Title: Esterification of xanthophylls
Application Number: 03805645 Application Date: 2003.03.26
Publication Number: 1639287 Publication Date: 2005.07.13
Approval Pub. Date: Granted Pub. Date:
International Classifi-cation: C09F7/00;C09F7/06
Applicant(s) Name: Prodemex S. A. de C. V. Address:
Inventor(s) Name: Cordona Mario D. T.;Rodriguez Gustavo
Attorney & Agent: zhao rongmin lu xiaolong
Abstract:
    Lutein and zeaxanthin, the main carotenoids in marigold flowers, and capsanthin and capsorubin, the main carotenoids in red peppers are esterified mainly with C-18 fatty acids. The pigments were re-esterified without isolating them from the natural saponified extract using carboxylic acids in the range of C-1 to C-12 and their corresponding metallic salts in the presence of a catalyzing agent. Both the diester and monoester forms were obtained. It is expected that the pigment esters with a fatty acid of 12 or less carbons will have a better digestibility than the esters of xanthophylls in their natural state and better stability than the hydrolyzed xanthophylls. This will result in a better pigmentation capacity of the carotenoids for poultry or aquaculture.
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