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Method for preparing resveratrol and viniferin from waste grape vine branches and tendrils

A technology of resveratrol and grapevine, which is applied in the field of preparation of resveratrol and grapevine, can solve the problems of resource waste, ecological environment pollution, etc., and achieve the effect of increasing content, reducing pollution, and high content

Inactive Publication Date: 2014-09-10
HUNAN AGRICULTURAL UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In the process of viticulture, in order to increase the yield of grapes, a large number of grape vines need to be pruned in autumn and winter every year. The cut grape vines are generally disposed of by burning them on the spot, causing pollution to the ecological environment and serious waste of resources

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0010] Put the waste vine branches under the newly pruned branches in autumn and store them in a cool, dry, dark and light-proof room for 60-90 days, and then chop or pulverize the vine branches into coarse powder. Weigh 500g of grape vine powder, add 2L of distilled water, after wetting, ultrasonic for 30 minutes. Then transfer it to a 20L reflux extraction tank, add 5L of edible alcohol to the extraction tank, heat and reflux for extraction for 2 hours, cool down a little and filter through a filter cloth to obtain the extract, repeat the extraction once for the grape vine residues, combine the extracts, and extract at high speed Centrifuge and take the supernatant. Transfer the supernatant to a decompression concentrator and concentrate under reduced pressure to recover ethanol until the extract is obtained, and then put the extract in a vacuum desiccator to dry to obtain the crude extract of grape vines. Select 2L of D101 macroporous adsorption resin, and pretreat the res...

Embodiment 2

[0012] Put the waste branches of grape vines under the newly pruned branches in autumn and store them in a cool, dry, dark and light-proof room for 60-90 days, and then chop or pulverize the branches of grape vines into coarse powder. Weigh 10kg of grape vine powder, add 20L of distilled water, after wetting, ultrasonic for 30 minutes. Then transfer it to a multi-functional extraction tank, add 100L of edible alcohol to the extraction tank, heat and reflux in the multi-functional extraction tank for 2 hours, cool down a little and filter with a filter cloth to obtain the extract, and repeat the extraction of grape vine residues once, combine The extract was centrifuged at high speed, and the supernatant was taken. Transfer the supernatant to a decompression concentrator and concentrate under reduced pressure to recover ethanol until the extract is obtained, and then put the extract in a vacuum desiccator to dry to obtain the crude extract of grape vines. Select 20L of D101 ma...

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Abstract

The invention discloses a method for preparing resveratrol and viniferin from waste grape vine branches and tendrils obtained through pruning in autumn. The method comprises the steps: with fresh grape branches and tendrils obtained through pruning as raw materials, storing in a shady, cool and dark place, detecting contents of resveratrol and viniferin on time, after a given period, performing ultrasonic-assisted extraction, and performing adsorption separation through macroreticular resin to respectively obtain resveratrol and viniferin products. The yield of the obtained resveratrol reaches 1.1 percent, the content of the resveratrol reaches above 22 percent, the yield of the viniferin reaches 1.0 percent, and the content of the viniferin reaches above 20 percent. The method is capable of remarkably increasing the contents of the resveratrol and the viniferin in grape vines, low in energy consumption, high in separation efficiency, free from using an organic solvent, capable of recycling waste materials so that the environment pollution is reduced, simple in process and suitable for industrialized product.

Description

technical field [0001] The invention relates to a method for preparing resveratrol and grapevine from waste grape vines, in particular to a raw material pretreatment processing technology combined with macroporous adsorption resin separation technology to simultaneously prepare resveratrol from fresh grape vine waste Alcohol and grapevine method. Background technique [0002] Resveratrol has been found to exist in various parts of grape plants in recent years, and it has shown excellent characteristics in plant disease resistance, human cardiovascular disease and cancer prevention. The dimer of resveratrol, grapevine, has been proved to have similar activity to resveratrol in terms of anti-inflammation, antibacterial, anti-cancer, anti-oxidation, and prevention of cardiovascular diseases, even higher than that . Due to the low content of resveratrol and grapevine in grape plants (leaves and fruits), only about five parts per million, the development cost is very high. Curr...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C07C39/21C07C37/70C07D307/83
CPCC07C37/004C07D307/83
Inventor 谢红旗曾建国刘薇
Owner HUNAN AGRICULTURAL UNIV
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