Extraction of Wild Rosa davurica Seed Oil by Supercritical CO2
Using wild Rosa davurica seeds as raw materials, a quadratic polynomial mathematical model of the yield of oil from wild Rosa davurica seeds extracted by supercritical CO2 was established by using response surface analysis method through improving the existing supercritical CO2 extraction equipment, and the validity of the model was verified. Response surface analysis of the test data was carried out by Design Expert 8.0 software. The optimum extraction process was obtained as follows: 50 meshes crushing, 28.99 MPa extraction pressure, 55 C extraction temperature, 8 MPa analysis pressure, 34 L/h CO2 flow rate, 2 h extraction, 97.84% extraction rate. Aiming at the problems in the application of Rosa davurica seed oil, the post-treatment method of extraction was put forward, and the pilot scale-up test was carried out. The extraction process was optimized, which provided a reference for the later industrialized production of wild Rosa davurica seed oil.
Keywords: Wild Rosa davurica seed oil, supercritical CO2 extraction