Organic compounds -- part of the class 532-570 series – Organic compounds – Fatty compounds having an acid moiety which contains the...
Reexamination Certificate
2006-09-26
2006-09-26
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
07112689
ABSTRACT:
The present invention relates to a method for the production of a lutein-fatty acid ester concentrate of high purity by dissolving marigold oleoresin in a ketone solvent such as acetone, cooling the solution, and removing wherefrom a ketone solvent-insoluble component to uniform the quality of oleoresin, followed by dissolving the acetone-soluble portion obtained as above in butanol, cooling the solution, removing a butanol-soluble impurity after adding or without adding one or more members selected from the group consisting of water, methanol, ethanol and a mixture thereof, and washing the resulting butanol-insoluble with ethanol.
REFERENCES:
patent: 4048203 (1977-09-01), Philip
patent: 6191293 (2001-02-01), Levy
patent: 97/23436 (1997-07-01), None
patent: 98/45241 (1998-10-01), None
J. K. Tycskowski et al., “ Research Notes: Preparation of Purified Lutein and its Diesters from Extracts of Marigold (Tagetes erecta)”, Poultry Science, vol. 70, No. 3, pp. 651-654, 1991.
Database WPI, Section Ch, Week 200235, Derwent Publications Ltd., London, GB; AN 2002-311245 XP0022522730 & JP 2002- 030068 A, Jan. 29, 2002 * abstract *.
T. Phillip et al., “A Process for the Purification of Lutein-Fatty Acid Esters from Marigold Petals”, Journal of Food Science, vol. 41, No. 1, pp. 163-164, 1976.
Ai-Wu Sheng et al., “Preliminary Studies on the Extraction Methods and Characteristics of Marigold Pigments”, Journal of Zhongkai Agritechnical College, vol. 14, No. 4, pp. 38-41, 2001 with English abstract.
Harada Koichi
Sadano Shin
Sonoda Tadamichi
Carr Deborah D.
Riken Vitamin Co. Ltd.
Wenderoth , Lind & Ponack, L.L.P.
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