Method of separating and purifying xanthophyll fatty acid esters from marigold oleoresin

摘要

This invention teaches a method of separating and purifying xanthophyll fatty acid ester from marigold oleoresin. The content of xanthophyll fatty acid ester in the residue obtained by this method is 70-80%. And the content of all-trans xanthophyll ester is more than 90-95%. This produces content fewer residual solvents. The yield is high, the process is easy to perform, and is suitable for large-scale industrial production.