Process for purification of free xanthophylls

Details Process for purification of free xanthophylls Process for purification of free xanthophylls

2006-12-18

2009-12-08

Tate, Christopher R. (Department: 1655)

Drug, bio-affecting and body treating compositions

Plant material or plant extract of undetermined constitution...

C424S777000

Reexamination Certificate

active

07629007

ABSTRACT:
A simple and economic method of extracting free xanthophylls from plant material, particularly marigold petals and boxthorn berries, is described. The method relies upon salting out of aqueous components from a saponified oleoresin, which limits the use of organic solvents during the extraction and is also very economical.

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International Search Report dated Jan. 23, 2008.

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