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Method for producing mannitol and sorbitol through waste fructooligosaccharide liquid

A technology of fructooligosaccharides and mannitol, which is applied in the field of sugar refining industry, can solve problems such as resource waste and environmental damage, and achieve the effects of protecting the environment, increasing added value and improving production yield.

Active Publication Date: 2014-01-15
SHANDONG BAILONG CHUANGYUAN BIO TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] Ordinary grade fructooligosaccharide is usually made of sucrose, which is converted into kestose, kestose and kestose pentaose through fructotransferase reaction. This mixture is called fructooligosaccharide, which is obtained after refining High-purity fructo-oligosaccharides will produce a large amount of waste liquid during its production and refining process, which contains reaction by-products glucose, fructose and the remaining reaction substrate sucrose. If these waste water are not recycled, they will cause environmental pollution. destruction and waste of resources

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0018] The production waste liquid of fructooligosaccharide is used as raw material, comprising the steps of:

[0019] (1) Filter 1 ton of production waste liquid, decolorize it, remove impurities with ion exchange resin, and then evaporate and concentrate to obtain 100 kg of concentrated sugar liquid;

[0020] (2) Hydrolyze the concentrated sugar solution, adjust the pH of the hydrolyzed solution to 3.6, add molybdate with a mass of 0.02% of the hydrolyzed solution as a catalyst, stir at 96°C for epimerization reaction, and the reaction time is 3 hours. Then go through the ion exchange resin to remove impurities to obtain a mixed solution of mannose and glucose;

[0021] (3) Add catalyst nickel or ruthenium of 7-9% by weight to the mixed solution, and carry out hydrogenation reaction at 150°C and 8.2MPa hydrogen pressure. The reaction time is 1.5 hours, and the mixture of sorbitol and mannitol is obtained. Mixed alcohol;

[0022] (4) Filter the mixed alcohol to remove the c...

Embodiment 2

[0024] The production waste liquid of fructooligosaccharide is used as raw material, comprising the steps of:

[0025] (1) Filter 1 ton of production waste liquid, decolorize it, remove impurities with ion exchange resin, and then evaporate and concentrate to obtain 100 kg of concentrated sugar liquid;

[0026] (2) Hydrolyze the concentrated sugar solution, adjust the pH of the hydrolyzate to 3.7, add molybdate with 0.5% of the mass of the hydrolyzate as a catalyst, and stir at 97°C for epimerization reaction. The reaction time is 3.5 hours. Then go through the ion exchange resin to remove impurities to obtain a mixed solution of mannose and glucose;

[0027] (3) Add catalyst nickel or ruthenium accounting for 8% by weight to the mixture, and carry out hydrogenation reaction at 155°C and 8.6MPa hydrogen pressure. The reaction time is 2 hours to obtain a mixed alcohol of sorbitol and mannitol ;

[0028] (4) Filter the mixed alcohol to remove the catalyst, pass through the ion...

Embodiment 3

[0030] The production waste liquid of fructooligosaccharide is used as raw material, comprising the steps of:

[0031] (1) Filter 1 ton of production waste liquid, decolorize it, remove impurities with ion exchange resin, and then evaporate and concentrate to obtain 100 kg of concentrated sugar liquid;

[0032] (2) Hydrolyze the concentrated sugar solution, adjust the pH of the hydrolyzed solution to 3.8, add molybdate with 1% of the mass of the hydrolyzed solution as a catalyst, stir at 98°C for epimerization reaction, and the reaction time is 4 hours. Then go through the ion exchange resin to remove impurities to obtain a mixed solution of mannose and glucose;

[0033] (3) Add catalyst nickel or ruthenium accounting for 9% by weight to the mixed solution, and carry out hydrogenation reaction at 160°C and 9MPa hydrogen pressure for a reaction time of 2.5 hours to obtain a mixed alcohol of sorbitol and mannitol;

[0034] (4) Filter the mixed alcohol to remove the catalyst, pa...

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Abstract

The invention relates to the technical field of the sugar industry, in particular to a method for producing mannitol and sorbitol through waste fructooligosaccharide liquid. The method comprises the following steps: after pretreating the waste production liquid, firstly, hydrolyzing the waste production liquid to hydrolyze sucrose in the waste production liquid into the invert sugar of 1 / 2 fructose and glucose; secondly, epimerizing glucose as a raw material so as to convert the glucose into mannose; finally, performing hydroconversion to obtain the mannitol, and converting the fructose and the glucose in the mixed liquid into the sorbitol and the mannitol under the action of hydrogenation, thus realizing the maximum recovery of the product. The method is simple in process steps, and adopts the waste production liquid as a raw material, so that the production cost is greatly reduced, the added value of a byproduct is improved, the environment is protected, and the production yield is improved. Therefore, the method is suitable for wide popularization and application.

Description

(1) Technical field [0001] The invention relates to the technical field of sugar industry, in particular to a method for producing mannitol and sorbitol by utilizing fructooligosaccharide waste liquid. (2) Background technology [0002] Among food additives and sweeteners, fructo-oligosaccharides are the first functional oligosaccharides approved by the FDA as generally recognized as safe (GRAS), and their low caries, indigestibility and bifidobacteria proliferation have been confirmed . As a non-digestive functional food, fructooligosaccharide is a typical bifidus factor that meets the standard of prebiotics (i.e. Bifidobacterium probiotics), which can regulate the flora in the body in two directions, reduce blood lipids, promote vitamin synthesis, protect the liver, and promote Ca , Mg, Fe and other mineral absorption, prevent obesity, prevent dental caries and beautify the role. [0003] Due to its excellent health care function and special physiological activity, f...

Claims

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Application Information

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IPC IPC(8): C07C31/26C07C29/141
CPCC07C29/141C07C29/145C07H1/00C07H3/02C13K3/00C07C31/26
Inventor 窦光朋窦宝德张继红
Owner SHANDONG BAILONG CHUANGYUAN BIO TECH
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