A method for producing l-arabinose from xylose mother liquor

A technology for mother liquor of arabinose and xylose, which is applied in the direction of preparation of sugar derivatives, sugar derivatives, sugar derivatives, etc., can solve the problem of complex L-arabinose process, poor continuous and stable production performance, and low yield of L-arabinose Poor and other problems, to achieve the effect of less production flow capital, easy waste carbon treatment, and low equipment investment cost

Inactive Publication Date: 2016-08-24
SHANDONG WANSHENG ENVIRONMENTAL TECH DEV
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0003] The purpose of the present invention is to provide a kind of wood for the technical defects of the current production of L-arabinose by using xylose mother liquor, such as complex technological process, poor continuous and stable production performance, high cost, poor yield of L-arabinose, and low purity. The method for producing L-arabinose from sugar mother liquor has simple operation process, low cost, high yield and high purity of L-arabinose, and has extremely wide application value

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  • A method for producing l-arabinose from xylose mother liquor
  • A method for producing l-arabinose from xylose mother liquor

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Embodiment 1

[0028] The indicators of xylose mother liquor, a by-product of crystallized xylose produced by bagasse: weight 8.8Kg, refraction 60.15%, light transmission 5.6%, conductivity 503us / cm, high performance liquid chromatography analysis of glucose content in xylose mother liquor 10.47%, xylose Content 60.71%, L-arabinose content 13.68%. Add pure water to dilute it at 45°C and stir at 120 rpm. After dilution, the indicators of the material liquid are measured: light transmission 13%, pH 4.67, conductivity 1692us / cm, refractive index 20%. Add active dry yeast powder according to 0.2% of the weight of the diluted feed liquid. The pH of the feed liquid is natural. Instrument or high-performance liquid chromatography to detect the glucose content, when the grape content is less than 1%, the fermentation is terminated, the fermentation liquid is vacuum filtered with a Buchner funnel to recover the yeast, and the filtrate is collected for later use. The measured refraction of the filtra...

Embodiment 2

[0030] The by-product xylose mother liquor 9.5Kg when sugarcane bagasse produces xylose, refraction 60%, transmittance 4.88%, conductance 500us / cm, high performance liquid chromatography analyzes the glucose content in the xylose mother liquor 10.5%, xylose content 60.53%, The content of L-arabinose is 13.72%. Add pure water to dilute it at 45°C and stir at 120 rpm. After dilution, the indicators of the material liquid are measured: light transmission 12.7%, pH 4.50, conductivity 1806us / cm, refractive index 20.52%. Add active dry yeast powder according to 0.2% of the weight of the diluted feed liquid. The pH of the feed liquid is natural. Instrument or high-performance liquid chromatography to detect the glucose content, when the grape content is less than 1%, the fermentation is terminated, the fermentation liquid is vacuum filtered with a Buchner funnel to recover the yeast, and the filtrate is collected for later use. The measured refraction of the filtrate was 20.13%, pH ...

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Abstract

The invention provides a method of producing L-arabinose by a xylose mother liquid. The method comprises the following steps: first, diluting the xylose mother liquid; then, removing glucose by active dry yeast powder; further refining the xylose mother liquid through decoloration, ion exchange and evaporation concentration; then obtaining an L-arabinose component solution and a xylose component solution through a continuous chromatographic mobile bed and respectively crystallizing to obtain an L-arabinose product and a xylose product. The method provided by the invention extracts L-arabinose through the continuous chromatographic mobile bed by using a byproduct xylose mother liquid in production of crystallized xylose by bagasse, is simple in operation, low in technical cost and good in separating effect, and has an extremely wide application valve. The obtained L-arabinose is high in purity and yield.

Description

technical field [0001] The invention belongs to the technical field of rare sugar production, in particular to a method for producing L-arabinose from xylose mother liquor. Background technique [0002] L-arabinose, molecular formula CH 2 OH(CHOH) 3 CHO, melting point 154-158°C, white crystal or crystalline powder in appearance, easily soluble in water, slightly soluble in alcohol, insoluble in ether, methanol and acetone, often combined with other monosaccharides in nature, existing in the form of heteropolysaccharides In plant pulp, hemicellulose, coniferous tree heartwood and bacterial polysaccharides. The American Medical Association lists L-arabinose as a nutritional supplement or over-the-counter drug used as an anti-obesity agent. In the list of specific health foods of the Japanese Ministry of Health and Welfare, L-arabinose is listed as a special health food additive for regulating blood sugar. . According to the 2008 No. 12 document announcement of the Ministry...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C07H3/02C07H1/06
Inventor 钱朋智杨念强
Owner SHANDONG WANSHENG ENVIRONMENTAL TECH DEV
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