Method for preparing resveratrol extract by using waste residue from grape winery as raw material

A resveratrol and wine technology, which is applied in food preparation, chemical instruments and methods, and preparation of organic compounds, can solve the problems of product added value limitation, poor purity of resveratrol, etc., and alleviate the shortage of raw materials, dyeing, etc. The effect is good and the effect of promoting common development

Active Publication Date: 2011-10-12
HUNAN NUSTREETCARAX
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  • Abstract
  • Description
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Problems solved by technology

Due to the limitation of technology, the purity of resveratrol produced in my country is relatively poor, and it is mostly used or exported in the form of raw material mixture, and the added value of the product is greatly limited

Method used

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  • Method for preparing resveratrol extract by using waste residue from grape winery as raw material
  • Method for preparing resveratrol extract by using waste residue from grape winery as raw material

Examples

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Embodiment 1

[0050] 1. Take 500kg of dried wine dregs after rinsing and drying at 50°C (the resveratrol content in the raw material is 0.04% after testing), break it into small pieces of 5mm, move it to the extraction tank, and add 70% ethanol 2000L, reduced pressure, vacuum degree -0.09Mpa, heated to 70°C, refluxed for 90min, press-filtered while hot, added 2000L 70% ethanol to the dregs for the second extraction, refluxed for 90min under the same conditions, combined the two Concentrate the secondary extract under reduced pressure to 1500L (vacuum degree -0.09MPa, 65°C), let cool and centrifuge for 40min (2000r / min), add the centrifugate to the pretreated 50kg D101 macroporous resin column, flow rate 100L / / h, after loading the column, wash 100L with purified water, and then sequentially elute with 50% and 85% ethanol gradients, and start collecting when the 85% ethanol eluate turns purple, collect a total of 200L 85% ethanol eluate, and It was concentrated to 12 Baume under a vacuum of ...

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Abstract

The invention provides a method for preparing resveratrol extract by using waste residue from a grape winery as a raw material. The process flow of the method comprises the following steps: pre-treating the waste residue from the grape winery; extracting with a solvent; concentrating, and centrifuging; purifying with macroporous resin; concentrating; and carrying out spray drying so as to obtain the finished product. In the extract produced by using the method, the content of resveratrol is more than 10%; the extract is purplish red in color and bright in tincture; and compared with the conventional cuspidatum resveratrol extract at the market, the resveratrol extract in the invention contains a large amount of strong oxidation-resisting polyphenol substances and natural haematochrome harmless to a human body besides the resveratrol, and hardly contains archen. According to the invention, the process is simple, the operation is convenient, the cost is low, the waste residue from the grape winery is turned into wealth, and the officinal value of the waste residue is fully utilized, thereby being beneficial to comprehensive utilization of grape; and the waste residue from the grape winery can be used as a raw material of a medicament or food.

Description

technical field [0001] The invention belongs to the technical field of separation and extraction of active ingredients of natural products, and in particular relates to a method for preparing resveratrol extract by using winery waste residue as a raw material. Background technique [0002] Resveratrol (Resveratrol), also known as stilberol; [0003] 【Chemical name】(E)-5-[2-(4-hydroxyphenyl)-vinyl]-1,3-benzenediol; [0004] 【Molecular formula】C14H1203 [0005] 【Molecular weight】228.25. The structural formula is as follows. [0006] [0007] Resveratrol has two conformations, cis and trans, and the trans structure is its stable structure. Resveratrol is odorless, off-white or white powder, insoluble in cold water, soluble in hot water, ether, ethanol, methanol, ethyl acetate, acetone, etc. The melting point is 256°C to 257°C. [0008] Resveratrol is not only a chemopreventive agent for tumor diseases, but also a chemopreventive agent for reducing platelet aggregation,...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C07C39/21C07C37/70A23L1/275
Inventor 张宝堂邓江
Owner HUNAN NUSTREETCARAX
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