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Method for preparing feed grade xylooligosaccharide using corncobs

A technology of xylo-oligosaccharide and corn cob, which is applied in the field of making feed-grade xylo-oligosaccharide from corn cob, which can solve the problems of less utilization and burning of corn cob

Inactive Publication Date: 2017-04-26
河南坤之元生物科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

At present, the utilization of corncobs in my country is relatively small, basically in the low-level primary processing stage, and most of them are burned as farm fuel

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0031] A method for making feed grade xylo-oligosaccharides from corn cobs, comprising the steps of:

[0032] A, select qualified corncobs, corncobs are pulverized to obtain material, and the particle diameter of the pulverized corncobs is 0.1mm;

[0033] B, put the corncob obtained in step A into water and soak and add acetic acid, wherein the volume ratio of corncob to water is 1:7, the weight ratio of acetic acid to the corncob is 3:200, and the soaking time is 15min; It can be used as a catalyst to break the lignocellulose chain in the corn cob. This process is one of the important sections of xylose production and is the key to the quality of xylose and the difficulty of subsequent processing procedures.

[0034] C. High-pressure cooking the mixture obtained in step B to obtain a hydrolyzate, the cooking temperature is 110° C., the cooking pressure is 0.8 MPa, and the cooking time is 2.5 hours;

[0035] D, the hydrolyzate that step C obtains is cooled, and temperature is...

Embodiment 2

[0049] A method for making feed grade xylo-oligosaccharides from corn cobs, comprising the steps of:

[0050] A, select qualified corncob, corncob is pulverized and processed to obtain material, and the particle diameter of the pulverized corncob particle is 0.3mm;

[0051] B, put the corncob obtained in step A into water and soak and add acetic acid, wherein the volume ratio of corncob to water is 1:9, the weight ratio of acetic acid to the corncob is 5:200, and the soaking time is 25min; It can be used as a catalyst to break the lignocellulose chain in the corn cob. This process is one of the important sections of xylose production and is the key to the quality of xylose and the difficulty of subsequent processing procedures.

[0052] C. High-pressure cooking the mixture obtained in step B to obtain a hydrolyzate, the cooking temperature is 135° C., the cooking pressure is 0.8-1 MPa, and the cooking time is 3.5 hours;

[0053] D, the hydrolyzate that step C obtains is coole...

Embodiment 3

[0067] A method for making feed grade xylo-oligosaccharides from corn cobs, comprising the steps of:

[0068] A, select qualified corncobs, corncobs are pulverized to obtain material, and the particle diameter of the pulverized corncobs is 0.2mm;

[0069] B, put the corncob obtained in step A into water and soak and add acetic acid, wherein the volume ratio of corncob to water is 1:8, the weight ratio of acetic acid to the corncob is 1:50, and the soaking time is 20min; It can be used as a catalyst to break the lignocellulose chain in the corn cob. This process is one of the important sections of xylose production and is the key to the quality of xylose and the difficulty of subsequent processing procedures.

[0070] C. High-pressure cooking the mixture obtained in step B to obtain a hydrolyzate, the cooking temperature is 125° C., the cooking pressure is 0.8-1 MPa, and the cooking time is 3 hours;

[0071] D, the hydrolyzate that step C obtains is cooled, and temperature is ...

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Abstract

The invention discloses a method for preparing feed grade xylooligosaccharide using corncobs. The method comprises the steps of A, selecting qualified corncobs, and conducting smashing treatment on the corncobs to obtain the material; B, placing the corncobs obtained in the step A into water to be subjected to soaking and adding acetic acid; C, conducting high-pressure stewing on the mixture obtained in the step B to obtain hydrolysate; D, cooling the hydrolysate obtained in the step C; E, adding xylanase in the hydrolysate treated in the step D to be subjected to heat preservation saccharification; F, conducting temperature increasing sterilization on the saccharified liquor obtained in the step E; G, conducting temperature cooling on the saccharified liquor obtained in the step F; H, conducting extrusion for dehydration on the saccharified liquor obtained in the step G; I, conducting spray explosion treatment on the corncobs obtained in the step H; J, adding enzymes special for xylooligosaccharide into the material obtained in the step I. According to the technical scheme, the cornbobs can be fully saccharified, and the corncobs are fully utilized to obtain a larger amount of xylooligosaccharide.

Description

technical field [0001] The invention relates to a method for making xylo-oligosaccharides, in particular to a method for making feed-grade xylo-oligosaccharides from corn cobs. Background technique [0002] Xylo-oligosaccharides have good physiological properties, such as the proliferation ability of bifidobacteria, non-digestible properties, prevention of dental caries, and promotion of calcium absorption. It is an important functional oligosaccharide widely used in human food and animal feed. [0003] The preparation of xylo-oligosaccharides is mainly made from plant resources rich in xylan, such as corncobs, cottonseed hulls, peanut shells, bagasse and rice husks, etc., through acid hydrolysis, high-temperature cooking or enzymatic hydrolysis. As a large agricultural country, corn is one of the three major food crops in my country, and has abundant corncob raw material resources. At present, the utilization of corncobs in my country is relatively small, basically in the...

Claims

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Application Information

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IPC IPC(8): C12P19/14
Inventor 刘红春
Owner 河南坤之元生物科技有限公司
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