Use of carotenoid aggregates as colorants

Details Use of carotenoid aggregates as colorants Use of carotenoid aggregates as colorants

1999-01-07

2004-12-07

Pryor, Alton N. (Department: 1616)

Drug, bio-affecting and body treating compositions

Preparations characterized by special physical form

Cosmetic, antiperspirant, dentifrice

C424S439000, C514S675000, C514S762000

Reexamination Certificate

active

06827941

ABSTRACT:

The present invention relates to the use of carotenoid aggregates as colorants.
Carotenoids occur widely in nature and are already being used in various forms for coloring foods, cosmetics and nonfood articles. However, possible uses are greatly limited by the fact that carotenoids are generally very light- and oxygen-sensitive. In practice, therefore, carotenoid-colored preparations have to be protected against light and oxygen, for example by degassing or by storage in opaque vessels.
It is an object of the present invention to provide stable carotenoid colorants without the abovementioned disadvantages.
We have found that this object is achieved according to the present invention by using carotenoid aggregates as colorants.


REFERENCES:
patent: 5591343 (1997-01-01), Kitaoka et al.
patent: 63145367 (1988-06-01), None
patent: 08089280 (1996-04-01), None
Photochem . . . vol. 19, pp435-441, Song et al.
J. Photochem. Photobiol. B Biol, 21 (1993) 229-234, Ruban et al.
J. Raman Spectroscopy, vol. 6, No. 6, 1997 Salares et al., 282-288.

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