined the use of supercritical carbon dioxide (SC-CO₂) in the extraction of triglycerides from de-shelled Jatropha curcas L. seeds. A central composite response surface methodology (RSM) was employed to evaluate the effects of pressure, temperature and solvent-to-solid ratio (SSR) on total yield (TY), concentration of triglycerides (C_TG) and recovery of triglycerides (R_TG). In the experiment, SC-CO₂ extraction of 15 g ground, de-shelled Jatropha seeds at a CO₂ flow rate of 25 mL/min was investigated under various pressure (250-350 bar), temperature (313-333 K) and SSR (60-100) conditions. The proposed quadratic model well fitted the RSM-designed data, and the statistical analyses showed that both pressure and SSR are important parameters that will significant affect the quality of extracted oil. Under a pressure of 350 bar, a temperature of 325 K and a SSR of 82, the values of TY, C_TG and R_TG were 43.0%, 936.2 mg/g, and 98.1%, respectively.