Method for producing carotenoids

Details Method for producing carotenoids Method for producing carotenoids

2003-11-17

2008-05-27

Witherspoon, Sikarl A. (Department: 1621)

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

Organic compounds

Oxygen containing

C568S378000, C568S673000, C568S824000, C560S183000

Reexamination Certificate

active

07378558

ABSTRACT:
A process for preparing carotenoids, in which the process includes reacting a dialkoxy dialdehyde in a double Wittig condensation with a phosphonium salt of or in a double Wittig-Horner condensation with a phosphonate. The carotenoids include, for example, β-carotene, zeaxanthin, canthaxanthin, astaxathin, lycopene and croceptin, which are useful as nutraceuticals, food colorants, and feed additives.

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patent: 6747177 (2004-06-01), Ernst et al.
patent: 0 908 449 (1999-04-01), None

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