METHODS OF SAPONIFYING XANTHOPHYLL ESTERS AND ISOLATING XANTHOPHYLLS

This invention relates to a practical and effective process for converting esterified xanthophylls, including zeaxanthin, to non-esterified xanthophylls through saponification. In addition, the invention provides a process for obtaining esterified zeaxanthin in high yields and purities, isolating th...

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Bibliographische Detailangaben
Hauptverfasser:	BARREN, JAMES, REYNHOUT, GREGORY, S, TUINSTRA, JOSHUA, JAMES
Format:	Patent
Sprache:	eng ; fre
Schlagworte:	ACYCLIC OR CARBOCYCLIC COMPOUNDS CHEMISTRY FOODS OR FOODSTUFFS FOODS, FOODSTUFFS, OR NON-ALCOHOLIC BEVERAGES, NOT COVERED BYSUBCLASSES A23B - A23J HUMAN NECESSITIES HYGIENE MEDICAL OR VETERINARY SCIENCE METALLURGY ORGANIC CHEMISTRY PREPARATIONS FOR MEDICAL, DENTAL, OR TOILET PURPOSES PRESERVATION OF FOODS OR FOODSTUFFS, IN GENERAL SPECIFIC THERAPEUTIC ACTIVITY OF CHEMICAL COMPOUNDS ORMEDICINAL PREPARATIONS SPECIFIC USE OF COSMETICS OR SIMILAR TOILETPREPARATIONS THEIR PREPARATION OR TREATMENT, e.g. COOKING, MODIFICATION OFNUTRITIVE QUALITIES, PHYSICAL TREATMENT THEIR TREATMENT, NOT COVERED BY OTHER CLASSES
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Beschreibung
Zusammenfassung:	This invention relates to a practical and effective process for converting esterified xanthophylls, including zeaxanthin, to non-esterified xanthophylls through saponification. In addition, the invention provides a process for obtaining esterified zeaxanthin in high yields and purities, isolating the xanthophylls from interfering substances such as waxes, oils, and fats. A product of this process is a zeaxanthin rich substrate that is suitable for use in foods, nutritional supplements, cosmetics, pharmaceuticals and related products. Cette invention porte sur un procédé pratique et efficace pour convertir des xanthophylles estérifiées, comprenant la zéaxanthine, en xanthophylles non estérifiées par saponification. De plus, l'invention porte sur un procédé d'obtention d'une zéaxanthine estérifiée dans des rendements élevés et des puretés élevées, d'isolement des xanthophylles de substances gênantes telles que des cires, des huiles et des graisses. Un produit de ce procédé est un substrat riche en zéaxanthine qui est approprié en vue d'une utilisation dans des aliments, des suppléments nutritionnels, des produits cosmétiques, des produits pharmaceutiques et les produits apparentés.