Process for the preparation of an xanthophyll

Details Process for the preparation of an xanthophyll Process for the preparation of an xanthophyll

2006-05-09

2006-05-09

Witherspoon, Sikarl A. (Department: 1621)

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

Organic compounds

Oxygen containing

C568S347000, C568S377000

Reexamination Certificate

active

07041854

ABSTRACT:
The present invention relates to a process for the preparation of an xanthophyll, and in particular to a process for the preparation of an xanthophyll through the oxidation of a carotenoid in the presence of hydrogen peroxide and an iodine-containing compound. In particular, the process of the invention applies to the oxidation of beta-carotene to produce canthaxanthin, and to the oxidation of lutein or zeaxanthin to produce astaxanthin.

REFERENCES:
patent: 4105855 (1978-08-01), Schulz et al.
patent: 4212827 (1980-07-01), Paust et al.
patent: 4585885 (1986-04-01), Bernhard et al.
Ma et al. Enhanced production of free trans-astaxanthin by oxidative stess in the cultures of the green microalgaChlorococcumsp. Process Biochemistry, 2001, vol. 36, p 1175-1179.
J. Paust; “Recent progress in commercial retinoids and carotenoids”; Pure & Appl. Chem., vol. 63, No. 1; 1991; pp 45-58.

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