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Method for preparing xylitol from corncobs

A corncob and xylitol technology, which is applied in the directions of xylose production, chemical instruments and methods, hydroxyl compound preparation, etc., can solve the problems of increased inhalation, environmental pollution, etc., and achieves low production cost, scientific and reasonable production process, Nutritious effect

Inactive Publication Date: 2018-08-10
柳滨
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] The purpose of the present invention is to provide a method for producing xylitol from corn cobs, which solves the problem that the corn cobs in the prior art are burned as firewood, which brings pollution to the environment and greatly increases the inhaled substances in the air. The problem

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0034] The method for producing xylitol from corncobs is characterized by comprising the following steps:

[0035] Step 1. Screening of corn cobs: select dry corn cobs that are free of impurities, dust, mildew, and low moisture content of the year;

[0036] Step 2. Pretreatment: After screening, remove the impurities in the raw materials, pulverize the corncob with a moisture content of 12.18% with a pulverizer, put the pulverized raw materials in a stainless steel kettle, and then add water and steam at a temperature of 100°C for 60%. Minutes, drain the water, and then treat it with 0.1% dilute sulfuric acid for use;

[0037] Step 3. Hydrolysis: the corncob pretreated by the above acid adopts low pressure hydrolysis method, the control conditions of hydrolysis are sulfuric acid concentration 0.5%, hydrolysis temperature 100°C, hydrolysis time 4 hours;

[0038] Step 4. Neutralization: When lime is used as a neutralizer, the prepared emulsion, the specific gravity of the emulsion is 1....

Embodiment 2

[0046] The method for producing xylitol from corncobs is characterized by comprising the following steps:

[0047] Step 1. Screening of corn cobs: select dry corn cobs that are free of impurities, dust, mildew, and low moisture content of the year;

[0048] Step 2. Pretreatment: After screening, remove the impurities in the raw materials, pulverize the corncob with a moisture content of 12.18% with a pulverizer, put the pulverized raw materials in a stainless steel kettle, and then add water and steam at a temperature of 100°C for 60%. Minutes, drain the water, and then treat it with 0.1% dilute sulfuric acid for use;

[0049] Step 3. Hydrolysis: the corncob pretreated by the above acid adopts low pressure hydrolysis method, and the control conditions of hydrolysis are sulfuric acid concentration 0.5-1%, hydrolysis temperature 100-120°C, hydrolysis time 4 hours;

[0050] Step 4. Neutralization: When lime is used as a neutralizer, the prepared emulsion, the specific gravity of the emul...

Embodiment 3

[0058] The method for producing xylitol from corncobs includes the following steps:

[0059] Step 1. Screening of corn cobs: select dry corn cobs that are free of impurities, dust, mildew, and low moisture content of the year;

[0060] Step 2. After screening, remove the impurities in the raw materials, pulverize the corncob with a moisture content of 12.18% with a pulverizer, put the pulverized raw materials in a stainless steel kettle, and then add water and steam for 60 minutes at a temperature of 100°C. The water is drained, and then treated with 0.1% dilute sulfuric acid for use;

[0061] Step 3. Hydrolysis: the corncob pretreated with the above acid is subjected to low pressure hydrolysis, and the control conditions for hydrolysis are sulfuric acid concentration of 0.75%, hydrolysis temperature of 110°C, and hydrolysis time of 4 hours;

[0062] Step 4. Neutralization: When lime is used as a neutralizer, the prepared emulsion, the specific gravity of the emulsion is 1.1-1.16, and...

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Abstract

The invention discloses a method for preparing xylitol from corncobs. The method is characterized by comprising the following steps of 1, screening corncobs; 2, pretreating the corncobs; 3, performinghydrolysis: treating the corncobs subjected to acid pretreatment by a low-pressure hydrolysis method; 4, performing neutralization by using lime as a neutralizing agent; 5, performing evaporation: the sugar liquid content after the neutralization deacidification is 5 percent, reduced pressure evaporation needs to be performed; 6, performing decoloring: using an active carbon decoloring method fornormal pressure operation; 7, performing ion exchange; 8, performing hydrogenation treatment; 9, performing concentration and crystallization; 10, performing drying treatment. The manufacturing process is scientific and reasonable; the method for preparing xylitol from corncobs belongs to one corn deep processing technology; the production cost is low. The xylitol is applicable to the use in various industries, particularly in food industries. The corn has rich nutrition, and can be completely used as daily life diet for people to eat for a long time.

Description

Technical field [0001] The invention belongs to the field of food biotechnology and relates to a method for preparing xylitol from corn cobs. Background technique [0002] Xylose is a component of polysaccharide "hydroglycan". In addition to being used to prepare xylitol and feed yeast, it is also widely used in chemical, hospital, food, leather, dye and other industrial sectors. The food industry is mainly used as heat The sweetness additive. Agricultural plant waste corn cobs contain about 1 / 4 to 1 / 3 of pentose polysaccharides, and pentose polysaccharides can produce xylose through acid hydrolysis. Therefore, corn cobs are excellent raw materials for the production of xylose. At present, most corn cobs are burned as firewood, which brings pollution to the environment and increases the inhaled substances in the air. So far, there is no good solution. Summary of the invention [0003] The purpose of the present invention is to provide a method for producing xylitol from corncobs...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C07C29/141C07C31/18
CPCC07C29/141C13K13/002C07C31/18
Inventor 柳滨
Owner 柳滨
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