Method for separating and refining high-purity L-arabinose and D-xylose with simulated moving bed

A technology for simulating fluidized bed and arabinose, applied in the field of functional sugar, can solve the problems of lack of L-arabinose, difficulty in realizing industrialization, and environmental pollution, etc., so as to save acid and alkali consumption, less resin demand, and less environmental pollution Effect

Active Publication Date: 2013-05-22
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

[0006] Chinese patent 200910039185.6 discloses a method for preparing plant hemicellulose hydrolyzate and extracting xylose and arabinose. In the production process, a large amount of organic solvents are used, the production cost is high, the environment is easy to be polluted, and the operation is complicated and difficult to realize. industrialization
Chinese patent 200910255812.X discloses a method for preparing L-arabinose from corn husks. In this method, oxalic acid is used to hydrolyze corn husks, and after separation and purification, a sugar solution with an L-arabinose content of 75% is obtained. The obtained L-arabinose The purity of the product is low, and the price of corn husks is much higher than that of cane pith and sugarcane leaves, and the production cost is high
Bipolar membrane electrodialysis technology has been applied in the field of chemical desalination, acid-base and high-purity water preparation, but so far there is no technical report on the production of L-arabinose

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0037] The method for separating and refining high-purity L-arabinose and D-xylose with a simulated fluid bed uses bagasse, sugarcane pith or sugarcane leaves as raw materials, and the operation steps are as follows:

[0038] 1. Hydrolysis of raw materials:

[0039] After proper pretreatment of the cane pith, add dilute sulfuric acid with an acid mass percentage of 0.5% for hydrolysis, the solid-liquid ratio of cane pith to dilute sulfuric acid is 1:15, the hydrolysis temperature is 110°C, and the hydrolysis time is 4 hours;

[0040] 2. Purification of the extract:

[0041]Filtrate the hydrolyzate, concentrate the filtrate to a Brix of 5°Bx, inoculate the concentrated liquid with yeast for aerobic fermentation, convert the glucose in it into carbon dioxide and water, and ferment until the mass ratio of glucose is less than 0.5%; centrifuge the fermentation liquid to remove Yeast cells, the supernatant is decolorized by activated carbon, and then desalted by cation exchange re...

Embodiment 2

[0048] The method for separating and refining high-purity L-arabinose and D-xylose with a simulated fluid bed uses bagasse, sugarcane pith or sugarcane leaves as raw materials, and the operation steps are as follows:

[0049] 1. Hydrolysis of raw materials:

[0050] After sugarcane leaves are pretreated, dilute hydrochloric acid with an acid mass percentage of 2.5% is added for hydrolysis. The solid-to-liquid ratio of sugarcane leaves and dilute hydrochloric acid is 1:5, the hydrolysis temperature is 130°C, and the hydrolysis time is 1h;

[0051] 2. Purification of the extract:

[0052] Filtrate the hydrolyzate, concentrate the filtrate to a Brix of 30°Bx, inoculate the concentrated liquid with yeast for aerobic fermentation, convert the glucose in it into carbon dioxide and water, and ferment until the mass ratio of glucose is less than 0.5%; centrifuge the fermentation liquid to remove Yeast cells, after the supernatant is decolorized by activated carbon, it is sent to the ...

Embodiment 3

[0059] The method for separating and refining high-purity L-arabinose and D-xylose with a simulated fluid bed uses bagasse, sugarcane pith or sugarcane leaves as raw materials, and the operation steps are as follows:

[0060] 1. Hydrolysis of raw materials:

[0061] After the bagasse is pretreated, it is hydrolyzed by adding dilute hydrochloric acid with an acid mass percentage concentration of 1.2%. The solid-liquid ratio of sugarcane pith and dilute hydrochloric acid is 1:8, the hydrolysis temperature is 120°C, and the hydrolysis time is 3 hours;

[0062] 2. Purification of the extract:

[0063] Filtrate the hydrolyzate, concentrate the filtrate to a Brix of 25°Bx, inoculate the concentrated liquid with yeast for aerobic fermentation, convert the glucose in it into carbon dioxide and water, and ferment until the mass ratio of glucose is less than 0.5%; centrifuge the fermentation liquid to remove Yeast cells, after the supernatant is decolorized by activated carbon, it is s...

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Abstract

The invention discloses a method for separating and refining high-purity L-arabinose and D-xylose with a simulated moving bed, which comprises the following steps: by using bagasse, bagasse pith or sugarcane leaf as a raw material, hydrolyzing, purifying, separating with a simulated moving bed chromatographic separator to obtain an L-arabinose solution with the purity of higher than 90% and a D-xylose solution with the purity of higher than 85%, and crystallizing to obtain the L-arabinose and D-xylose with the purity of up to 99%. The method has the advantages of simple technological operation, high sugar purity, high yield, low cost and high equipment stability, and is suitable for industrial production.

Description

technical field [0001] The invention belongs to the technical field of functional sugars, in particular to a simulated moving bed chromatographic separation technology, in particular to a method for producing high-purity L-arabinose and D-xylose by using bagasse, sugarcane pith or sugarcane leaves. Background technique [0002] L-arabinose is a rare functional sugar, which belongs to five-carbon aldose, mainly exists in plant hemicellulose and gum arabic, and is a non-caloric sugar substitute sweetener. L-arabinose can selectively inhibit the activity of sucrase in the intestinal tract non-competitively, can block the metabolism of sucrose in the body, and has the functions of inhibiting obesity, assisting in lowering blood sugar and blood fat. L-arabinose is also an important pharmaceutical intermediate, which can be used to synthesize anticancer, antiviral and cardiovascular disease drugs. In addition, L-arabinose also has the effects of treating constipation, protecting ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C07H3/02C07H1/06C13K13/00
Inventor 姜毅雷光鸿魏承厚罗左青曹敏黄忠华姚晓麦韦艳君梁智滕碧蔚
Owner 广西轻工业科学技术研究院有限公司
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