Short chain diesters and process for their production

Details Short chain diesters and process for their production Short chain diesters and process for their production

C - Chemistry, Metallurgy

07

C

C07C 67/08 (2006.01) A23K 1/16 (2006.01) A23K 1/18 (2006.01) A23L 1/275 (2006.01) C07C 35/08 (2006.01) C09B 61/00 (2006.01)

Patent

CA 2311394

Process for producing a product which has a high content of zeaxanthine, luteine or a mixture of both, such as short chain organic acid diesters of zeaxanthine, luteine or a mixture of both, usable essentially for the pigmentation of chicken and the yoke of an egg, as well as an intermediary in the synthesis of cantaxanthine (.beta.,.beta.-carotene-4,4'-dione) and astaxanthine (3,3'-dihydroxy-.beta.,.beta.-caroten-4,4'-dione), by means of the reaction of extracts obtained from French marigolds (Tagetes Erecta L.), or extracts of plants which contain luteine, zeaxanthine or a mixture of both in any proportion, with propionic or acetic anhydride under controlled temperature and pressure conditions.

L'invention concerne un procédé d'obtention d'un produit qui comporte un taux élevé de zéaxanthine, lutéine ou un mélange des deux, comme par exemple des diesters d'acides organiques à chaîne courte, de zéaxanthine, de lutéine ou d'un mélange des deux pouvant être utilisé principalement pour la pigmentation de poulets et de jaune d'oeuf, ainsi que comme intermédiaire lors de la synthèse de cantaxanthine (.beta.,.beta.-carotène-4,4'-dione) et d'astaxanthine (3,3'-dihydroxy-.beta.,.beta.-carotène-4,4'-dione) au moyen de la réaction d'extraits obtenus à partir d'oeillets d'Inde (Tagetes Erecta L.) ou d'extraits de plantes renfermant de la lutéine, zéaxanthine ou un mélange des deux dans des proportions quelconques, avec un anhydre propionique ou acétique dans des conditions contrôlées de température et de pression.

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