Method for preparing arabinose, galactose, rhamnose and glucuronic acid

A technology of glucuronic acid and arabinose, which is applied in the production field of galactose, arabinose, rhamnose and glucuronic acid to achieve high efficiency, high raw material utilization rate and short production process

Active Publication Date: 2019-02-26
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

In this invention, the rhamnose and glucuronic acid in the hydrolyzate are not extracted, but are discharged as impurities

Method used

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  • Method for preparing arabinose, galactose, rhamnose and glucuronic acid
  • Method for preparing arabinose, galactose, rhamnose and glucuronic acid
  • Method for preparing arabinose, galactose, rhamnose and glucuronic acid

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0054] Example 1, crush the gum arabic, dissolve it at 30-40°C, adjust it to a mass percentage concentration of 25%, add dilute sulfuric acid to adjust the pH value of the solution to 0.3, and hydrolyze it at a temperature of 105°C for 12 hours to obtain a hydrolyzed solution; The solution was left to stand for 1-2 hours, and the supernatant was filtered and neutralized with alkali to a pH value of 4.0-5.0, then filtered and concentrated to obtain a concentrated solution.

Embodiment 2

[0055] Embodiment 2, the device for decolorization and deionization used in the present invention to separate the mixture simultaneously, as attached image 3 As shown, it consists of chromatographic column 1, booster pump 2, conductivity meter 3, connecting pipe 4, isolation valve 5, eluent pipe 6, material pipe 7, circulation flow meter 10; raffinate pipe 8, raffinate flow rate Meter 81, raffinate flow regulating valve 82, pigment and ionic liquid branch 83, glucuronic acid liquid branch 84; extracting liquid pipe 9, extracting liquid flow meter 91, extracting liquid flow regulating valve 92, arabinose liquid branch 93, galactose solution branch 94, mixed sugar solution branch 95; there are also arabinose solution tank, galactose solution tank, mixed sugar solution tank, glucuronic acid solution tank and pigment and ionic liquid tank; each chromatographic column The inlet is connected with eluent valves VW1~VW4; the inlet of the first chromatographic column is connected with...

Embodiment 3

[0058] Example 3, the operation process of the device for decolorizing and deionizing while separating the mixture described in Example 2 includes three processes: feeding, elution, and internal circulation.

[0059] The device operates periodically. For a chromatographic system composed of 4 chromatographic columns in series, the column numbers are Z1, Z2, Z3, and Z4. Each cycle is divided into 10 processes, starting from process 1, going to process 10, and then returning to process 1. Continuous cycle; 10 processes are as follows:

[0060] Process 1: Z1 feeds the material, and Z4 lowers the rich mixed sugar solution C, and enters the extraction liquid pipe 9, passes through the extraction liquid flow meter 91, the extraction liquid flow regulating valve 92, enters the mixed sugar liquid branch 95, and passes through the VC After the valve, it enters the mixed sugar solution tank.

[0061] Process 2: Z1 feeds material, Z1 discharges rich glucuronic acid liquid D, and enters ...

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Abstract

The invention relates to a method for preparing arabinose, galactose, rhamnose and glucuronic acid. According to the invention, Arabic gum is hydrolyzed under acidic conditions to obtain mixed liquorof arabinose, galactose, rhamnose and glucuronic acid, steps of neutralization, filtration, and concentration are carried out to obtain concentrated liquid, and then steps of decolorization, deionization, and separation are carried out to obtain the following products: (1) an arabinose-rich solution is concentrated and crystallized to obtain crystalline arabinose; (2) a galactose-rich solution isconcentrated and crystallized to obtain crystalline galactose; (3) a mixed sugar solution rich in galactose and rhamnose is mixed with the crystalline mother liquor of galactose, and then is subjectedto chromatographic separation to obtain a solution rich in rhamnose, then the solution is concentrated and crystallized to obtain crystalline rhamnose; and (4) a solution rich in glucuronic acid is subjected to ion removal, and then is concentrated and crystallized to obtain the crystalline glucuronic acid.

Description

technical field [0001] The invention relates to a production technology of L-arabinose, D-galactose, L-rhamnose and D-glucuronic acid. It specifically relates to the production technical field of simultaneously preparing arabinose, galactose, rhamnose and glucuronic acid by using gum arabic as a raw material. Background technique [0002] Gum Arabic is a kind of thickener with wide sources, safe and harmless, and partially degradable by human body. Gum Arabic has two components, polysaccharides and a small portion of proteins covalently bonded to the polysaccharides. The polysaccharides in gum arabic can be acid-hydrolyzed to obtain a mixture of L-arabinose, D-galactose, L-rhamnose, D-glucuronic acid, oligosaccharides and other miscellaneous sugars. [0003] 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 tr...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C07H3/02C07H7/033C07H1/06C07H1/00
CPCC07H1/00C07H1/06C07H3/02C07H7/033
Inventor 李瑛周日尤伍玉碧吴鹏贾红程杜小霞
Owner 南京凯通粮食生化研究设计有限公司
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