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Method for quickly extracting vitis amurensis rupr seed procyanidin

A proanthocyanidin and extraction method technology, applied in the direction of organic chemistry and the like, can solve the problems of long time consumption, many extraction impurities and high energy consumption, and achieve the effects of low price, simple process and high content of biologically active components.

Inactive Publication Date: 2016-07-13
JILIN UNIV
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Problems solved by technology

[0004] At present, the main extraction methods of proanthocyanidins include solvent extraction, ultrasonic method, microwave method, supercritical CO 2 Extraction methods, etc., but most of them have problems such as long time-consuming, high energy consumption, and more impurities in the extraction

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Embodiment Construction

[0021] Below in conjunction with embodiment the present invention is described in further detail.

[0022] A rapid extraction method of proanthocyanidins from grape seeds, the process is as follows: grape skin residue after wine making → raw material pretreatment → sodium hexametaphosphate-assisted high-voltage pulse electric field extraction → centrifugation → vacuum concentration → freeze-drying → crude proanthocyanidin extract.

[0023] The following are the specific implementation steps:

[0024] (1) Raw material pretreatment: the grape seed is separated from the skin dregs after brewing, freeze-dried, pulverized, degreased, and passed through a 100-mesh sieve for subsequent use;

[0025] (2) Sodium hexametaphosphate-assisted high-voltage pulse electric field extraction: take a certain amount of grape seed powder, add 63% ethanol aqueous solution as the extraction solvent at a ratio of solid to liquid (g / mL) of 1:20, and add 0.4% (w / v) sodium hexametaphosphate as an auxi...

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Abstract

The invention discloses a method for quickly extracting vitis amurensis rupr seed procyanidin.The method mainly includes the steps that vitis amurensis rupr seeds are separated from pomace after wine making, vitis amurensis rupr seed powder is obtained through freezing drying, smashing, degreasing and screening, a 50-70% ethanol aqueous solution is added as an extraction solvent according to the material-liquid ratio (g / mL) of 1:(15-25), 0.3-0.5% (w / v) sodium hexametaphosphate is added at the same time as an assistant agent, the mixture is evenly stirred, passes a high-voltage pulse electric field and is centrifuged under the conditions that the number of pulses is 8-12 and the intensity of the electric field is 20-30kV / cm, supernatant is subjected to vacuum concentration and freezing drying, and a target product is obtained.Compared with a conventional extraction method, the technology can obviously increase the procyanidin field, shorten extraction time and reduce energy consumption, and the high-voltage pulse electric field serves as a non-heat-processing technology so that the activity of procyanidin can be well kept.

Description

technical field [0001] The invention belongs to the field of extracting active substances of natural products, and in particular relates to a method for rapidly extracting proanthocyanidins from grape seeds separated from grape wine pomace. Background technique [0002] my country is the only country in the world that cultivates wild grapes in a large area and is rich in resources. Mountain grapes have strong cold resistance and excellent wine quality. They are the main raw materials for the wine industry in Northeast China. However, except for a small amount of skin dregs produced after fruit wine making, most of them are directly discarded, which not only wastes resources, but also And pollute the environment. The skin dregs of mountain grape wine still contain a lot of nutrients and active ingredients, especially the proanthocyanidins in the seeds are extremely rich. Therefore, research on extracting proanthocyanidins from the by-product seeds of Vitis vinifera can effe...

Claims

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Application Information

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IPC IPC(8): C07D311/62
CPCC07D311/62
Inventor 董周永李明月徐敏周亚军任辉田刚
Owner JILIN UNIV
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