Method for simultaneously preparing xylose, arabinose and galactose by utilizing intermittent simulated moving bed chromatography

A technology for simulating moving bed and arabinose, applied in chemical instruments and methods, monosaccharides, sugar derivatives, etc., can solve the problem of reducing the yield of xylose and arabinose crystallization products, ineffective recovery of galactose, and reducing resource utilization efficiency and other issues, to achieve the effect of improving the utilization rate of biomass resources, reducing the amount of resin and the number of chromatographic columns, and reducing investment and loss

Active Publication Date: 2020-10-09
JIANGNAN UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The existing simulated moving bed chromatography method cannot effectively recover galactose in the xylose mother liquor, and the fermentation method requires specific strains of bacteria and strict conditions to remove galactose, which leads to an increase in the operating cost of the subsequent treatment process, and at the same time reduces the subsequent xylose and arabinose Product yield during crystallization, reducing resource utilization

Method used

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  • Method for simultaneously preparing xylose, arabinose and galactose by utilizing intermittent simulated moving bed chromatography
  • Method for simultaneously preparing xylose, arabinose and galactose by utilizing intermittent simulated moving bed chromatography
  • Method for simultaneously preparing xylose, arabinose and galactose by utilizing intermittent simulated moving bed chromatography

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Embodiment 1

[0054] A method for simultaneously producing xylose, arabinose and galactose by using batch simulated moving bed chromatography is as follows.

[0055](1) Pretreatment of xylose mother liquor: the total sugar refraction of xylose mother liquor is about 60%, of which, by mass fraction, xylose content is 45% to 52%, arabinose content is 20% to 23%, and glucose content is 12% to 13.5% %, the content of galactose is 7% to 10%, and the content of cellobiose and mannose is 2% to 5%. Dilute the xylose mother liquor with deionized water. After dilution, the refractive concentration is about 25%. Inoculate the active dry yeast powder into the xylose mother liquor at a ratio of 0.3% (m / V), blow air to oxygenate and control the temperature at 25-35°C, and ferment After 24 hours, the glucose content in the liquid after fermentation is lower than 1%, and the miscellaneous sugar content is lower than 0.5%.

[0056] After fermentation, the liquid is finely filtered to remove colloid, protei...

Embodiment 2

[0062] A method for simultaneously producing xylose, arabinose and galactose by using batch simulated moving bed chromatography is as follows.

[0063] (1) Pretreatment of xylose mother liquor: the total sugar refraction of xylose mother liquor is about 60%, of which, by mass fraction, xylose content is 45% to 52%, arabinose content is 20% to 23%, and glucose content is 12% to 13.5% %, the content of galactose is 7% to 10%, and the content of cellobiose and mannose is 2% to 5%. Dilute the xylose mother liquor with deionized water. After dilution, the refractive concentration is about 22%. Inoculate the active dry yeast powder into the xylose mother liquor at a ratio of 0.5% (m / V), blow air to oxygenate and control the temperature at 30-35°C, and ferment After 15 hours, the glucose content in the fermented liquid is lower than 2%, and the cellobiose and mannose contents are lower than 0.5%.

[0064] After fermentation, the liquid is finely filtered to remove colloid, protein, ...

Embodiment 3

[0070] A method for simultaneously producing xylose, arabinose and galactose by using batch simulated moving bed chromatography is as follows.

[0071] (1) Pretreatment of xylose mother liquor: the total sugar refraction of xylose mother liquor is about 60%, of which, by mass fraction, xylose content is 45% to 52%, arabinose content is 20% to 23%, and glucose content is 12% to 13.5% %, the content of galactose is 7% to 10%, and the content of cellobiose and mannose is 2% to 5%. Dilute the xylose mother liquor with deionized water. After dilution, the refractive concentration is about 25%. Inoculate the active dry yeast powder into the xylose mother liquor at a ratio of 1% (m / V), blow air to oxygenate and control the temperature at 30-35°C, and ferment After 12 hours, the glucose content in the fermented liquid is lower than 1.5%, and the cellobiose and mannose contents are lower than 0.5%.

[0072] After fermentation, the liquid is finely filtered to remove colloid, protein, ...

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Abstract

The invention discloses a method for simultaneously preparing xylose, arabinose and galactose by utilizing intermittent simulated moving bed chromatography, and belongs to the technical field of foodindustry separation. The method comprises the following steps: (1) pretreating xylose mother liquor; and (2) separating xylose, arabinose and galactose by intermittent simulated moving bed chromatography. According to the invention, xylose, arabinose and galactose can be simultaneously prepared from xylose mother liquor or xylose fermentation liquor with high purity and high yield; the problems that the sugar component recovery rate is not high, the conventional chromatography does not meet the separation requirement, the existing chromatography multi-component separation system is complex, the fixed phase demand is large, the separation function area is subjected to cross contamination and the like are solved; the problems that the crystallization yield of xylose and arabinose is relatively low due to galactose, galactose is difficult to consume by a fermentation method and the like are also solved, full recovery of high-value saccharides is realized, and the resource utilization rateis increased.

Description

technical field [0001] The invention belongs to the technical field of food industry separation, and relates to a method for simultaneously preparing xylose, arabinose and galactose by using intermittent simulated moving bed chromatography. Background technique [0002] Xylose is a pentose sugar, also known as five-carbon aldose, which mainly exists in plants in the form of heteropolysaccharides. Xylose is a low-calorie sugar sweetener (sweetness is 72% of sucrose, close to glucose), which has the effects of promoting the production of bifidobacteria, intestinal peristalsis, and anti-caries. The product of catalytic hydrogenation of xylose (i.e. xylitol) is a healthy sweetener with a sweetness comparable to that of sucrose. Xylitol has similar physiological effects to xylose. [0003] Arabinose is a five-carbon sugar, also known as gum aldose, which mainly exists in plant pulp, hemicellulose, etc. in the form of heteropolysaccharides. Arabinose is a new type of low-calorie...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C07H1/06C07H3/02C07H3/08
CPCC07H1/06C07H3/02C07H3/08
Inventor 张军伟贾彩敬袁苗新
Owner JIANGNAN UNIV
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