Method for the purification of marigold oleoresin

Details Method for the purification of marigold oleoresin Method for the purification of marigold oleoresin

2007-05-08

2007-05-08

Drodge, Joseph (Department: 1723)

Drug, bio-affecting and body treating compositions

Natural resin, gum, or balsam as active ingredient

C210S634000, C424S764000, C424S778000, C514S912000, C554S021000, C554S206000, C554S208000

Reexamination Certificate

active

10665147

ABSTRACT:
Marigold oleoresin having a low viscosity and a high lutein content which can be filled in soft capsules can be obtained according to the method of the present invention, which is characterized by combining a step of subjecting oleoresin to supercritical fluid extraction and a step of dissolving oleoresin in a ketone solvent, cooling the solution and removing the ingredient which precipitated in solution.

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