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Preparation technology of grape seed polyphenols

A technology of grape seed polyphenols and production technology, which is applied in the direction of organic chemistry, chemical change-inhibiting compositions, chemical instruments and methods, etc., can solve problems such as unsatisfactory quality, high alcohol consumption, and high labor intensity, and achieve reduction The effect of reducing steam consumption, reducing production cost and improving product quality

Inactive Publication Date: 2007-03-07
浙江瑞康生物技术有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0013] The above process not only takes more than 50 hours for the operation process, but also takes 24 hours for the extraction process, and 16 hours for the secondary water precipitation, which affects the production output
And the concentration process is as many as 4 times, which prolongs the working hours, consumes a lot of energy, and repeatedly heats up to reduce the product quality
[0014] The more prominent problems are: ①Using 5 times of the raw material 70% edible alcohol as a solvent to obtain the grape seed extract, the alcohol consumption is particularly large, which will inevitably lead to an increase in cost
②Remove fine particles and residues by sieve filtration and secondary static water sedimentation, the work efficiency is extremely low
And because the production process is not scientific and reasonable enough, the labor intensity is high, the product yield is low, and the quality is not ideal enough

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0031] 1. Extraction: take the grape seed raw material of average quality, add it to water 5 times the weight of the raw material, heat it to 95°C, maintain 95°C-98°C for 4 hours, take the juice to obtain the first extraction solution; then add 3 times water, heat up to 95°C, maintain 95°C-98°C for 2 hours, obtain the second extraction solution, and combine the second extraction solutions.

[0032] 2. Centrifugation: Use a centrifuge to centrifuge the extract solution that has been cooled to 50°C-70°C to remove fine particles and residues.

[0033] 3. Column passing: Pump the centrate below 50°C into the column filled with macroporous resin, use PN100 type resin for selective adsorption of polyphenols, and the non-adsorbed impurities flow out of the column with water. After all the centrifugate flows through the resin column, deionized water is pumped in to wash the macroporous resin, and then washed with 50% alcohol to obtain an eluent.

[0034] 4. Concentration: recover the...

Embodiment 2

[0038] 1. Extraction: select high-quality grape seed raw materials, add them to water that is 7 times the weight of the raw materials, heat to 95°C, maintain 98°C for 4 hours, take the juice to obtain the first extraction solution; add 5 times more water, heat up to 95°C, maintain 98°C for 2 hours, take the juice to get the second extract, then add 1 times the raw material weight of washing residue, take the washing liquid, and finally combine the second juice and washing liquid to get the extract .

[0039] 2, centrifugation: with 2 in embodiment 1.

[0040] 3. Column passing: pump the centrate below 50°C into the macroporous resin column, and use PN700 type resin to selectively adsorb polyphenols. Rinse the macroporous resin with deionized water, and then elute with 50% alcohol equivalent to the weight of the raw material to obtain an eluent.

[0041] 4. Concentration: same as 4 in Example 1.

[0042] 5. Extraction: Extract with ethyl acetate of 3 times the volume of the ...

Embodiment 3

[0046] 1. Extraction: Select high-quality grape seed raw materials, add them to water 9 times the weight of the raw materials, heat to 95°C, maintain 98°C for 4 hours, take the juice to obtain the first extraction solution; add 6 times the water again, Raise the temperature to 95°C, maintain at 98°C for 2 hours, take the juice to obtain the second extract; then add 1 times the raw material weight of washing residue, take the washing liquid, and finally combine the second juice and washing liquid to obtain the extract.

[0047] 2-6 operation is the same as 2-6 in embodiment 2. Obtain high-quality grape seed polyphenol products with a content of more than 95%.

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Abstract

The invention discloses a manufacturing technology of grape seed polyphenols from grape seed in the brewing industrial leftover bits and pieces, which comprises the following steps: extracting through water instead of alcohol; centrifuging; columning; condensing; extracting; spraying; drying; detecting; packing; adopting large-hole resin column to adsorb polyphenols selectily; extracting the condensed liquid through acetic ester.

Description

technical field [0001] The invention relates to a process for extracting grape seed polyphenols from leftover grape seeds in the winemaking industry by using water as a solvent. Background technique [0002] Grape seed polyphenol is a strong antioxidant, known as the "polyphenol king", its antioxidant effect is 20 times that of VC and 50 times that of VE. Its basic components are complex polymers formed by biochemical reactions of simple substances such as catechin and epicatechin in plants. The lower the degree of polymerization, the more potent the product. Grape seed polyphenols are used as APIs, food additives, health food and cosmetic additives in European and American markets. The prepared medicine has remarkable effects on preventing and treating cardiovascular and cerebrovascular diseases, lowering blood fat and blood pressure, preventing cancer and fighting cancer. In recent years, grape seed polyphenols are constantly opening up new uses, for example: as wine ad...

Claims

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Application Information

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IPC IPC(8): C07D311/62C09K15/06
Inventor 胡云峰
Owner 浙江瑞康生物技术有限公司
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