Method of producing xylose and xylitol and co-producing L-arabinose by bagasse

A technology for arabinose and bagasse, applied in the field of production of xylitol and L-arabinose, can solve the problems of low purity, low efficiency of continuous hydrogenation of xylose, long process flow, etc.

Inactive Publication Date: 2014-09-17
SHANDONG WANSHENG ENVIRONMENTAL TECH DEV
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0006] The purpose of the present invention is to provide a simple operation and technical The method of producing xylose and xylitol co-production L-arabinose with novelty, low cost, diversified products and high economic value is the first domestic method of co-production of functional sugar alcohol and rare sugar products with bagasse. Has extremely wide application value

Method used

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  • Method of producing xylose and xylitol and co-producing L-arabinose by bagasse

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Effect test

Embodiment 1

[0084] (1) Production of xylose:

[0085]Treat the bagasse with a pitting machine, the pitting rate is about 20%, the stacking time is more than 3 months, the sucrose in the bagasse has been fully fermented, and the bagasse with a yellowish-brown appearance and a moisture content of ≤15% is obtained. Safe stacking and storage work, strictly prevent the erosion of dust and rain. Drop into absolutely dry bagasse 24Kg in the hydrolysis equipment [record air-dried bagasse moisture and be 12.5%. Absolutely dry bagasse refers to bagasse that does not contain moisture at all, which is relative to air-dried bagasse; for example, if 20 tons of bagasse with a moisture content of 20%, the weight of absolute dry bagasse is 20× (1-20%) =16 tons], add 192Kg of dilute sulfuric acid solution with a mass concentration of 1.2% according to the absolute dry solid-liquid ratio (i.e. absolute dry bagasse to liquid mass ratio) 1:8, hydrolyze at 123°C and 0.12MPa for 2.5 hours, after the hydrolysis...

Embodiment 2

[0091] (1) Production of xylose:

[0092]Treat the bagasse with a pitting machine, the pitting rate is about 20%, the stacking time is more than 3 months, the sucrose in the bagasse has been fully fermented, and the bagasse with a yellowish-brown appearance and a moisture content of ≤15% is obtained. Safe stacking and storage work, strictly prevent the erosion of dust and rain. Put 24Kg of absolute dry bagasse into the hydrolysis equipment (measured air-dried bagasse moisture is 12.46%), add 192Kg of dilute sulfuric acid solution with a mass concentration of 1.2% according to the absolute dry solid-to-liquid ratio of 1:8, and hydrolyze at 123°C and 0.12MPa After 2.5 hours, after the hydrolysis is completed, the slag-liquid mixture is separated with a three-legged centrifuge, and the centrifugate is collected. After solid-liquid separation, add 60Kg of pure water to rinse the wet slag according to the absolute dry solid-to-liquid ratio of 1:2.5. The rinse solution is mixed wit...

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Abstract

The invention relates to a method of producing xylose and xylitol and co-producing L-arabinose by bagasse. The method comprises the following steps: first, treating the bagasse; then, producing xylose by the bagasse; and respectively producing xylitol and arabinose by the product xylose and a xylose mother liquid. By using the bagasse as a raw material, the method provided by the invention obtains crystallized xylose and further products of xylitol and L-arabinose which are high in additional value and are widely applied to the fields of foods and medicines through a whole set of process line. The method provided by the invention is simple to operate, novel in technology, low in cost, diversified in product and high in economic value, is a process method which is initiated at home for co-producing functional sugar alcohols and rare sugar products by bagasse, and has an extremely wide application value.

Description

technical field [0001] The invention belongs to the technical fields of biomedicine and light industrial food, and in particular relates to a method for producing xylose by using bagasse, the obtained xylose and xylose mother liquor, and the production of xylitol and L-arabinose by said xylose and xylose mother liquor Methods. Background technique [0002] Xylose is an intermediate product in the production process of xylitol, which belongs to five-carbon sugar and has 4 pairs of optical isomers. At present, in nature, except for bamboo shoots, xylose in a free state has not been found, but it is widely present in the hemicellulose of natural plants in a polycondensed state, that is, it is contained in plants in the form of macromolecular xylan. my country is rich in sugarcane, of which bagasse is about 21% of the sugarcane output. The bagasse produced every year is not only used for pulping and papermaking, but also used for boiler combustion to generate electricity. The ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C13K13/00C07H3/02C07H1/08C07C31/18C07C29/74C07C29/141
CPCY02P20/10
Inventor 杨念强钱朋智
Owner SHANDONG WANSHENG ENVIRONMENTAL TECH DEV
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