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Energy-saving preparation method of low-ingredient xylo-oligosaccharide powder

A technology for xylo-oligosaccharides and wood oligosaccharides, which is applied in the preparation of oligosaccharides and sugar derivatives, chemical instruments and methods, etc. Use effect and scope and other issues, to achieve the effect of facilitating operation and process adjustment, reducing the production of pigments, and reducing production costs

Active Publication Date: 2015-05-20
SHANDONG LONGLIVE BIO TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, macromolecular substances such as dextrin and starch in powdered sugar affect the purity, solubility and taste of xylooligosaccharide powder, which in turn affects the use effect and scope of xylooligosaccharide

Method used

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  • Energy-saving preparation method of low-ingredient xylo-oligosaccharide powder

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0027] Embodiment 1: the preparation of low-component xylo-oligosaccharide powder

[0028] (1) The corncobs are cyclically cleaned by hydrochloric acid with a mass concentration of 0.2% at 70°C, and the cleaning solution is recycled for use; the cleaned materials and production water are slurried at a ratio of 1:8 (g / ml), and after being stirred evenly, the Pretreatment at 160°C for 3 hours to obtain a feed solution rich in soluble xylan hemicellulose fragments; add 40 IU of xylanase to the feed solution according to the dry weight of the material for enzymolysis, and adjust the pH value of the feed solution to 4 , incubating at 60°C for 12 hours; the enzymatic solution was separated and purified to obtain a xylooligosaccharide solution with a mass concentration of 4%, and the xylooligosaccharide component was about 75%;

[0029] (2) The xylo-oligosaccharide liquid of step (1) is concentrated to a concentration of 20% xylo-oligosaccharide liquid through a three-effect evaporat...

Embodiment 2

[0040]Embodiment 2: the preparation of low-component xylo-oligosaccharide powder

[0041] (1) The corn stalks are cyclically cleaned with 0.5% sodium hydroxide at 70°C, and the cleaning solution is recovered and recycled; the cleaned materials and production water are mixed at a ratio of 1:10 (g / ml), and stirred evenly Afterwards, the pressure is 3.0MPa, and the time is 60s high-pressure instantaneous blasting treatment to obtain a feed liquid rich in soluble xylan hemicellulose fragments; add 80IU xylanase to the feed liquid according to the dry weight of the material for enzymatic hydrolysis , adjust the pH value of the feed solution to 8, and keep it warm at 45°C for 24 hours; the enzymolysis solution is separated and purified to obtain a xylooligosaccharide liquid with a mass concentration of 5%; the xylooligosaccharide component is about 70%.

[0042] (2) Concentrate the sugar solution in step (1) to a concentration of 20% xylooligosaccharide liquid through a three-effect...

Embodiment 3

[0053] Embodiment 3: the preparation of low-component xylo-oligosaccharide powder

[0054] (1) Cottonseed hulls are cyclically cleaned with hydrochloric acid with a mass concentration of 0.9% at 70°C, and the cleaning solution is recovered and recycled; the cleaned materials and production water are mixed at a ratio of 1:10 (g / ml), and after being stirred evenly, the The pressure is 2.0MPa, and the time is 120s high-pressure instantaneous blasting treatment to obtain a feed liquid rich in hemicellulose fragments of soluble xylan; add 20IU xylanase to the feed liquid according to the dry mass of the material for enzymolysis, adjust The pH value of the feed solution is 6, and it is kept at 85°C for 4 hours. After the enzymolysis solution is separated and purified, a xylooligosaccharide liquid with a mass concentration of 4% is obtained, and the xylooligosaccharide component is about 73%;

[0055] (2) The sugar solution in step (1) is concentrated to a xylooligosaccharide solutio...

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Abstract

The invention discloses an energy-saving preparation method of low-ingredient xylo-oligosaccharide powder. The method comprises the following steps: (1) concentrating an xylo-oligosaccharide solution, of which the mass concentration is 1-6%, through triple-effect concentration until the mass concentration is 15-25%, wherein the content of xylo-oligosaccharide in the xylo-oligosaccharide solution is 65-75%; (2) concentrating the xylo-oligosaccharide solution, of which the mass concentration is 15-25%, through scraper evaporation until the mass concentration is 55-85%, wherein for the scraper evaporation, the temperature is controlled to 90-120 DEG C, the evaporating pressure is -0.08 to -0.098MPa, the discharging temperature is controlled to 85-115 DEG C, and the revolving speed of scrapers is controlled to 3-5m / s; (3) directly feeding the xylo-oligosaccharide solution obtained in the step (2) into a vacuum belt drier for evaporation drying and crushing, thereby obtaining the low-ingredient xylo-oligosaccharide powder without excipient. The preparation method disclosed by the invention has the advantages that the time for high-temperature concentration is shortened, the generation of pigments is reduced, and the chromaticity of xylo-oligosaccharide is lowered; the excipient is not added to the xylo-oligosaccharide powder, so that the solubility of the product is improved, the taste of the product can be genuine, and the range of use of the xylo-oligosaccharide powder is enlarged.

Description

technical field [0001] The invention relates to a method for preparing energy-saving low-component xylo-oligosaccharide powder, and belongs to the technical field of functional sugar alcohol production. Background technique [0002] Xylo-oligosaccharides are a kind of oligosaccharides, which are formed by β-1,4-endoxylanase with xylan as a substrate and hydrolyze β-1,4 glycosidic bonds with a degree of polymerization of 2-7 of oligosaccharides. Xylo-oligosaccharides can improve the balance of the digestive tract flora of organisms (humans and animals), promote the growth of beneficial bacteria in the digestive tract, inhibit the reproduction of harmful microorganisms, promote nutrient absorption, and improve the body's immunity. [0003] At present, xylo-oligosaccharide products on the market can be divided into xylo-oligosaccharide syrup and xylo-oligosaccharide powder according to the state. In the process of concentration, multi-effect evaporators are generally used to c...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08B37/14C07H3/04C07H3/06C07H1/06C12P19/14
Inventor 刘宪夫李莹姜顺晨王吉垒覃树林肖林
Owner SHANDONG LONGLIVE BIO TECH CO LTD
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