超临界CO_2流体提取洛阳牡丹籽油工艺研究_邓瑞雪 . Optimization of Supercritical CO2 Extraction and Analysis of Chemical Composition of Peony Seed Oil

Abstract

Single factor and orthogonal array design method were used to optimize the extraction of peony seed oil using supercritical carbon dioxide (SC-CO2) with respect to the effects of extraction pressure and temperature, length of extraction. Along with this, the chemical composition of the extracted peony seed oil was analyzed by GC-MS. The results showed that the optimized SC-CO2 extraction for 2.5 h at 40 ℃, 30 MPa and a CO2 flow rate of 25 kg/h resulted in a maximum oil yield of 30.7%. The total content of unsaturated fatty acids of the extracted peony seed oil was 70.81%.