Method for separating and extracting L-arabinose from waste wood sugar mother liquid from wood sugar production

A technology of xylose mother liquor and arabinose, applied in the field of separation and extraction of L-arabinose, which can solve the problems of unfriendly environment and high production cost, and achieve the effects of no environmental pollution, less energy consumption and lower production cost

Inactive Publication Date: 2009-10-14
上海金杉生物科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

There are also disadvantages such as high production cost and unfriendly environment
[0009] In short, relying on the existing technology to produce L-arabinose has the disadvantages of high production cost and unfriendly to the environment. It is very important to develop an economical and environmentally friendly method to reduce production costs

Method used

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  • Method for separating and extracting L-arabinose from waste wood sugar mother liquid from wood sugar production
  • Method for separating and extracting L-arabinose from waste wood sugar mother liquid from wood sugar production
  • Method for separating and extracting L-arabinose from waste wood sugar mother liquid from wood sugar production

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0051] Take by weighing 1000 grams of xylose mother liquor, this mother liquor comes from the mother liquor that stays after preparing xylose with corncob hydrolyzate crystallization, the selected xylose mother liquor contains 55% D-xylose, 20% L-arabinose, 15 % glucose, 3% galactose and the remaining other miscellaneous sugars, add 10 grams of activated carbon powder, decolorize at 80 ° C for 60 minutes, and stir from time to time, the stirring speed is 100 revolutions per minute, and filter with filter cloth. The filtrate enters the macroporous resin for decolorization, and the decolorized solution enters the 001*7 type cation exchange column-201*7 type anion exchange column-001*7 type cation exchange column to exchange and remove the ions in the mother liquor. Dilute the decolorized and desalted mother liquor five times with tap water, add 1% yeast powder, 0.01% anhydrous magnesium sulfate and 0.1% dipotassium hydrogen phosphate, fully dissolve, and put it into a 10-liter fe...

Embodiment 2

[0053] Take by weighing 1500 grams of xylose mother liquor, this mother liquor comes from the mother liquor that stays after preparing xylose with corncob hydrolyzate crystallization, the selected xylose mother liquor contains 40% D-xylose, 15% L-arabinose, 15% % glucose, 3% galactose and other miscellaneous sugars, add 20 grams of activated carbon powder, decolorize at 80°C for 60 minutes, and stir from time to time, the stirring speed is 100 revolutions per minute, and filter with filter cloth. The decolorizing solution enters the macroporous strongly acidic styrene cation exchange resin D001 exchange column - the macroporous strong basic styrene anion exchange resin D201 column - the macroporous strong acidic styrene cation exchange resin D001 column for exchange to remove ions in the mother liquor. Dilute the decolorized and desalted mother liquor four times with purified water, add 1.5% yeast powder by mass percentage, 0.01% anhydrous magnesium sulfate and 0.1% dipotassium...

Embodiment 3

[0055]Take by weighing 1000 grams of xylose mother liquor, this mother liquor comes from the mother liquor that stays after preparing xylose with corncob hydrolyzate crystallization, the selected xylose mother liquor contains 50% D-xylose, 20% L-arabinose, 15 % glucose, 3% galactose and the rest of other miscellaneous sugars, first add 10 grams of activated carbon powder, decolorize at 60 ° C for 30 minutes, and stir from time to time, the stirring speed is 100 rpm, filter with filter cloth, decolorize The liquid goes through D900 decolorization and adsorption macroporous resin for two-step decolorization, and the decolorization liquid enters the macroporous weakly acidic acrylic cation exchange resin D113 exchange column-macroporous weak base styrene anion exchange resin D301 exchange column to exchange and remove ions in the mother liquor. Dilute the decolorized and desalted mother liquor three times with purified water, add 1% cottonseed powder by mass percentage, 0.2% yeast...

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Abstract

The invention provides a method for separating and extracting L-arabinose from wasted wood sugar mother liquid from wood sugar production. The method comprises the following steps: the wood sugar mother liquid is decolorized; the decolorized wood sugar mother liquid is desalted by using ion exchange resin; the desalted defecated wood sugar mother liquid is diluted and added by required nitrogen source and inorganic salt for germicidal treatment; microzyme is inoculated into the sterilized wood sugar mother liquid for fermenting cultivation; the microzyme is removed after the ferment is finished, supernatant is processed with the methods of discolorationt, desaltification, concentration, and the like, to get colorless defecated fermenting liquid; the fermenting liquid is further concentrated, crystallized and dried to get the L-arabinose of high purity. The method has the advantages of no pollution, low energy consumption and low cost, and is suitable for industrial large-scale production.

Description

technical field [0001] The invention relates to a method for producing L-arabinose, in particular to a method for separating and extracting L-arabinose from waste xylose mother liquor for xylose production. Background technique [0002] my country is a big producer of xylose and xylitol, xylitol needs to be used as a raw material for the production of xylitol, and the current production capacity of xylitol in my country is about 60,000 tons. About one ton of xylose is needed to produce one ton of xylitol, and about one ton of xylose mother liquor is left for every ton of xylose produced, and about 60,000 tons of xylose mother liquor are produced every year. Some of these xylose mother liquors are used as pigment raw materials for the production of soy sauce in the sauce factory, and some are used for hydrogenation to make liquid xylitol, but many parts become industrial wastes that are difficult to handle. The content of L-arabinose in this xylose mother liquor is even as h...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C12P19/02C12R1/84
Inventor 程海荣陈小芳莫绯
Owner 上海金杉生物科技有限公司
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