Research on the extraction of phytosterol in pine pollen by supercritical CO_2 extraction technology
The article mainly studies the process parameters of the supercritical CO2 extraction of phytosterol in pine pollen.As an index of phytosterol in the extraction,the test has chosen the proper factors and levels through the pre-test,and made the further observations on the interaction between them by orthogonal test.The optimized technology of supercritical CO2 extraction of phytosterol in pine pollen are CO2 flow 25 L/h,extraction time 2 h,the separation I pressure 22 MPa and separation I temperature 40 ℃.The content of phytosterol in the extractions has reaches as much as 8.6%,using the optimized process parameters.