Supercritical CO2 extraction method for rosa roxburghii tratt seed oil

The invention relates to the technical field of aromatic oil, in particular to a supercritical CO2 extraction method for roxburgh rose seed oil. A supercritical CO2 extraction system is adopted and comprises an extraction kettle, a separation kettle I and a separation kettle II, rosa roxburghii tratt seed powder is put into the extraction kettle, the pressure of the extraction kettle is 24-26 MPa, and the extraction temperature is 45-48 DEG C; the separation pressure of the separation kettle I is 6.8-7.2 MPa, and the separation temperature is 55.5-56 DEG C; the separation pressure of the separation kettle II is 6.2-7 MPa, the separation temperature is 36.4-42.2 DEG C, the yield of the finally extracted rosa roxburghii tratt seed oil reaches 7.63% and is far higher than 5% in the existing technical scheme, and the comprehensive efficiency is greatly improved. 本发明涉及芳香油技术领域，具体是一种刺梨籽油超临界CO2提取方法。本发明采用超临界CO2提取系统，包括萃取釜、分离釜I和分离釜II，将刺梨籽粉投入萃取釜中，萃取釜压力24-26MPa、萃取温度45-48℃；分离釜I分离压力6.8-7.2MPa、分离温度55.5-56℃；分离釜II分离压力6.2-7MPa、