Looking for breakthrough ideas for innovation challenges? Try Patsnap Eureka!

Extraction method for grape seed polyphenols

A technology of grape seed polyphenols and extraction method, which is applied in the field of grape by-product processing, can solve the problems of heavy purification burden, increased energy consumption, and low extraction rate, and achieve the effects of facilitating subsequent purification, saving water resources, and improving extraction rate

Inactive Publication Date: 2013-12-11
XINJIANG WESTERN ANIMAL HUSBANDRY
View PDF6 Cites 7 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

This method is more effective for extracting tannins in grape seeds, but the extraction effect on proanthocyanidins in grape seeds is poor, and the extraction rate is low, usually lower than 80%, and the purity of the product is low, which will also cause subsequent The burden of purification is heavy, which further increases the energy consumption

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0018] Transport 1,000 kg (approximate number, adjusted according to the situation) of grape seeds to the extraction tank through the feed elevator and feed auger, add 1.5 tons of pure water, check whether the manhole and feed valve are closed, and turn on steam to heat , When the liquid temperature rises to 90 ℃ ~ 95 ℃ close the steam valve to stop heating. And open the circulation in the extraction tank, keep the temperature in the extraction tank at 90-95°C for two hours, and press the material to the liquid storage tank. The extraction rate of polyphenols in grape seeds can reach 92.5%.

[0019] After the extraction is completed, the slag is discharged and the extraction tank is cleaned.

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

PUM

No PUM Login to View More

Abstract

The invention discloses an extraction method for grape seed polyphenols, which comprises the following steps: 1) grape seed raw material is dried and then pulverized; 2) the pulverized grape seed raw material is placed in leachate to be subjected to leaching treatment to obtain grape seed raw juice; 3) the grape seed raw juice is filtered to obtain grape seed polyphenols. The extraction method has the benefits as follows: a water-ethanol double aqueous phase system is adopted to replace the traditional leaching method that polyphenols in grape seeds are extracted by a single solvent; as the polarities of leaching solvents can be adjusted better through solvent compounding, not only is the extraction rate of polyphenols in grape seeds increased, but also the selectivity of solvents is improved so as to facilitate follow-up purification, what's more, the solid to liquid ratio of the traditional technology is reduced from 1:20 to 1:1.5 in the whole extraction process, and massive water resource can be saved in the extraction technology.

Description

technical field [0001] The invention relates to the field of grape by-product processing, in particular to a method for extracting grape seed polyphenols. Background technique [0002] Traditional grape seed proanthocyanidins and tannins are extracted using only a single water solvent extraction method. The extraction process often only extracts proanthocyanidins or tannins, and the yield and purity of proanthocyanidins and tannins are not high. Most of the existing methods are as follows: 1. Extraction of polyphenolic substances in grape seeds: solvent leaching method: grape seeds→drying→crushing→leaching (solvent water, solid-liquid ratio 1:20)→filtering→polyphenolic substances in grape seeds crude extract. This method is more effective for extracting tannins in grape seeds, but the extraction effect on proanthocyanidins in grape seeds is poor, and the extraction rate is low, usually lower than 80%, and the purity of the product is low, which will also cause subsequent T...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

Application Information

Patent Timeline
no application Login to View More
Patent Type & Authority Applications(China)
IPC IPC(8): C07G99/00
Inventor 陈红莉侯扶琴冯欣璐于乾坤毕磊郑炯罗鹏
Owner XINJIANG WESTERN ANIMAL HUSBANDRY
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Patsnap Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Patsnap Eureka Blog
Learn More
PatSnap group products

Browse by: Latest US Patents, China's latest patents, Technical Efficacy Thesaurus, Application Domain, Technology Topic, Popular Technical Reports.

© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap|About US| Contact US: help@patsnap.com