METHOD FOR ISOMERIZING LYCOPENE IN PRESENCE OF THIOUREA

PROBLEM TO BE SOLVED: To provide an improved isomerization method of Z-isomer which exists in a synthetic lycopene used as an additive in food or as an antioxidant in pharmaceutical products.SOLUTION: The method for isomerizing Z-lycopenes in a mixture which contains less than 50% of the whole E lyc...

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Hauptverfasser:	PADAKANDALA GUNDU RAO, KODALI RAMESH BABU, DIVI MURALI KRISHNA PRASAD, BOLNENI NAGESWARA RAO
Format:	Patent
Sprache:	eng
Schlagworte:	ACYCLIC OR CARBOCYCLIC COMPOUNDS APPARATUS THEREFOR CHEMISTRY FOODS OR FOODSTUFFS FOODS, FOODSTUFFS, OR NON-ALCOHOLIC BEVERAGES, NOT COVERED BYSUBCLASSES A23B - A23J GENERAL METHODS OF ORGANIC CHEMISTRY HUMAN NECESSITIES METALLURGY ORGANIC CHEMISTRY PRESERVATION OF FOODS OR FOODSTUFFS, IN GENERAL 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:	PROBLEM TO BE SOLVED: To provide an improved isomerization method of Z-isomer which exists in a synthetic lycopene used as an additive in food or as an antioxidant in pharmaceutical products.SOLUTION: The method for isomerizing Z-lycopenes in a mixture which contains less than 50% of the whole E lycopene (whole trans) and more than 50% of Z-lycopenes without applying pressure at a temperature lower than 100°C in a suitable polar solvent medium in the presence of thiourea as a catalyst is provided. Preferably, the method for isomerizing Z-lycopenes in the mixture in which the mixture of the lycopenes is a refined or partially refined solid, or a solution or a suspension in organic solvent, obtained by an arbitrary synthesizing method is provided.