A kind of purification method of d-arabinose

The technology of arabinose and purification method is applied in the direction of organic chemical methods, chemical instruments and methods, monosaccharides, etc. It can solve the problems of high production cost, low product purity, cumbersome process, etc., and achieve fast sedimentation speed, large exchange capacity, Effect of improving purification efficiency

Active Publication Date: 2019-04-16
广西轻工业科学技术研究院有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The purpose of the present invention is to provide a method for purifying D-arabinose, so as to solve the problems of complicated process, low efficiency, low product purity and high production cost in the prior art.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0031] A method for purifying D-arabinose, comprising clarification, decolorization, concentration and desalination, the operation steps are as follows:

[0032] (1) Crude liquid treatment: take 100L D-arabinose crude liquid, which is obtained by chemical reaction of calcium gluconate with hydrogen peroxide under the catalysis of iron sulfate, and its solid content is 17.2%. The purity of D-arabinose is 50.0%, and the light transmittance is 7%;

[0033] (2) Clarification: add lime to D-arabinose crude liquid, adjust the pH value to 7.0, then add phosphoric acid, adjust the pH value to 5.0, then heat to 100°C, add molecular weight of 15 million Daltons, and hydrolysis degree of 20% anionic polyacrylamide flocculant, the dosage is 3mg / L, stir quickly to make it produce flocculation phenomenon, cool and let it settle, filter to remove the precipitate, and obtain 98L clear sugar liquid; its solid content is 14.8%, D-arabinose Purity 60.4%, light transmittance 50%;

[0034] (3) D...

Embodiment 2

[0039] A method for purifying D-arabinose, comprising clarification, decolorization, concentration and desalination, the operation steps are as follows:

[0040] (1) Crude liquid treatment: take 150L D-arabinose crude liquid, which is obtained by chemical reaction of calcium gluconate with hydrogen peroxide under the catalysis of ferrous sulfate, and its solid content is 20.0% , the purity of D-arabinose is 56.5%, and the light transmittance is 3%;

[0041] (2) Clarification: add lime to D-arabinose crude liquid, adjust the pH value to 8.0, then add phosphoric acid, adjust the pH value to 4.5, then heat to 70°C, add molecular weight of 18 million Daltons, and hydrolysis degree of 25% anionic polyacrylamide flocculant, the amount of flocculant is 4mg / L, stir quickly to make it produce flocculation phenomenon, cool and let it settle, filter to remove the precipitate, and obtain 147L clarified sugar liquid; its solid content is 17.0%, D- The purity of arabinose is 66.0%, and the...

Embodiment 3

[0047] A method for purifying D-arabinose, comprising clarification, decolorization, concentration and desalination, the operation steps are as follows:

[0048] (1) Crude liquid treatment: take 150L D-arabinose crude liquid, which is obtained by chemical reaction of sodium gluconate with hydrogen peroxide under the catalysis of ferrous sulfate, and its solid content is 5.0% , the purity of D-arabinose is 51.6%, and the light transmittance is 12%;

[0049] (2) Clarification: add lime to D-arabinose crude liquid, adjust the pH value to 9.0, then add phosphoric acid, adjust the pH value to 5.5, then heat to 90°C, add molecular weight of 20 million Daltons, and hydrolysis degree of 35% anionic polyacrylamide flocculant, the amount of flocculant is 2mg / L, stir quickly to make it produce flocculation phenomenon, cool and let it settle, filter to remove the precipitate, and obtain 147L clear sugar liquid; its solid content is 3.8%, D- The purity of arabinose is 69.7%, and the light...

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Abstract

The invention discloses a purification method of D-arabinose. The method comprises the steps of clarification, decoloring, concentration and desalting, and has the following operation steps that D-arabinose coarse liquid is prepared from gluconic acid or gluconate through taking a chemical reaction with hydrogen peroxide under the catalysis effect of bivalent or trivalent ferric salt; lime is added into D-arabinose coarse liquid; the pH is regulated to 7.0 to 9.0; then, phosphoric acid is added; the pH is regulated to 4.5 to 5.5; then, the materials are heated to 70 to 100 DEG C; a flocculating agent is added; stirring, still standing, filtering and precipitate removal are performed; clear sugar liquid is obtained; active carbon is added into the clear sugar liquid; stirring and decoloring are performed; the decolored sugar liquid is obtained; the decolored sugar liquid is concentrated to obtain concentrated sugar liquid; the concentrated sugar liquid is subjected to desalting through iron exchange resin; the refined D-arabinose liquid is obtained. The purification method provided by the invention has the advantages that the process is simple; the efficiency is high; the cost is low; the light transmission rate of the obtained D-arabinose is 99 to 100 percent; the purity reaches 96 percent or higher; the quality is good; good economic benefits and social benefits are realized.

Description

technical field [0001] The invention belongs to the technical field of functional sugar production and relates to a method for purifying D-arabinose. Background technique [0002] D-arabinose is a pentose analogue of D-ribose and is an important reducing sugar. In the field of medicine, it is often used as an intermediate or raw material for the synthesis of D-ribose, deoxyribose, riboflavin (vitamin B2), cytarabine, and vidarabine. In the field of food, it can not only be used as a new type of sweetener, but also be used to prepare the base of syrup, improve the quality of alcoholic beverages and synthesize flavors, etc. In addition, in the field of biochemistry, it can be used as a bacterial culture medium and substrate, such as using D-arabinose as a substrate to synthesize D-ascorbic acid in yeast, and to synthesize mycobacterial cell wall arabinogalactose. Therefore, in recent years, the application of D-arabinose in the fields of medicine, food, and biochemistry has ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C07H3/02C07H1/06
CPCC07B2200/07C07H1/06C07H3/02
Inventor 王元春雷光鸿梁智曹敏黄忠华姜毅罗左青
Owner 广西轻工业科学技术研究院有限公司
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