Study on Separation and Purification of Stigmasterol From Phytosterol
Phytosterol is a naturally active substance that exists in plants and is widely used in the synthesis of vitamin D,various hormones,and steroid compounds.Currently,industrial production often uses the deodorized distillate of soybean oil as raw material to extract mixed phytosterols through methylation.It is known that the solubility of stigmasterol in cyclohexanone and n-pentanol decreases with the decrease of temperature.In this paper,a solvent crystallization method was used to separate and purify the monomers of stigmasterol from phytosterols.The experimental results showed that the mass fraction of stigmasterol monomer could reach 76.89%and the yield was 46.37%by using a material liquid ratio of 1∶3,heating to 65℃ for dissolution,and then conducting temperature control,temperature reduction,and crystallization.
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