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Bacillus cereus

A typical technology of Bacillus cereus, applied in the direction of bacteria, microorganisms, microorganisms, etc., can solve problems such as inability to adapt, and achieve the effects of good stability, stable performance, and high enzyme production activity

Active Publication Date: 2021-03-19
嘉兴温华环保科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

There are still many problems in its wide application, resulting in the reality of selective use by enterprises
[0005] In addition, the enzyme production activity of the strains in the prior art is generally not well adapted to the papermaking process of waste paper at the same time.

Method used

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  • Bacillus cereus
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Examples

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Effect test

preparation example Construction

[0060] The preparation method of the composite enzyme preparation of the present invention is as follows: the raw material enzyme preparations are subjected to pretreatment respectively, and then mixed uniformly in proportion, then an appropriate amount of preservative and enzyme protective agent are added, sterilized by a diatomaceous earth filter, and then passed through the determination Enzyme activity, quantitative packaging, and become a product.

[0061] The invention also discloses a papermaking process of waste paper, in which the compound enzyme preparation is continuously added through a metering pump into the hydraulic pulper in waste paper pulping, and the compound enzyme preparation is added according to the standard of 100 grams per ton of dry raw material;

[0062] The components and mass percentages of the compound enzyme preparation are as follows:

[0063] Neutral endo-pectate lyase (enzyme activity ≥ 20000u / ml): 25%-35%;

[0064] Endo-cellulase (enzyme act...

Embodiment 1

[0078] On July 11, 2017, Dongguan Xufeng Paper Co., Ltd. began to try out the compound enzyme preparation of the present invention. It was added and used at 11:00 am on July 11, and the trial ended on September 21. After more than 60 days of application Test, the specific test data are shown in the table below:

[0079] Table 1 Test data

[0080]

[0081] Among them: due to the failure of the retention aid adding pump during September 12-September 16, the data during the period were not included in the statistics.

[0082] The test data in Table 1 above shows that:

[0083] 1. The concentration of the Internet is reduced, and the load of the network department is reduced;

[0084] 2. The concentration of white water under the screen is reduced, and the retention rate is significantly improved, which is beneficial to sludge reuse;

[0085] 3. The water line is shortened, and the filterability is enhanced, which is beneficial to save steam.

[0086] Table 2 Comparison of ...

Embodiment 2

[0099] On April 28, 2017, Guangzhou Huadu Changxing Paper Co., Ltd. began to try out a series of papermaking enzyme products provided by the present invention ---, as of June 2, after 35 days of continuous application tests, the specific test data are as follows:

[0100] Table 4 Comparison of test data

[0101]

[0102] Table 5: Analysis of economic benefits per ton of paper after using papermaking enzymes (estimation)

[0103]

[0104] Note: Papermaking enzymes are calculated at 80,000 yuan / ton (excluding tax).

[0105] From the above data analysis, it can be known that the composite enzyme preparation of the present invention can achieve the following effects:

[0106] 1. The sticky matter is significantly reduced, and the sticky matter in the drying section is significantly reduced, and the paper breakage caused by this is reduced;

[0107] 2. The speed difference of the wire section is significantly reduced, the dehydration of the wire section is obviously improve...

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Abstract

The invention discloses a bacillus cereus (Bacillus cereus WENA703), which is preserved in the China Center for Type Culture Collection, and the preservation number is: CCTCC NO: M2017368. The enzyme-producing ability of the WENA703 strain is 50 times higher than that of the original starting strain (neutral endo-pectate lyase), and the performance is stable through more than 8 generations of passage. The strain has high enzyme-producing activity and good stability, and its action temperature (15°C-70°C) and action pH value (5.5-9.5) are relatively broad, and can maintain more than 80% of the enzyme activity.

Description

[0001] The present invention relates to the preservation of biological material samples. The classification name of the biological material is: Bacillus cereus WENA703 Bacillus cereus WENA703, which has been preserved in the China Type Culture Collection Center on June 23, 2017, and the address is China. Wuhan. Wuhan University, The deposit number is: CCTCCNO: M2017368. technical field [0002] The invention belongs to the field of biotechnology, in particular to a bacillus cereus (Bacillus cereusWENA703). Background technique [0003] Although waste paper is a renewable resource that can be used to avoid the environmental pollution caused by pulping and alkali recovery, when producing waste paper pulp regardless of the use of natural waste paper and cardboard or white waste paper, it contains various wastes. Impurities will also be discharged into waste water to pollute the environment. The pulping system configured by large-scale waste paper and papermaking enterprises ac...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C12N1/20C12R1/085
CPCC12N1/205C12R2001/085
Inventor 庄冉郝志军周广军
Owner 嘉兴温华环保科技有限公司
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