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Fiber oxidase composition for changing and improving properties of fibers, paper making method and application

A technology of fiber oxidase and composition, applied in the direction of oxidoreductase, textiles and papermaking, biochemical equipment and methods, etc., can solve the problems of reducing pulping freeness, reducing fiber yield, increasing paper density, etc., to achieve increased Effects of fiber reactivity, reduction of refining performance, and modification of beating performance

Active Publication Date: 2014-12-03
RISINGSTAR BIOTECH GUANGZHOU
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] (1) Increase the quantity of the product and increase the paper density; the disadvantage of this method is to increase the production cost and waste resources;
[0006] (2) Increase pulping, increase fiber surface separation, and increase paper strength; the disadvantage of this method is high energy consumption, reduced freeness of pulping, reduced fiber yield and increased drying energy consumption;
[0007] (3) Use chemicals such as dry strength agents / wet strength agents, such as cationic starch, anionic starch, sodium carboxymethyl cellulose, polyacrylamide, anionic polyacrylamide, and low molecular weight cationic polymers, to increase pulp The dehydration performance or strength of the method, the disadvantage of this method is high cost, passivation fiber, unfavorable to papermaking water system circulation, increase COD emission; and
[0008] (4) Increase the proportion of wood fiber pulp. The disadvantage of this method is that the cost is high and the dependence on imported raw materials is increased.
However, it has been found in practical applications that due to the reversibility of fibronectin (CBP) adsorption, especially when the polymerase TM When the product is added before refining, the pulp will produce a large number of new surfaces after refining. These new fiber surfaces will be exposed to the "attack" of cellulase. If the residence time is long, the fibers will be excessively sheared, resulting in paper loss. The strength of the product decreases

Method used

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  • Fiber oxidase composition for changing and improving properties of fibers, paper making method and application
  • Fiber oxidase composition for changing and improving properties of fibers, paper making method and application
  • Fiber oxidase composition for changing and improving properties of fibers, paper making method and application

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0074] Example 1 Effect of fiber oxidase and its different compositions on paper strength of bleached hardwood pulp

[0075] 1. Purpose of the experiment

[0076] The effects of fiber oxidase and its composition on the paper strength of bleached hardwood pulp were evaluated by comparative analysis.

[0077] 2. Experimental method

[0078] (1) Test material preparation

[0079] Bleached broadleaf chemical pulp is provided by the pulp mill of Shandong Wanguo Paper Industry No. 26.

[0080] Fiber oxidase (PMO) is GH61 provided by American Dyadic Company. This enzyme is produced from the strain Myceliophthora thermophila9 (also known as Sporotrichum thermophile). Its amino acid sequence is described in detail in US Pat.

[0081] The cellulolytic enzyme is the commercial product FiberZymeG200 of Dyadic Company, which is produced by the same bacterial strain as above. Other chemicals were purchased from SigmaAldrich.

[0082] (2) Papermaking method

[0083] A, pulping: 200 gra...

Embodiment 2

[0103] Example 2 Effect of fiber oxidase and its different compositions on paper strength of mechanical softwood pulp

[0104] 1. Purpose of the experiment

[0105] The effects of fiber oxidase and its different compositions on mechanical softwood pulp on its paper strength were evaluated by comparative analysis.

[0106] 2. Experimental method

[0107] (1) Test material preparation

[0108] The mechanical softwood pulp was supplied by the pulp mill of Shandong Wanguo Paper Industry No. 26.

[0109] Fiber oxidase (PMO) is GH61 provided by Dyadic Company of the United States. This enzyme is produced from the strain Myceliophthora thermophila. Its amino acid sequence is described in detail in US Patent No. 8,298,795 and US Patent Application USA2012 / 0083019.

[0110] The cellulolytic enzyme is the commercial product FiberZyme G200 of Dyadic Company, which is produced by the same bacterial strain as above.

[0111] (2) Papermaking method

[0112] A, pulping: 200 grams of pul...

Embodiment 3

[0131] Example 3 Effect of fiber oxidase and its composition on paper strength of unbleached chemical softwood pulp

[0132] 1. Purpose of the experiment

[0133] The effects of fiber oxidase and its different compositions on the paper strength of unbleached chemical softwood pulp were evaluated by comparative analysis.

[0134] 2. Experimental method

[0135] (1) Test material preparation

[0136] Unbleached chemical pulp (softwood pulp) was provided by Zhejiang Rongcheng Paper Industry.

[0137] Fiber oxidase (PMO) is GH61 provided by Dyadic Company of the United States. This enzyme is produced from the strain Myceliophthora thermophila. Its amino acid sequence is described in detail in US Patent No. 8,298,795 and US Patent Application USA2012 / 0083019.

[0138] The cellulolytic enzyme is the commercial product FiberZyme G200 of Dyadic Company, which is produced by the same bacterial strain as above.

[0139] (2) Papermaking method

[0140] A, pulping: 200 grams of pulp ...

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Abstract

The invention discloses a fiber oxidase composition for changing and improving the properties of fibers, a paper making method and application. The composition contains the following ingredients: a bio-enzyme ingredient and an auxiliary ingredient, wherein the bio-enzyme ingredient has an oxidation function on the fibers and is fiber oxidase which is used for changing the surface properties of the fibers through redox reaction; the auxiliary ingredient has the function of improving the catalytic activity of the fiber oxidase and is a fiber oxidase reaction product scavenger; the weight ratio of the bio-enzyme ingredient to the auxiliary ingredient is 1: (0.1-50). When the composition is used for treating paper pulp, not only is the strength property of paper remarkably enhanced, but also the draining property of the paper pulp is improved.

Description

technical field [0001] The invention relates to the technical field of biological enzymes and the use of biological enzymes to improve the physical and chemical properties of fibers, in particular to a composition for changing and improving fiber surface properties with fiber oxidase, a papermaking method and its application. Background technique [0002] China's paper industry has maintained a high growth rate for 10 consecutive years from 2000 to 2010. By 2011, my country's paper and cardboard production and consumption both exceeded 100 million tons, ranking first in the world. The main raw material of paper or cardboard is fiber. Because pulping and papermaking require a large amount of raw materials and have a certain impact on the environment, the paper industry in all countries in the world is currently producing compressed pulp to ensure forest resources. In addition, domestic raw material forests The construction of the base is slow, the supply of materials is limit...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C12N9/88C12N9/26C12N9/24C12N9/18C12N9/16C12N9/08C12N9/04C12N9/02D21H17/00D21H21/10
CPCC12N9/0006C12N9/0061C12N9/0065C12N9/16C12N9/18C12N9/2408C12N9/2411C12N9/2437C12N9/2445C12N9/248C12N9/88C12Y101/01001C12Y101/03004C12Y101/99018C12Y110/03002C12Y111/01006C12Y111/01014C12Y302/01004C12Y302/01021C12Y302/01091D21H17/005D21H21/10D21H21/30
Inventor 王祥槐谢焱
Owner RISINGSTAR BIOTECH GUANGZHOU
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