Method for extracting oleuropein from olive leaves

A technology of olive leaves and oleuropein, which is applied in the field of extracting oleuropein, and can solve the problem of insufficient oleuropein products
CN102228514AActive Publication Date: 2011-11-02陕西方舟制药有限公司
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
陕西方舟制药有限公司
Publication Date
2011-11-02

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Abstract

The invention discloses a method for extracting oleuropein from olive leaves, which comprises the following steps of: extracting with water or a mixed solvent of alcohol and water, and then concentrating an extracting solution to separate the extracting solution through three steps in sequence: absorbing through using macroporous resins and eluting with a solvent of the alcohol and the water, absorbing through using decolouration resins, and extracting through using an organic solvent, wherein the macroporous resins have an excellent adsorption effect for the oleuropein and are used for eluting to remove other impurities, and the decolouration resins have an excellent adsorption effect for pigments in the olive extracting solution and are used for absorbing and removing pigments; separating and purifying the oleuropein in the extracting solution step by step; at last, acquiring an oleuropein extract with high content. The content of the oleuropein is more than 40 %, even up to 80-90 %.
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Description

technical field

[0001] The invention belongs to the technical field of oleuropein extraction, and relates to a method for extracting oleuropein from olive leaves. Background technique

[0002] Olive leaf has been used medicinally for thousands of years, with the ancient Greeks using it to cleanse wounds. There are indications that drinking tea from olive leaves has been traditionally used in the Middle East for centuries to treat ailments such as coughs, sore throats, cystitis and fever. Additionally, olive leaf ointment is used to treat boils, rashes, warts and other skin ailments. Antioxidant active ingredients have been extracted from olive oil for a long time. Biologists have found that the antioxidant active ingredients contained in olive leaves are more prominent than olive oil, especially the content of oleuropein in leaves is significantly higher than that in fruits and trees. Scientists have found that the incidence of coronary heart disease and cancer in the Med...

Claims

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