METHOD OF OBTAINING HIGH-VALUE-ADDED COMPOUNDS FROM OLIVE LEAVES (Machine-translation by Google Translate, not legally binding)

The invention relates to a method of obtaining high-value-added compounds from olive leaves. The inventive method comprises the following steps, namely: a first step in which the leaves are subjected to solid-liquid extraction with organic solvents, preferably hexane or ethanol, and the crude extrac...

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Bibliographische Detailangaben
Hauptverfasser:	REGLERO RADA GUILLERMO J, IBANEZ EZEQUIEL ELENA, TABERA GALVAN J. JAVIER, RUIZ RODRIGUEZ ALEJANDRO, ALBI VIRELLA TOMAS, SENORANS RODRIGUEZ FCO JAVIER
Format:	Patent
Sprache:	eng ; spa
Schlagworte:	ANIMAL AND VEGETABLE OILS, FATS, FATTY SUBSTANCES AND WAXES CANDLES CHEMISTRY DETERGENTS ESSENTIAL OILS FATTY ACIDS THEREFROM FOODS OR FOODSTUFFS FOODS, FOODSTUFFS, OR NON-ALCOHOLIC BEVERAGES, NOT COVERED BYSUBCLASSES A23B - A23J HUMAN NECESSITIES HYGIENE MEDICAL OR VETERINARY SCIENCE METALLURGY PERFORMING OPERATIONS PERFUMES PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL PREPARATIONS FOR MEDICAL, DENTAL, OR TOILET PURPOSES PRESERVATION OF FOODS OR FOODSTUFFS, IN GENERAL PRODUCING (PRESSING, EXTRACTION), REFINING AND PRESERVINGFATS, FATTY SUBSTANCES (e.g. LANOLIN), FATTY OILS AND WAXES,INCLUDING EXTRACTION FROM WASTE MATERIALS SEPARATION 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 TRANSPORTING
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Beschreibung
Zusammenfassung:	The invention relates to a method of obtaining high-value-added compounds from olive leaves. The inventive method comprises the following steps, namely: a first step in which the leaves are subjected to solid-liquid extraction with organic solvents, preferably hexane or ethanol, and the crude extract thus obtained is vacuum concentrated and a second step in which the crude extract is fractionated by means of supercritical CO2 countercurrent column extraction and separation into two cells with different fixed pressure and/or temperature conditions which alter the dissolving power of the CO2, thereby precipitating different compounds. The invention can be used to extract natural products of interest from olive leaves for the food, pharmaceutical and cosmetic industries, such as waxes, squalene, beta -carotene, alpha -tocopherol, oleuropein, hydroxytyrosol and other phenolic compounds, beta -sitosterol, alpha - and beta -amyrin, erythrodiol, uvaol and other terpenic alcohols, oleanolic acid, ursolic acid and maslinic acid, among others. (Machine-translation by Google Translate, not legally binding) Procedimiento para obtener compuestos de alto valor añadido a partir de hoja de olivo. Mediante el procedimiento de la invención se obtienen compuestos de alto valor añadido a partir de hoja de olivo. En una primera etapa se someten las hojas a extracción sólido-líquido con disolventes orgánicos, preferentemente hexano o etanol, y se concentra a vacío el extracto bruto obtenido. En una segunda etapa se realiza un fraccionamiento de ese extracto bruto por extracción en contracorriente en columna con CO{sub,2} supercrítico y separación en dos celdas en que se fijan diferentes condiciones de presión y/o temperatura que cambian el poder disolvente del CO{sub,2}, precipitando diferentes compuestos. El procedimiento de la invención permite extraer de la hoja de olivo productos naturales de interés para las industrias alimentaria, farmacéutica y cosmética, como ceras, escualeno, {be}-caroteno, {al}-tocoferol, oleuropeina, hidroxitirosol y otros compuestos fenólicos, {be}-sitosterol, {al} y {be}-amirina, eritrodiol, uvaol y otros alcoholes terpénicos, ácido oleanólico, ácido ursólico y ácido maslínico, entre otros.