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

The preparation method of jujube pectin

A technology of jujube pectin and jujube, which is applied in the field of preparation of jujube pectin, can solve the problems of difficult purification and decolorization of jujube pectin, and achieve the effects of low extraction temperature, bright color and high quality

Active Publication Date: 2015-12-02
CHANGZHOU MYSUN BIOLOGICAL MATERIALS
View PDF5 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0007] The present invention provides a preparation method of jujube pectin in order to overcome the deficiencies in the prior art that jujube pectin is difficult to decolorize and purify

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

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • The preparation method of jujube pectin

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0030] Take 100g of jujubes, wash them, sterilize them with ultraviolet light, dry them, chop them up, put the dried jujubes into boiling water and heat them for 5 minutes to inactivate pectinase. Then mix the KOH solution with a pH of 10 and absolute ethanol at a mass ratio of 1:1, and add the mixed solution to the red dates at a mass ratio of 5:1. Add the mixture of KOH and absolute ethanol to the red dates at 60°C Soak for 30 minutes to remove most of the pigment, calcium and iron ions and lipid components, and filter out the red dates. Use hydrochloric acid aqueous solution with a pH of 2, bath ratio 1:5, and ultrasonically extract jujube in a warm water bath at a temperature of 30°C for 10 minutes. Filter the extract, concentrate in vacuo to a relative density of 1.0, adjust to neutral, add 30% H 2 o 2 In concentrate (H 2 o 2 : concentrated solution = 1:5) decolorize for 6 hours, add 2 times the volume of 95% ethanol-ammonia water mixture to the decolorized solution t...

Embodiment 2

[0032] Take 500g of red dates and wash them, then sterilize them with ultraviolet light, dry them, chop them up, put the dried red dates into boiling water and heat for 10 minutes to inactivate pectinase. Then mix the KOH solution with a pH of 12 and absolute ethanol at a mass ratio of 1:3, and add the mixed solution to the red dates at a mass ratio of 15:1. Add the mixture of KOH and absolute ethanol to the red dates at 80°C Soak for 60 minutes to remove most of the pigment, calcium and iron ions and lipid components, and filter out the red dates. Use hydrochloric acid aqueous solution with a pH of 3, a bath ratio of 1:15, and ultrasonically extract jujube in a warm water bath at a temperature of 60°C for 40 minutes. Filter the extract, concentrate the filtrate in vacuum to a relative density of 1.5, adjust to neutral, add 30% H 2 o 2 In concentrate (30%H 2 o 2 : concentrate = 1:5) decolorize for 6 hours, add 5 times the volume of 90% ethanol-ammonia water mixture to the ...

Embodiment 3

[0034]Take 1000g of jujubes, wash them, sterilize them with ultraviolet light, dry them at 75°C, chop them, put the dried jujubes into boiling water and heat them for 6 minutes to inactivate pectinase. Then mix the NaOH solution with a pH of 12 and absolute ethanol at a mass ratio of 1:3, and add the mixed solution to the red dates at a mass ratio of 10:1. Add the NaOH and absolute ethanol mixture to the red dates at 80°C Soak for 50 minutes to remove most of the pigment, calcium and iron ions and lipid components, and filter out the red dates. Use sulfuric acid aqueous solution with a pH of 2, bath ratio 1:10, and ultrasonically extract jujube in a warm water bath at a temperature of 50°C for 40 minutes. Filter the extract, concentrate the filtrate in vacuum to a relative density of 1.3, adjust the pH to be neutral, add 30% H 2 o 2 In concentrate (30%H 2 o 2 : concentrated solution = 1:4) decolorize for 8 hours, add 4 times the volume of 91% ethanol-ammonia water mixture ...

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

PropertyMeasurementUnit
degree of esterificationaaaaaaaaaa
Login to View More

Abstract

The invention provides a preparation method of red date pectin, which is used for overcoming the shortcomings that the red date pectin in the prior art is hard to decolorize and purify. Red pigment in the red date is relatively dark, and the red date contains many calcium-iron ions which have a strong sealing effect on pectin; in the presence of the calcium-iron ions, the pectin is not easily dissolved out; and meanwhile, the pectin also contains a great quantity of lip-soluble components which bring great influence on the purity of the pectin. According to the method provided by the invention, in a pretreatment stage, the red date is effectively subjected to decolorization, sealing ion removal and lipid removal by the mixed liquid of alkaline liquid and ethanol; after the extraction liquid is concentrated, the pectin is decolorized by use of the advantages of strong oxidization of hydrogen peroxide, no residue after decomposition and low cost, therefore the shortcomings of heating, filtering and micro-carbon granule residue in an active carbon decolorization method are overcome, and complicated processes are reduced; in a pectin sedimentation stage, the mixed liquid of ethanol and ammonia water is adopted so as to reduce the esterification degree of the pectin during the pectin sedimentation; and finally, high-quality red date low-lipid pectin with bright color can be obtained.

Description

technical field [0001] The invention relates to a preparation method of pectin, in particular to a preparation method of jujube pectin. Background technique [0002] Jujube is a special fruit in China with a long history of cultivation. Jujube is rich in nutrition and comprehensive, and it is a fruit with high nutritional and medicinal value. As a traditional nourishing food, red dates have always been loved by the masses. my country is rich in jujube resources and is a big producer of jujubes, with an annual output of more than 1.8 million tons of jujubes, accounting for more than 95% of the world's total output. But for a long time, jujube processing products have a single form, backward processing methods, and low added value of products. How to enrich the types of jujube products and improve the utilization rate of jujube products is a common concern of scientific and technological workers, and it is also an important issue to help jujube districts effectively realize ...

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 Patents(China)
IPC IPC(8): C08B37/06
Inventor 纪俊玲赵启鹏黄险峰汪媛蒋海华席海涛
Owner CHANGZHOU MYSUN BIOLOGICAL MATERIALS
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