Process for the preparation of lutein ester concentrate

Details Process for the preparation of lutein ester concentrate Process for the preparation of lutein ester concentrate

2007-11-20

2007-11-20

Carr, Deborah D. (Department: 1621)

Organic compounds -- part of the class 532-570 series

Organic compounds

Fatty compounds having an acid moiety which contains the...

Reexamination Certificate

active

11348141

ABSTRACT:
A method for concentrating trans-lutein esters from marigold oleoresin, which includes blending the oleoresin with a solvent and a co-solvent of lower alkanols and recovering a precipitate enriched with trans-lutein esters at a temperature of above 22° C. The recovery of the trans-lutein esters is greater using the alkanol blend than when using only a lower alkanol in the said blend. The process is most useful using a lower-grade, commercially available oleoresin, thereby helping small producers, who do not have access to higher-grade oleoresin made through backward integration to marigold cultivation and harvest.

REFERENCES:
patent: 4048203 (1977-09-01), Philip
patent: 6191293 (2001-02-01), Levy
patent: 6737535 (2004-05-01), Kumar, T.K.
patent: 2003/0130531 (2003-07-01), Sadano et al.
patent: 2006/0020030 (2006-01-01), Ornelas-Cravioto et al.
patent: WO 02094772 (2002-11-01), None

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