A method for extracting grape seed oil and proanthocyanidins

A technology of proanthocyanidins and grape seed oil, which is applied in the direction of fat oil/fat production, fat production, organic chemistry, etc., can solve the problems of low purity of the extract, limited use, high production cost, etc., and achieve simple extraction method, low production cost, The effect of low equipment cost

Inactive Publication Date: 2011-11-30
威海康柏年药业有限公司
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Problems solved by technology

And the existing methods of extracting grape seed oil and proanthocyanidins from grape seeds include: aqueous solution immersion method, organic solvent extraction method, supercritical fluid extraction method and resin purification and other methods, there are low yield and high equipment cost in these methods Or the disadvantages of low purity of the extract, limited use, and high production cost

Method used

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Embodiment Construction

[0012] a. Clean the raw grape seeds, remove impurities such as grape skins, and then crush them to 10-20 meshes after natural drying or drying under reduced pressure;

[0013] b. Put the crushed grape seeds into the container, add 5-8 times the weight of petroleum ether and methanol in a mixed solvent with a weight ratio of 1:1, stir and soak for 5-10 hours, and filter to obtain the extract for use ; During this process, the extraction temperature can be controlled at around 70°C to increase the extraction rate;

[0014] c. Add the extract to the separation container and let it stand until the grape seed oil extract and the proanthocyanidin extract are completely layered, then separate the heavy phase extract and the light phase extract from each other;

[0015] d. Purifying the isolated proanthocyanidin extract through an ultrafiltration membrane with a relative molecular cross section of 500-5000 to obtain proanthocyanidin, and removing the solvent from the isolated grape se...

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Abstract

A method for extracting grape seed oil and proanthocyanidins, involving a method of extracting active ingredients from natural products, soaking crushed grape seeds in a mixed solvent to obtain grape seed oil extract and proanthocyanidin extracts, extracting grape seed oil extracts and proanthocyanidins After liquid separation, the proanthocyanidin extract is purified by an ultrafiltration membrane to obtain proanthocyanidin, and the grape seed oil extract is evaporated to remove the solvent to obtain grape seed oil. The grape seed oil and proanthocyanidins in the grape seeds can be fully extracted by using the above method, the extraction method is simple, the equipment cost is low, the extracted grape seed oil and proanthocyanidins are high in purity, and the production cost is low. The yield of the prepared proanthocyanidins is as high as 86.7%, and the purity is higher than 97.8%. The extraction time is short, and a high extraction rate can be quickly completed to obtain a high-purity product. It is suitable for use by various small and medium-sized enterprises, and it is also suitable for wine production enterprises to recycle and process grape seed leftovers by themselves.

Description

technical field [0001] The invention relates to a method for extracting active ingredients from natural products, in particular to a method for extracting grape seed oil and proanthocyanidins from grape seeds. Background technique [0002] We know that grape seeds account for 5-7% of the weight of the whole grape. Grape seeds mainly come from the leftovers of wine production enterprises. In my country, there are 24,000-32,000 tons of grape seed leftovers every year. At present, these grape seeds have not been processed. Effective utilization, most of them are treated as waste by wine production enterprises, resulting in waste of resources and pollution of the environment. The unsaturated fatty acid in grape seed oil accounts for 90% of the total fatty acid content, and more than 75% of the unsaturated fatty acid is linoleic acid. It is the vegetable oil with the highest linoleic acid content found so far because of its good thermal stability and high smoke point. , is an exc...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C11B1/10C11B1/04C11B1/00C07D311/62
Inventor 张华秋
Owner 威海康柏年药业有限公司
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