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Preparation method for xylose

A xylose and acid solution technology, which is applied in sugar production, sugar production, food science, etc., can solve the problems of interference with xylose crystallization, low yield of xylose crystallization, waste of resources, etc.

Inactive Publication Date: 2014-02-05
广西金麦克生物科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The impurity content of sugarcane bagasse acid hydrolysis filtrate is lower than that of corncob acid hydrolyzate, but the content of xylose is low and the content of arabinose is high, and because arabinose and xylose are isomers, the physical and chemical properties are very close, and arabinose It will interfere with the crystallization of xylose, thereby affecting the crystallization yield of xylose, resulting in only about 45% of the crystallization yield of xylose prepared from bagasse
Therefore, the crystallization yield of xylose is currently low, resulting in a certain waste of resources

Method used

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Examples

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preparation example Construction

[0034] The invention discloses a preparation method of xylose. Those skilled in the art can refer to the content herein to implement the preparation method to obtain xylose. In particular, it should be pointed out that all similar substitutions and modifications are obvious to those skilled in the art, and they are all considered to be included in the present invention. The preparation method of the present invention has been described through preferred embodiments, and relevant personnel can obviously make changes or appropriate changes and combinations to the preparation method herein without departing from the content, spirit and scope of the present invention to realize and apply the technology of the present invention .

[0035] The reagents and raw materials used in the preparation method of xylose provided by the present invention can be purchased from the market.

Embodiment 1

[0037] The preparation of embodiment 1 xylose

[0038]Harvest fresh sugarcane leaves, put them into a dehydration dryer and dry them to obtain 5 kg of dry sugarcane leaves, cut them into 1-2 cm pieces with a grass cutter, and collect the pieces; put the resulting pieces into an ultrasonic cleaning tank and wash them with water for 2 -3 times, collect the cleaned sugarcane leaf fragments; put the obtained sugarcane leaf fragments into the extraction pot, add 50kg of water, stir evenly, heat to 80°C, soak for 120min, filter, collect the filter residue, dry and weigh 4.6kg . Rinse the obtained filter residue with 10L of water and put it into a reaction kettle, add 46kg of sulfuric acid solution with a mass percentage of 0.2%, mix well, heat to 105°C, soak for 120min, filter, collect the filter residue, dry and weigh 3.5kg. After rinsing the obtained filter residue with 10L of water, add 35kg of sulfuric acid solution with a mass percentage of 1.5% to mix, pour it into the reacti...

Embodiment 2

[0052] The preparation of embodiment 2 xylose

[0053] Gather fresh sugarcane tops, put them into a dehydration dryer and dry them to obtain 5 kg of dry sugarcane tops, cut them into 1-2 cm pieces with a grass cutter, and collect the pieces; wash the resulting pieces with water 2-3 times, Collect the cleaned sugarcane tip fragments; put the obtained sugarcane tip fragments into an extraction pot, add 75kg of water, stir evenly, heat to 85°C, soak for 90min, filter, collect filter residue, dry and weigh 4.75kg. Rinse the resulting filter residue with 10L of water and put it into the reactor, add 71.25kg of sulfuric acid solution with a mass percentage of 0.20%, mix well, heat to 115°C, soak for 90min, filter, collect the filter residue, dry and weigh 3.6kg . After rinsing the obtained filter residue with 10L of water, add 21.6kg of sulfuric acid solution with a mass percentage of 2.0% to mix, pour into the reaction kettle, stir evenly, raise the temperature to 115°C, soak for ...

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Abstract

The invention belongs to the technical field of plant extraction and discloses a preparation method for xylose. The preparation method for the xylose comprises the following steps of collecting sugarcane leaves and / or sugarcane tips, and collecting filter residues through first filtration to obtain a second product; mixing the obtained second product with a first acidic solution, performing secondary immersion, and collecting filter residues to obtain a third product; mixing the obtained third product and a second acidic solution, performing third immersion, and collecting filtrate; performing decoloring, acid neutralization and impurity removal on the obtained filtrate in sequence, concentrating the filtrate to obtain an xylose concentrated solution, and crystallizing and drying the xylose concentrated solution to obtain the xylose. The preparation method for the xylose is easy to operate; influence factors on xylose crystallization are eliminated, and the crystallization rate of the xylose is improved; the sugarcane leaf resource and the sugarcane tip resource are fully used.

Description

technical field [0001] The invention belongs to the technical field of plant extraction, in particular to a preparation method of xylose. Background technique [0002] Xylose is a kind of pentose sugar, which often exists in the form of pyran ring in nature. It is a component of xylan and widely exists in plant hemicellulose. Xylose is easily soluble in hot ethanol and pyrimidine, and its sweetness is 70% of that of sucrose. It has been approved as a non-caloric sweetener by many countries. The study also found that xylose has a high proliferation effect on bifidobacteria in the human intestinal tract. Eating xylose can improve the microenvironment of the human body and improve the body's immunity; xylose is not used by oral microorganisms and has a part of dietary fiber Physiological function, can lower serum cholesterol, prevent intestinal cancer. At the same time, xylose is an important raw material for the preparation of xylitol, which is widely used in food, medicine,...

Claims

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Application Information

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IPC IPC(8): C13K13/00
Inventor 许万根孙长青黄照狗李诧诧
Owner 广西金麦克生物科技有限公司
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