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Method for preparing powder xylitol with purity being 55%

A powder xylitol, purity technology, applied in the field of powder xylitol preparation, can solve the problems of low yield, low xylitol purity, easy pollution of the environment by chemical synthesis, and achieve improved yield and purity Effect

Inactive Publication Date: 2016-07-13
CHANGZHOU UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The technical problem that the present invention mainly solves is aimed at the xylitol extraction method commonly used at present, although the biotransformation method is simple to operate, but the xylitol purity obtained by extraction is relatively low, and other chemical synthesis methods are easy to pollute the environment in the production process, and The current situation with relatively low yield provides a kind of bagasse, peanut shells, and corncobs as raw materials, through water washing, vibrating screen vibration, and adding hydrochloric acid reaction, three times to remove impurities, so that various impurities in the raw materials can be removed, and then hydrolyzed , adding activated carbon for decolorization, repeated ion exchange, evaporation concentration and final drying treatment, thus obtaining the preparation method of powder xylitol with a purity of 55%

Method used

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Examples

Experimental program
Comparison scheme
Effect test

example 1

[0020] First, put 300g of bagasse, 350g of peanut shells, and 150g of corncob into clean water, rub them with your hands, and wash them repeatedly once. After removing the surface dirt, place them in the sun for 5 hours to make the surface water content of the mixture 10%. Put the sun-dried mixture into the storage hopper in front of the vibrating sieve, use the vibrating sieve in the storage hopper to initially remove impurities, and after the initial impurity removal, add peanut shell mass concentration of 25% to the mixture after the removal of impurities. hydrochloric acid solution, and heated to 80°C at a rate of 10°C / min, stirring continuously with a stirring rod during the heating process, then kept the temperature for 15 minutes, filtered, and removed the waste liquid, so that the mixture was further removed from impurities; then the above-mentioned The impurity-removed mixture is placed in a pulverizer for pulverization, pulverized for 15 minutes, and passed through a ...

example 2

[0023]First, put 400g of bagasse, 400g of peanut shells, and 200g of corn cob into clear water, rub them with your hands, and wash them twice. Put the sun-dried mixture into the storage hopper in front of the vibrating sieve, use the vibrating sieve in the storage hopper to initially remove impurities, and after the initial impurity removal, add peanut shell mass concentration of 25% to the mixture after the removal of impurities. hydrochloric acid solution, and heated to 83°C at a rate of 13°C / min, stirring continuously with a stirring bar during the heating process, then kept the temperature for 20 minutes, filtered, and removed the waste liquid, so that the mixture was further removed from impurities; then the above-mentioned The impurity-removed mixture is placed in a pulverizer for pulverization, pulverized for 18 minutes, and passed through a 110-mesh sieve to obtain mixture granules, and then the obtained mixture granules are placed in a container, and 1.5 times the mass...

example 3

[0026] First, put 500g of bagasse, 450g of peanut shells, and 250g of corn cob into clear water, rub them with your hands, and wash them repeatedly for 3 times. Put the sun-dried mixture into the storage hopper in front of the vibrating sieve, use the vibrating sieve in the storage hopper to initially remove impurities, and after the initial impurity removal, add peanut shell mass concentration of 25% to the mixture after the removal of impurities. hydrochloric acid solution, and heated to 85°C at a rate of 15°C / min, stirring continuously with a stirring bar during the heating process, then kept the temperature for 25 minutes, filtered, and removed the waste liquid, so that the mixture was further removed from impurities; then the above-mentioned The impurity-removed mixture is placed in a pulverizer for pulverization, pulverized for 20 minutes, and passed through a 120-mesh sieve to obtain mixture granules, and then the obtained mixture granules are placed in a container, and ...

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Abstract

The invention discloses a method for preparing powder xylitol with the purity being 55% and belongs to the technical field of xylose preparation.The method includes the steps that bagasse, peanut shells and corncobs serve as raw materials, washing, vibration with a vibrating screen and a reaction conducted by adding hydrochloric acid are conducted, impurity removal is conducted three times, various impurities in the raw materials can be removed, and then hydrolysis, decoloration by adding activated carbon, repeated ion exchange, evaporation and concentration and final drying processing are conducted, so that the powder xylitol with the purity of xylitol being 55% is obtained.It is proved by embodiments that the method is simple and feasible in operation, raw materials are easy to obtain, no pollution is generated in the operation process, the purity of xylitol is remarkably improved, and the yield of xylitol is remarkably raised.

Description

technical field [0001] The invention discloses a method for preparing powdered xylitol with a purity of 55%, and belongs to the technical field of xylose preparation. Background technique [0002] Xylitol, that is pentapentyl alcohol, is made from corn cob, bagasse, cottonseed hulls, birch and other substances containing pentosan, after hydrolysis, purification, hydrogenation, concentration, crystallization, centrifugation, drying, etc. The white crystals produced by the process are easily soluble in water, and the sweetness is equivalent to that of sucrose. It is edible and has a refreshing feeling in the mouth. At the same time, it also has special biochemical properties, such as being directly absorbed by the human body through the cell wall without insulin, and has the function of lowering blood lipids. It can also adjust the pH value of the cavity gums and resist the fermentation of oral microorganisms, and has special anti-caries properties. Therefore, xylitol is not ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C07C29/09C07C29/76C07C29/80C07C31/18A23L33/125
CPCC07C29/09C07C29/76C07C31/18Y02A40/90
Inventor 董燕敏
Owner CHANGZHOU UNIV
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