Method for preparing xylooligosaccharide from biomass raw material and application of xylooligosaccharide in preparation of feed additive

A technology of biomass raw materials and feed additives, applied in the preparation of sugar derivatives, oligosaccharides, animal feed, etc., can solve the problems of preparation of feed grade xylooligosaccharides, long production cycle, large amount of reagents, etc., and achieve palatability Improvement, short production cycle, and the effect of increasing productivity

Active Publication Date: 2022-05-27
CHANGSHA LVYE BIOTECHNOLOGY CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003]At present, the main preparation methods of feed-grade xylo-oligosaccharides include crushing, physical and chemical pretreatment, acid-base neutralization, enzymatic hydrolysis, desalination, decolorization and concentration, etc. There are problems such as complex process, long production cycle, high energy consumption and large amount of reagents, and the obtained xylooligosaccharides still need to add a large amount of maltodextrin, corn starch and β-cyclodextrin and other auxiliary materials to be further made into feed additives
[0004] In addition, in the prior art, the raw material for the preparation of feed grade xylo-oligosaccharides is mainly corn cobs, and there are agricultural and forestry wastes such as straws and branches and rice husks in some areas. , Bagasse and other agricultural processing wastes are used as raw materials to prepare feed grade xylooligosaccharides, but there is no report on the preparation of feed grade xylooligosaccharides from reed and Nandi biomass

Method used

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  • Method for preparing xylooligosaccharide from biomass raw material and application of xylooligosaccharide in preparation of feed additive
  • Method for preparing xylooligosaccharide from biomass raw material and application of xylooligosaccharide in preparation of feed additive
  • Method for preparing xylooligosaccharide from biomass raw material and application of xylooligosaccharide in preparation of feed additive

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Experimental program
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Effect test

Embodiment 1

[0056] Embodiment 1 A kind of method of utilizing Nandi to prepare xylo-oligosaccharides and its application in the preparation of feed additives

[0057] 1. Raw materials used:

[0058] Nandi biomass with moisture content less than 0.001wt% and component content of glucan 35.6wt%, xylan 20.3wt%, arabinan 2.5wt%, lignin 25.5wt%, ash 3.5wt% and impurity balance .

[0059] 2. Preparation method

[0060] like figure 1 As shown, 1.5kg of Nandi biomass was pulverized to a 5-mesh sieve, mixed in a ratio of 1 g (Nandi biomass powder): 10 mL (deionized water) and added to a 25L autoclave, heated at 190° C., stirring 10min at 700rpm.

[0061] After the reaction was finished, it was cooled with water quickly to ensure that the reaction system was cooled to room temperature within 30 min, and 12.7 L of the hydrolysis mixed solution was obtained by solid-liquid separation of the pressure filtration equipment; Filtration and impurity removal were carried out, followed by interception ...

Embodiment 2

[0075] Embodiment 2 A kind of method of utilizing reed to prepare xylo-oligosaccharide and its application in preparing feed additive

[0076] 1. Raw materials used:

[0077] Reed biomass with moisture content less than 0.001wt% and component content of glucan 37.8wt%, xylan 18.0wt%, arabinan 1.2wt%, lignin 26.2wt%, ash 5.1wt% and impurity balance .

[0078] 2. Preparation method

[0079] The 1.5kg reed biomass is pulverized to a 5 mesh sieve, mixed with a ratio of 1g (reed biomass powder): 10mL (deionized water), and added to a 25L autoclave, heated to 190° C., at a stirring speed of 700rpm Condition for 10min.

[0080] After the reaction was completed, the water was quickly cooled to ensure that the reaction system was cooled to room temperature within 30 min, and 12.6 L of the hydrolysis mixed solution was obtained by solid-liquid separation of the pressure filtration equipment; Filtration and impurity removal were carried out, followed by interception and concentration...

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Abstract

The invention discloses a method for preparing xylooligosaccharide from a biomass raw material and application of the xylooligosaccharide to preparation of a feed additive, and the preparation method comprises the following steps: removing impurities from the biomass raw material containing lignocellulose, crushing, adding water, uniformly mixing, adding into a high-pressure reaction kettle, carrying out subcritical hydrothermal hydrolysis reaction at 170-220 DEG C under the condition of homogeneous stirring, filtering, washing, and drying to obtain the xylooligosaccharide. And after the reaction is finished, rapidly cooling to normal temperature, carrying out solid-liquid separation, collecting a hydrolysis mixed solution, and finally, carrying out post-treatment. The preparation of the xylooligosaccharide can be completed through a one-step subcritical hydrothermal hydrolysis reaction, and the particle size of the crushed biomass raw material and the subcritical hydrothermal hydrolysis reaction conditions are synergistically optimized, so that the yield of the xylooligosaccharide can be remarkably improved, and the generation of byproducts can be effectively reduced; the prepared xylooligosaccharide is rich in polysaccharide active ingredients, so that the utilization of the feed by animals can be effectively promoted; in the preparation process, the use of auxiliary materials such as maltodextrin, corn starch and beta-cyclodextrin is avoided, and the production cost can be remarkably reduced.

Description

technical field [0001] The invention belongs to the technical field of preparation of xylo-oligosaccharides, and more particularly relates to a method for preparing xylo-oligosaccharides by using biomass raw materials and its application in the preparation of feed additives. Background technique [0002] Xylo-oligosaccharide, also known as Xylooligosaccharide (XOS), is a mixture of oligosaccharides composed of 2-7 xylose units linked by β-1,4 glycosidic bonds (GB / T 23747-2009). As a super prebiotic, xylo-oligosaccharide has the functions of low calorie, good stability, and inhibition of intestinal inflammatory factors. It is 10-20 times of prebiotics and is an important functional food and feed additive. [0003] At present, the main preparation methods of feed-grade xylo-oligosaccharides include pulverization, physical and chemical pretreatment, acid-base neutralization, enzymatic hydrolysis, desalination, decolorization and concentration, etc., which are complicated in pr...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C07H1/00C07H1/06C07H3/06A23K20/163
CPCC07H1/00C07H1/06C07H3/06A23K20/163Y02P60/87
Inventor 李蒙易自力文利新
Owner CHANGSHA LVYE BIOTECHNOLOGY CO LTD
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