Process for isolation, purification, and recrystallization...

Details Process for isolation, purification, and recrystallization... Process for isolation, purification, and recrystallization...

2007-02-05

2009-10-13

Price, Elvis O (Department: 1621)

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

Organic compounds

Oxygen containing

C568S816000, C568S822000, C568S823000, C568S824000, C568S832000, C568S834000, C568S810000, C568S819000, C568S700000, C568S913000, C435S067000, C426S540000, C426S310000

Reissue Patent

active

RE040938

ABSTRACT:
A method of isolating, purifying and recrystallizing substantially pure lutein, preferably from saponified marigold oleoresin in its pure free form, apart from chemical impurities and other carotenoids. Lutein may be used as an analytical standard or in cancer prevention trials and as a safe and effective color additive for human food.

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patent: 6743953 (2004-06-01), Kumar et al.
patent: 0096032 (1983-06-01), None
Kuzmicky, et al., Pigmentation Potency of Xanthophyll Sources, Poultry Science, Mar. 1968, pp. 389-397, vol. XLVII, No. 2.
Tyczkowski, et al., Preparation of Purified Lutein and Its Diesters from Extracts of Marigold (Tagetes erecta), Department of Poultry Science, North Carolina University, Aug. 2, 1990, pp. 651-654, vol. 70.
The Merck Index, 9thEdition, p. 1298, 1976.
Karrer et al., Helvetica. Chimica, Acta, vol. 30, pp. 531-535, 1947.
Karrer, Chemical Abstracts, vol. 41, No. 13, 4141f, Jul. 10, 1947.

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