Patent ID: 9580371
Date: 2017-02-28
CPC Classifications: A23L,A23V,A61K,B01D,C07C

Claim:
1. A method of at least partially separating at least one monohydroxycarotenoid ester from at least one dihydroxycarotenoid ester, comprising continuously extracting, wherein the continuous extraction is carried out by Soxhlet extraction, the at least one monohydroxycarotenoid ester from a mixture of the at least one monohydroxycarotenoid ester and the at least one dihydroxycarotenoid ester with an alcohol to give an alcoholic solution enriched in the at least one monohydroxycarotenoid ester, wherein the at least one monohydroxycarotenoid ester is a α-cryptoxanthin ester or a β-cryptoxanthin ester, and wherein the at least one dihydroxycarotenoid ester is a zeaxanthin diester or a lutein diester.