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A kind of method utilizing biological enzyme to prepare corn bract fiber

A corn husk and biological enzyme technology, which is applied in the chemical post-processing of fibers, fiber processing, plant raw materials, etc., can solve the problems of high fiber strength, low fiber strength, and large fiber damage in corn husk, and achieve increased capillary effect. , The effect of fiber softness and small fiber damage

Active Publication Date: 2020-09-29
QIQIHAR UNIVERSITY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] In order to solve the problems that the method of using chemical reagents to prepare corn husk fiber causes great damage to the fiber, the strength of the obtained fiber is low, the fiber is brittle and hard, and the softness is poor, the invention discloses a method for preparing corn husk fiber by using biological enzymes. The prepared corn husk fiber has high strength and good softness

Method used

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  • A kind of method utilizing biological enzyme to prepare corn bract fiber
  • A kind of method utilizing biological enzyme to prepare corn bract fiber

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0027] (1) select corn husks without mildew, clean, and pretreat the cleaned corn husks, the bath ratio is 1:50 (kg / L), the concentration of sodium hydroxide is 0.3wt%, and the concentration of sodium carbonate The concentration is 0.5wt%, the concentration of sodium polyphosphate is 0.5wt%, the treatment temperature is 100°C, the treatment time is 20min, and the treated corn husks are rinsed with water;

[0028] (2) carry out biological enzyme treatment to the corn husk pretreated in step (1), bath ratio is 1:50 (kg / L), the concentration of laccase is 0.5wt%, pH is 4.6, and treatment temperature is 45 ℃ , the treatment time is 5h, the treated corn bract fiber is rinsed with water, and dried;

[0029] (3) Soften the corn husk fiber of enzyme treatment in step (2), bath ratio is 1:20 (kg / L), amino silicone oil concentration is 6wt%, 40 ℃ of treatment temperature, treatment time 60min, then The softened corn husk fiber is dried.

Embodiment 2

[0031] (1) select corn husks without mildew, clean, and pretreat the cleaned corn husks, the bath ratio is 1:50 (kg / L), the concentration of sodium hydroxide is 0.3wt%, and the concentration of sodium carbonate The concentration is 0.5wt%, the concentration of sodium polyphosphate is 1wt%, the treatment temperature is 90°C, the treatment time is 25min, and the treated corn husks are rinsed with water;

[0032] (2) carry out biological enzyme treatment to the corn husk pretreated in step (1), bath ratio is 1:50 (kg / L), the concentration of laccase is 0.5wt%, pH is 5.0, and treatment temperature is 50 ℃ , the treatment time is 6 hours, the treated corn bract fiber is rinsed with water, and dried at 60° C.;

[0033] (3) Soften the corn bract fiber of enzyme treatment in step (2), bath ratio is 1:20 (kg / L), amino silicone oil concentration is 4wt%, 40 ℃ of treatment temperature, treatment time 60min, then The softened corn husk fiber is dried.

Embodiment 3

[0035] (1) select corn husks without mildew, clean, and pretreat the cleaned corn husks, the bath ratio is 1:50 (kg / L), the concentration of sodium hydroxide is 0.8wt%, and the concentration of sodium carbonate The concentration is 0.8wt%, the concentration of sodium polyphosphate is 0.5wt%, the treatment temperature is 85°C, the treatment time is 25min, and the treated corn husks are rinsed with water;

[0036] (2) carry out biological enzyme treatment to the corn husk pretreated in step (1), bath ratio is 1:50 (kg / L), the concentration of laccase is 0.5wt%, pH is 5.4, and treatment temperature is 55 ℃ , the treatment time is 5 hours, the treated corn bract fibers are rinsed with water, and dried at 60° C.;

[0037] (3) Soften the corn husk fiber of enzyme treatment in step (2), bath ratio is 1:20 (kg / L), amino silicone oil concentration is 6wt%, 40 ℃ of treatment temperature, treatment time 60min, then The softened corn husk fiber is dried.

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Abstract

The invention belongs to the technical field of application of renewable resources, and in particular relates to a method for preparing corn bract fiber by using biological enzymes. The method includes the following steps: (1) Pretreating corn bracts to obtain pretreated corn bracts leaves; (2) performing biological enzyme treatment on the pretreated corn bracts in step (1) to obtain enzyme-treated corn bract fibers; (3) softening the enzyme-treated corn bract fibers in step (2) , dry it. The present invention pretreats corn husks with a mixed aqueous solution of sodium hydroxide, sodium carbonate and sodium polyphosphate at a low concentration, so that the corn husks are swelled, the capillary effect of fibers is increased, and the biological enzyme liquid is promoted in subsequent steps. Osmosis, less damage to fibers, is conducive to obtaining high-strength fibers; using biological enzymes to effectively decompose glue impurities in corn bracts to avoid damage to fibers; biological enzymes can decompose most of the lignin, and the obtained fibers are more soft.

Description

technical field [0001] The invention belongs to the technical field of renewable resources application, and in particular relates to a method for preparing corn husk fiber by using biological enzymes. Background technique [0002] Corn is the main food crop in my country, with a planting area of ​​24.4983 million hectares, ranking third among food crops. my country is rich in corn husk resources, and about 600 kg of corn husks can be harvested per hectare of corn. Corn husks are usually discarded or burned, which not only causes waste of resources, but also causes a series of environmental problems. The utilization of corn bracts is mainly weaving handicrafts at present, because the demand is small, it has not been promoted. Effective utilization of maize bracts is of great significance to alleviate the pressure on resources and environment in my country and promote sustainable economic development. Corn bract fiber is a natural cellulose fiber, which has excellent charac...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): D01C1/00
CPCD01C1/00
Inventor 田英华
Owner QIQIHAR UNIVERSITY
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