Microbial degumming method of corn bran fiber

A degumming method and corn husk technology are applied in the field of microbial degumming of corn husk fibers, which can solve the problems of fiber damage, environmental pollution and serious problems, and achieve the effects of small fiber damage, light environmental pollution and low fiber residual glue rate.

Inactive Publication Date: 2017-10-27
QIQIHAR UNIVERSITY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] At present, alkali degumming is mainly used for corn husk degumming. Although chemical and biological combined degumm

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Example Embodiment

[0018] Example 1

[0019] (1) Select corn husks that are not moldy and remove dust and other debris from the corn husks;

[0020] (2) The corn husk fiber is soaked and pretreated, the bath ratio is 1:10 (w / v), the BX concentration of the powder is 2g / L, and the treatment time is 4h;

[0021] (3) Aspergillus niger ( Aspergillus niger ) HYA4 is inoculated on a solid fermentation medium, the medium composition is bran:straw=3:2, ammonium sulfate addition is 5.5%, material to water ratio is 1:3, and the initial pH is 5.5. After culturing at 36°C for 72 hours, the fermentation is terminated, and the water ratio is 1:20 to transfer to Aspergillus niger ( Aspergillus niger ) The HYA4 solid fermentation culture was leached with water for 1.5 hours, and then centrifuged at a speed of 3000r / min and a centrifuge time of 10min. The supernatant obtained was used as the degumming solution.

[0022] (4) Microbial degumming of corn husk fibers, the corn husk fibers pretreated in step (2) are placed...

Example Embodiment

[0026] Example 2

[0027] (1) Select corn husks that are not moldy and remove dust and other debris from the corn husks;

[0028] (2) The corn husk fiber is soaked and pretreated, the bath ratio is 1:15 (w / v), the BX concentration of the stretched powder is 1.5g / L, and the treatment time is 5h;

[0029] (3) Aspergillus niger ( Aspergillus niger ) HYA4 is inoculated on a solid fermentation medium, the medium composition is bran:straw=3:2, ammonium sulfate addition is 5.5%, material to water ratio is 1:3, and the initial pH is 5.5. After culturing at 36°C for 72 hours, the fermentation was terminated, and the water ratio was 1:20 to transfer the water to Aspergillus niger ( Aspergillus niger ) The HYA4 solid fermentation culture was leached with water for 1.5 hours, and then centrifuged at a speed of 3000r / min and a centrifuge time of 10min. The supernatant obtained was used as the degumming solution.

[0030] (4) Microbial degumming of corn husk fibers, the corn husk fibers pretreate...

Example Embodiment

[0034] Example 3

[0035] (1) Select corn husks that are not moldy and remove dust and other debris from the corn husks;

[0036] (2) The corn husk fiber is soaked and pretreated, the bath ratio is 1:10 (w / v), the BX concentration of the stretched powder is 2g / L, and the treatment time is 5h;

[0037] (3) Aspergillus niger ( Aspergillus niger ) HYA4 is inoculated on a solid fermentation medium, the medium composition is bran:straw=3:2, ammonium sulfate addition is 5.5%, material to water ratio is 1:3, and the initial pH is 5.5. After culturing at 32°C for 72 hours, the fermentation was terminated, and the water ratio was 1:20 to transfer the water to Aspergillus niger ( Aspergillus niger ) The HYA4 solid fermentation culture was leached with water for 1.5 hours, and then centrifuged at a speed of 3000r / min and a centrifuge time of 10min. The supernatant obtained was used as the degumming solution.

[0038] (4) Microbial degumming of corn husk fibers. Put the pretreated corn husk fib...

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Abstract

The invention provides a microbial degumming method of a corn bran fiber. The method is characterized by comprising the following steps of (1) selecting corn bran without mildewing, (2) performing soaking pretreatment on the corn bran fiber, (3) performing aspergillus niger HYA4 solid fermentation to prepare microbial degumming liquid of the corn bran fiber, (4) performing microbial degumming on the corn bran fiber, (5) performing potassium hydroxide solution soaking, and (6) performing water washing and drying to obtain the corn bran fiber. The method is low in corn bran fiber damage; and the prepared corn bran fiber is lower in residual gum content, higher in strength and soft.

Description

technical field [0001] The invention relates to a preparation process for reusing crop waste, in particular to a microbial degumming method for corn husk fiber, and belongs to the technical field of renewable resource utilization. Background technique [0002] Humans have a long history of planting corn. In my country, the sown area of ​​corn is second only to rice and wheat, and ranks third among food crops. In addition to harvesting corn kernels as food every year, a large amount of corn husks will also be produced. This is a huge and valuable resource, but it has not been rationally and effectively developed and utilized for a long time. Most of the corn husks are used for cooking and heating, and the rest are abandoned in the fields or burned, which not only frequently causes fires and other accidents, seriously pollutes the environment, but also causes a great waste of resources. Degumming corn husks to obtain corn husk fibers realizes the reuse of waste corn husks, wh...

Claims

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Application Information

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IPC IPC(8): D01C1/00
CPCD01C1/00D01C1/02D01C1/04
Inventor 田英华刘晓兰王路
Owner QIQIHAR UNIVERSITY
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