Super large pore ball shaped cellulose fixed tannin adsorbent and its preparation method and application

A cellulose and ultra-large pore technology, applied in chemical instruments and methods, preparation of alcoholic beverages, other chemical processes, etc., can solve the problems of long preparation routes, high environmental hazards, complicated operations, etc., and achieve mild conditions and hydraulic Good features, simple and safe operation

Inactive Publication Date: 2005-08-24
EAST CHINA UNIV OF SCI & TECH +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0010] However, these methods have long preparation routes and complicated operations, and some of them also use toxic cyanogen bromide, which is very harmful to the environment.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0024] (1) Epoxy activation Take 10g of super-large-porous spherical cellulose and place it in a conical flask, add 50mL of 0.5mol / L sodium hydroxide solution, 20mL of 1,4-butanediol diglycidyl ether and sodium dodecylsulfonate Mix and react with constant temperature shaking at 40°C for 12 hours. Filtrate with a sand core funnel, soak and wash with acetone, and then wash with a large amount of deionized water to obtain epoxy-activated super-large-porous spherical cellulose.

[0025] (2.) Ligand coupling Take 10g of epoxy-activated ultra-large-porous spherical cellulose, add 60ml of 5% tannic acid aqueous solution, add an appropriate amount of sodium borohydride solution dropwise, shake and react at 40°C for 12 hours under nitrogen protection, and filter after the reaction , washed with dilute hydrochloric acid, and then washed with a large amount of deionized water to obtain super-macroporous spherical cellulose-immobilized tannins.

[0026] The amount of tannin immobilized o...

example 1

[0028] The tannic acid in Example 1 was changed to persimmon tannin, and the preparation method was the same, and the amount of tannin fixed on the ultra-large porous spherical cellulose was 0.17mmol / g dry adsorbent.

Embodiment 3

[0030]The 1,4-butanediol diglycidyl ether in example 1 is changed into ethylene glycol diglycidyl ether, and the preparation method is the same, and the ligand density that obtains super-macroporous spherical cellulose-immobilized tannin is 0.13mmol / g dry adsorption agent.

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PUM

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Abstract

A macroreticular spheric cellulose fixed tannin as the adsorbent used in chromatographic column for preparing wine or beverage is prepared by using the diepoxy glicide ether as arm to fix tannin on macroreticular spheric cellulose as carrier.

Description

technical field [0001] The invention relates to a super-macroporous spherical cellulose-immobilized tannin adsorbent, a preparation method thereof and an application in the post-treatment process of beverage production. Background technique [0002] Beverage stability is an important indicator of beverage quality. Along with the raising of people's living standard, the stability of beverage is paid more and more attention by people. Beverage is a colloidal solution with complex and unstable components, which is often turbid due to microbial action and physical and chemical factors. [0003] The main factors of beer turbidity are some alcohol-soluble sensitive proteins and metal ions such as tannins and iron ions. The protein and tannin monomers in the finished beer can be polymerized to form turbidity under the catalysis of iron, copper and other metal ions and oxygen. Generally, the protein or tannin monomer substances in the wine to be filt...

Claims

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Application Information

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IPC IPC(8): B01J20/26C12H1/04
Inventor 寇正福刘坐镇王玉恒陈玲
Owner EAST CHINA UNIV OF SCI & TECH
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