Method for removing residual acids in biosaccharide preparation technique by electrodialysis

A preparation process, electrodialysis technology, applied in the preparation of sugar derivatives, sugar derivatives, sugar derivatives, etc., can solve the problems of high energy consumption, cumbersome process, secondary pollution, etc., achieve low energy consumption, simple process, The effect of easy operation and control

Inactive Publication Date: 2016-06-08
HEFEI CHEMJOY POLYMER MATERIALS CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0008] In order to overcome the disadvantages of cumbersome process, secondary pollution, and high energy consumption in the existing bio-sugar preparation process, the present invention aims to provide an environmentally friendly and easy-to-operate method to remove bio-sugar. Residual acid in sugar production process

Method used

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  • Method for removing residual acids in biosaccharide preparation technique by electrodialysis

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Experimental program
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Effect test

Embodiment 1

[0026] like figure 1 As shown, the present embodiment removes the residual acid in the biological sugar hydrolyzate according to the following steps:

[0027] Agricultural plant short fiber waste (corn cob) is hydrolyzed with the pentosan in the plant fiber under the action of 8% sulfuric acid, obtains 500ml of biological sugar hydrolyzate (mainly containing xylose and a small amount of sulfuric acid and colloid, albumen, pigment, its pH The value is about 1.0, the conductivity is about 13.5mS / cm, the sugar content is 6.5%, and the sulfuric acid content is 0.76%);

[0028] Set up the electrodialysis unit, such as figure 1 As shown, the electrodialysis device is composed of desalination chamber material tank 2, concentration chamber material tank 1, electrode chamber material tank 3, membrane module 4, three circulating pumps 6, DC power supply 5 and pipelines; the membrane module is composed of anode, cathode and It consists of cation exchange membranes, separators and anion...

Embodiment 2

[0034] This embodiment is the same as Embodiment 1, the only difference is that when electrodialysis is carried out, the operating current density is controlled at 20mA / cm 2 .

[0035] The operation time of the whole process of this embodiment is 75 minutes, the removal rate of residual acid is 99.2%, and the recovery rate of biological sugar is 83.2%.

Embodiment 3

[0037] This embodiment is the same as Embodiment 1, the only difference is that when electrodialysis is carried out, the operating current density is controlled at 30mA / cm 2 .

[0038] The operating time of the whole process of this embodiment is 73 minutes, the removal rate of residual acid is 99.3%, and the recovery rate of biological sugar is 81.6%.

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Abstract

The invention discloses a method for removing residual acids in a biosaccharide preparation technique by electrodialysis. The method is characterized in that residual inorganic acids in the biosaccharide hydrolysate are removed by an electrodialysis process. The method comprises the following steps: hydrolyzing agricultural plant chopped fiber waste under the action of dilute acids to obtain the biosaccharide hydrolysate, and adding the hydrolysate into a desalination chamber internal circulation of an electrodialysis plant to carry out electrodialysis, thereby removing the residual acids, wherein the operation temperature is controlled at 35 DEG C or below, and the operating current density is 10-40mA / cm<2>. The method ensures the high yield of the product on the premise of effectively removing residual acids in the biosaccharide hydrolysate, and is a clean, efficient, green and environment-friendly technique.

Description

technical field [0001] The invention relates to a method for removing residual acid in a biological sugar preparation process by using electrodialysis technology. Background technique [0002] In nature, biological sugars (such as xylose, galactose, mannose, and arabinose, etc.) are widely distributed in organisms and are primary products of plant photosynthesis. Sugars are not only storage nutrients in plants, but also precursors for the biosynthesis of other organic compounds. These biological sugars in plants have various biological activities and have little toxic side effects. For example, xylose is the most stable in the digestive system, it is not hydrolyzed by digestive enzymes, its metabolism does not depend on insulin, and it has the effect of preventing dental caries. It is an ideal sweetener for preparing chewing gum, chocolate, hard candy and other foods for patients with diabetes and hepatitis. Arabinose can inhibit the enzyme that hydrolyzes disaccharides, s...

Claims

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Application Information

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IPC IPC(8): C07H1/08
CPCC07H1/08
Inventor 汪耀明李为吴亮李传润颜海洋张勤徐铜文
Owner HEFEI CHEMJOY POLYMER MATERIALS CO LTD
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