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Method for extracting oil and procyanidin from grape seeds

A proanthocyanidin and oil extraction technology, which is applied in the direction of oil/fat production, fat production, anti-toxic agents, etc., can solve the problems of relatively high operating conditions, solvent residues, and complex production equipment, so as to improve extraction efficiency, reduce extraction temperature, The effect of reducing the extraction cost

Inactive Publication Date: 2012-06-27
NINGXIA UNIVERSITY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] At present, there are mainly the following methods for extracting oil or proanthocyanidins from grape seeds: solvent extraction, supercritical CO 2 Extraction method, microwave extraction method, etc., the main disadvantages of these extraction methods are: the main defects of solvent extraction method are that the organic solvent consumption is large, the time is long, the production cost is high, and the obtained products more or less have solvent residues. , and the pollution caused by the leakage of solvents to the environment, which brings about complex production equipment, high investment and operation costs, and many other problems; supercritical CO 2 The shortcomings of the extraction method are mainly high cost and relatively high requirements for operating conditions; the shortcomings of the microwave extraction method such as the selection of the extraction medium have a greater impact on the product components, resulting in the loss of some components
Moreover, proanthocyanidins have poor high temperature resistance, instability, and easy loss of activity, so there are strict requirements on the extraction method, and in the above-mentioned existing methods, only a kind of substance in grape seeds is extracted, such as grape seed oil or proanthocyanidins, which is a waste of resources. kind of waste

Method used

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  • Method for extracting oil and procyanidin from grape seeds
  • Method for extracting oil and procyanidin from grape seeds
  • Method for extracting oil and procyanidin from grape seeds

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0021] 1) Preparation of grape seeds: the grape skin pomace after recovering the wine liquid is dried to remove the remaining moisture until the water content is less than 2%, and then the grape skins are separated from the grape seeds to obtain the grape seeds;

[0022] 2) Pulverization: pulverize the air-dried grape seeds to 80 meshes and set aside.

[0023] 3) Ultrasonic extraction of grape seed oil: according to the solubility of grape seed oil and proanthocyanidins, first extract grape seed oil from grape seeds, weigh 2 g of 80-mesh grape seed powder after crushing, add 14 ml of petroleum ether with a volume fraction ≥ 99.5%, Place it in an ultrasonic extractor for extraction, the extraction temperature is 60°C, and the extraction time is 15 minutes. After the extraction is completed, filter the extract to obtain the filtrate and filter residue, concentrate the filtrate and recover the solvent, and use the recovered solvent to extract the filter residue again. The extract...

Embodiment 2-3

[0027] Extraction of grape seed oil: on the basis of implementation case 1, change the volume fraction of extraction solvent, extraction temperature (°C), extraction time (min), extraction times, solid-liquid ratio (g / ml), particle size of grape seed raw material Size and other process parameters, the specific implementation parameters are shown in the following table:

[0028]

[0029] In the above-mentioned Examples 2-3, the parameters for extracting proanthocyanidins from the filter residue after extracting grape seed oil are: volume fraction of extraction solvent, extraction temperature (°C), extraction time (min), extraction times, solid-liquid ratio (g / ml), the specific implementation parameters are shown in the following table:

[0030]

[0031] The purification of proanthocyanidins was the same as in Case 1.

Embodiment 4-5

[0033] Extraction of grape seed oil: On the basis of the implementation of Case 2-3, other extraction conditions remain unchanged, only the volume fraction of the extraction solvent and the particle size of the grape seed raw material are changed, and the specific implementation parameters are as follows:

[0034]

[0035] Extraction of proanthocyanidins: On the basis of the implementation of Case 2-3, other extraction conditions are fixed, only the volume fraction of the extraction solvent and the particle size of the grape seed raw material are changed. The specific implementation parameters are as follows:

[0036]

[0037] The purification of proanthocyanidins is the same as in Example 1.

[0038] In the above examples, the purification of proanthocyanidins can be carried out using existing techniques.

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Abstract

The invention relates to a technology for extracting effective components from a natural product and in particular relates to a method for extracting oil and procyanidin from grape seeds. The method comprises the following process steps: preparing grape seeds, grinding, performing ultrasonic extraction to obtain grape seed oil, and performing ultrasonic extraction to obtain procyanidin. The method integrates the characteristics of an ultrasonic extraction method and a double-solvent extraction method, has the characteristics of low solvent dosage, low extraction cost, high extraction efficiency, less influence on the environment and the like, and can be used for effectively avoiding the problem that in the extraction process of the prior art, the bioactivities of grape seed oil and procyanidin are damaged.

Description

Technical field [0001] The invention relates to a process for extracting active ingredients from natural products, in particular to a method for extracting oil and proanthocyanidins from grape seeds. Background technique [0002] Proanthocyanidins, the English name is Oligomeric Proantho Cyanidins (OPC), is a bioflavonoid with a special molecular structure, is currently internationally recognized as the most effective natural antioxidant for removing free radicals in the human body. It is generally a reddish-brown powder with a slight gas and astringent taste, soluble in water and most organic solvents. Typically grape seed extract or French maritime pine bark extract. Proanthocyanidin is a new type of high-efficiency antioxidant, the most powerful free radical scavenger found so far, and has very strong activity in vivo. Experiments have proved that OPC's ability to resist free radical oxidation is 50 times that of vitamin E and 20 times that of vitamin C, and it can be a...

Claims

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Application Information

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IPC IPC(8): C11B1/10C11B1/00C11B1/04C07D311/62A61P39/06
Inventor 王宏胡奇林郭燕
Owner NINGXIA UNIVERSITY
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