Degumming process for mulberry fibre by bacilli compound bacteria

A technology of complex flora and mulberry fiber, applied in the direction of microbial-based methods, bacteria, bacterial retting, etc., can solve the problems of not conforming to the harmonious development of ecological protection, chemical degumming method, high energy consumption, low fiber output rate, etc. , to achieve good degumming effect, mild degumming conditions and low residual glue rate

Inactive Publication Date: 2008-10-15
GUANGXI UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The chemical degumming method consumes a lot of energy, the output rate of the fiber is low, and there are many short fibers, which will cause damage to the fiber surfac

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0023] 1. Enrichment medium composition (w / v): 5% dry mulberry bark, 0.5% (NH 4 ) 2 SO 4 .

[0024] Screening method: Collect soil samples from biogas pond mud, pond bottom mud, woods, banana fields and other places rich in pectin, place them in enriched medium, culture statically at 37°C and pH 8.0, observe the release of fibers and Measure the content of pectinase, xylanase and ligninase in the culture medium, select the culture with the best degumming effect and high enzyme content, take 50ml of the culture medium, transfer it to 450ml of new enrichment medium, and keep at 37°C Static culture, after 5 times of enrichment, the bacterial complex flora with good degumming effect was obtained.

[0025] 2. Cultivation of degummed bacterial complex flora

[0026] Composition (w / v) of the culture medium: pectin 0.5%, urea 0.2%.

[0027] Cultivation process conditions: Inoculate the screened degummed bacterial complex flora into the degummed bacterial complex flora culture sol...

Embodiment 2

[0035] 1. Screening of degummed bacterial complex flora

[0036] The same method as in Example 1 was used for enrichment and screening.

[0037] 2. Cultivation of degummed bacterial complex flora

[0038] Composition of culture medium (w / v): 0.5% xylan, 0.5% KNO 3 .

[0039] Cultivation process conditions: the screened degummed bacterial complex flora is inoculated into the degummed bacterial complex flora culture solution, and cultured at 35° C. and pH 7.0 for 48 hours to obtain the degummed bacterial complex flora seed liquid.

[0040] 3. Degumming

[0041] Composition of degumming solution (w / v): 0.5% (NH 4 ) 2 SO 4 solution.

[0042] Degumming process: add the degumming solution in the dry mulberry bark by dry mulberry bark: the ratio of degumming solution is 1: 25, insert the degummed bacterial complex flora seed solution cultivated by the inoculation amount of 15% (v / v), 40 ℃, pH8.0 soaking for 48 hours for degumming.

[0043] 4. Rinsing and drying process

[0...

Embodiment 3

[0047] 1. Screening of degummed bacterial complex flora

[0048] The same method as in Example 1 was used for enrichment and screening.

[0049] 2. Cultivation of degummed bacterial complex flora

[0050] Composition (w / v) of the culture solution: xylose 0.2%, urea 0.5%.

[0051] Cultivation process conditions: Inoculate the screened degummed bacterial complex flora into the degummed bacterial complex flora culture solution, and cultivate at 35° C. and pH 7.5 for 36 hours to obtain the degummed bacterial complex flora seed culture solution.

[0052] 3. Degumming

[0053] Degumming solution composition (w / v): 0.2% urea solution.

[0054] Degumming process: Add the degumming solution to the dry mulberry bark according to the ratio of dry mulberry bark: degumming solution is 1:30, insert the degumming bacterial complex flora seed solution according to the inoculation amount of 15% (v / v), 35 ° C, pH8 .5 Soak for 60 hours for degumming.

[0055] 4. Rinsing and drying process

...

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Abstract

The invention provides a method for degumming mulberry fiber with bacteria complex flora. The method uses mulberry as a culture medium for a carbon source to filter the bacteria complex flora with good degumming effect to the mulberry from sludge of a methane tank, substrate sludge of a pool, wood, banana land and other samples, has dried mulberry directly immersed into degumming liquid, and inoculates the cultured degumming complex bacterial flora into the degumming liquid for degumming, so that loose mulberry fiber can be obtained via water rinsing and drying. The method has the advantages of mild process condition and simple operation, need not use strong acid or strong alkali, has the manufacturing cost greatly reduced compared with a chemical degumming method, has lower environmental pollution, less cull in the prepared mulberry fiber and white and loose fiber.

Description

1. Technical field [0001] The invention belongs to a method for degumming mulberry fiber, in particular to a method for degumming mulberry fiber with bacterial complex flora. 2. Technical background [0002] my country is the world's most important country for planting mulberry and sericulture. In 2005, the area of ​​mulberry gardens in the country was 11.653 million mu, in 2006 it was 12.59 million mu, and in 2007 it was 14.4099 million mu. The mulberry leaves are used to raise silkworms, while the annual felled A large number of branches have not been well utilized so far. The mulberry fiber contained in mulberry bark not only has the characteristics of cotton, but also has many advantages of hemp fiber. Mulberry fiber has excellent hygroscopicity, air permeability, warmth retention and certain health care effects. It has good luster, soft hand feeling and is easy to dye. It is a pure natural green fiber with high added value. The development of natural mulberry fiber as ...

Claims

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Application Information

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IPC IPC(8): D01C1/04C12N1/20C12R1/01
Inventor 庞宗文梁静娟卢珍兰
Owner GUANGXI UNIV
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