响应面法优化超临界CO_2萃取无花果种籽油工艺研究_王磊 . Study on the Method of Optimizing Supercritical Carbon Dioxide Extraction of Ficus carica L. Seed by Response Surface Methodology

Abstract

Response surface methodology(RSM) was employed to optimize the process parameters of supercritical carbon dioxide(SC-CO2) extraction of the fig seed oil(FSO). The adequacy of the model equation for predicting the optimum response values was verified effectively by the validation. Effects of temperature, pressure and time on yield of FSO were investigated. Maximum yield of FSO from the mathematical model was predicted to be 25.95% dry basis under the condition of temperature 44.7 ℃ and pressure 29.0 MPa with extraction time 85.1 min. GC-MS analysis showed that fatty acids in the oil were composed of 26.50% saturated fatty acids and 73.50% unsaturated fatty acids. Furthermore, oleic acid (51.41%), palmitic acid (19.45%) and palmitoleic acid (14.76%) were the main fatty acids in the FSO.