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A method for simultaneous production of l-arabinose and d-galactose

A technology of arabinose and galactose, applied in the production of L-arabinose and D-galactose, L-arabinose and D-galactose production field, can solve the problem of low galactose content, unrealizable, arabinose yield Low problems, to achieve the effect of high yield and short process

Active Publication Date: 2019-07-19
南京凯通粮食生化研究设计有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

This method has two main disadvantages: first, the yield of arabinose is low; second, the galactose content after separation is low, less than 60%, and it is impossible to obtain galactose products by direct crystallization, so it is impossible to separate arabinose. Simultaneously direct separation and purification of galactose

Method used

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  • A method for simultaneous production of l-arabinose and d-galactose
  • A method for simultaneous production of l-arabinose and d-galactose
  • A method for simultaneous production of l-arabinose and d-galactose

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Embodiment 1

[0030]Embodiment 1, a kind of method of producing L-arabinose and D-galactose simultaneously, its technological process is as figure 2 As shown, the gum arabic was dissolved and hydrolyzed with dilute sulfuric acid to obtain a mixed sugar solution, then neutralized with alkali, filtered the mixed sugar solution, then decolorized with activated carbon, desalted with anion and cation exchange resin, concentrated to a concentration of 48.0% by mass percentage, and obtained a mixture containing L - The mixed sugar solution of arabinose, D-galactose and other miscellaneous sugars. The mixed sugar solution was detected by high-performance liquid chromatography (HPLC), and the result was that the content of L-arabinose was 43.05%, and the content of D-galactose was 12.61%, HPLC analysis results such as image 3 shown.

[0031] The mixed sugar solution was separated by a simulated moving bed chromatographic separation device. The chromatographic column is filled with calcium-type c...

Embodiment 2

[0039] Example 2, dissolving gum arabic and hydrolyzing it with dilute sulfuric acid to obtain a mixed sugar solution, then neutralizing with alkali, filtering the mixed sugar solution, decolorizing with activated carbon, desalting with anion and cation exchange resins, and concentrating to a concentration of 52.0% by mass percentage to obtain a solution containing Mixed sugar solution of L-arabinose, D-galactose and other miscellaneous sugars.

[0040] The mixed sugar solution was separated by a simulated moving bed chromatographic separation device. The chromatographic column is filled with calcium molecular sieve, and purified water is used as eluent. Purified water is deionized pure water or reverse osmosis pure water. The mixed sugar solution and purified water are heated to 58°C and enter the chromatographic separation device. The mass percentage concentration of the mixed sugar solution feed is 52.0%.

[0041] After separation, the following three components are obta...

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Abstract

The invention discloses a method for simultaneously producing L-arabinose and D-galactose. The mixed sugar solution obtained by hydrolyzing of arabic gum is separated into three components by utilizing a simulated moving bed chromatographic separation device, wherein the content of L-arabinose in the first component and the content of D-galactose in the second component all reach the content requirement of crystallization, and the crystallized L-arabinose and the crystallized D-galactose are obtained respectively through refining, concentrating and crystallizing; the third component is low-concentration impurity component, the impurities in the system can be continuously discharged out of the system; the crystallization mother liquor of L-arabinose and the crystallization mother liquor of D-galactose are mixed and returned to the simulated moving bed chromatographic separation system, and then subjected to separating, extracting and crystallizing, so as to increase the yields of L-arabinose and D-galactose.

Description

technical field [0001] The invention relates to the technical field of production of L-arabinose and D-galactose. It specifically relates to a method for simultaneously producing L-arabinose and D-galactose by using gum arabic as a raw material, and belongs to the technical field of L-arabinose and D-galactose production. Background technique [0002] L-Arabinose (L-Arabinose), also known as L-Arabinose, is a very low-calorie sweetener that can effectively inhibit and block the body's metabolic transformation of sucrose, thereby inhibiting obesity, preventing and treating obesity Hyperglycemia-related diseases; L-arabinose can also be used as a pharmaceutical intermediate, for the preparation of antiviral and anticancer drugs, and also for the preparation of bacterial culture media in the biochemical field and the synthesis of spices. L-arabinose seldom exists in nature in free form, usually combined with other monosaccharides, and exists in colloids and hemifibers in the f...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C07H3/02C07H1/06C07H1/00
CPCC07H1/00C07H1/06C07H3/02
Inventor 李瑛周日尤曹嫒吴鹏杜小霞贾红程周秀梅
Owner 南京凯通粮食生化研究设计有限公司