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Bast fiber pectase degumming method

The technology of bast fiber and degumming method is applied in the field of biological degumming process of bast fiber. Effect of improving fiber dispersibility

Active Publication Date: 2013-01-02
苏州盛泽科技创业园发展有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Therefore, from two aspects of quality control and cost control, the current enzymatic degumming method is difficult to popularize and apply. the puzzle

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0021] A kind of bast fiber pectinase degumming method, it comprises pectinase liquid preparation and following steps:

[0022] (1) pretreatment of bast fiber (the present embodiment is ramie);

[0023] (2) One-time enzymatic degumming: prepare enzyme liquid, control enzyme liquid activity 400u / ml-1000u / ml (this embodiment is 800u / ml), adjust enzyme liquid pH value 7-10 (this embodiment is 8.5), enzyme Liquid is warmed up to 40 ℃-70 ℃ (the present embodiment is 55 ℃), by mass ratio, bast fiber and enzyme liquid ratio are 1: 9-15 (the present embodiment is 1: 12), bast fiber is in this Dip enzyme under condition 2 hours-3 hours (the present embodiment is 2.5 hours);

[0024] (3) Secondary enzymatic degumming: take out the bast fiber obtained in step (2), and fully rinse it with hot water at 50°C-90°C (80°C in this embodiment), and wash off the bast fiber attached Colloid, repeat step (2);

[0025] (4) post-processing.

[0026] In step (1) of the present invention, the bast ...

Embodiment 2

[0029] The preparation of the pectin enzyme liquid of the present invention includes strain selection, strain cultivation, shake flask fermentation and preparation of the enzyme liquid.

[0030] The strain selection is based on methods known in the art, through natural collection of bacterial samples in the soil of the main producing areas of hemp plants such as Hunan, Sichuan, Henan, etc., and one strain is obtained from nearly a hundred strains through shaking flask screening. strains, and at the cell level, nitrosoguanidine and ultraviolet radiation were used to mutagenize nearly ten thousand strains, and a strain with the laboratory number MAPLE21 was obtained after shake flask screening, namely Bacillus cereus (Bacillus cereus), whose biological The chemical characteristics are: the bacteria are rod-shaped, evenly stained, G + , Facultatively aerobic, forming spores, the spores do not protrude from the thallus, the ends of the thallus are relatively flat, and most of them...

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Abstract

The invention discloses a bast fiber pectase degumming method, which comprises preparation of pectase liquid and is characterized by comprising the following steps: (1) pretreatment of bast fiber; (2) primary enzymatic degumming, namely preparing enzyme liquid, controlling the vitality of the enzyme liquid at 400 to 1,000u / ml, adjusting the pH value of the enzyme liquid to between 7 and 10, heating the enzyme liquid to between 40 and 70 DEG C, and soaking the bast fiber into the enzyme liquid for 2 to 3 hours in a mass ratio of the bast fiber to the enzyme liquid of 1: 9-15; (3) secondary enzymatic degumming, namely washing the bast fiber obtained in the step (2) by using hot water at the temperature of between 50 and 90 DEG C to remove colloid from the bast fiber, and repeating the step (2); and (4) post treatment. Compared with a chemical degumming method, the method has the advantages that: the quality of the fiber is obviously improved; the pollution is light and the energy consumption is low; the cost is low, for example, when ramie refined dry flax is produced, the production cost is saved by 1,000 to 1,500 yuan / ton; and meanwhile, the working environment is clean, and the method can be implemented by slightly changing the conventional bast fiber degumming factory.

Description

Technical field: [0001] The invention relates to a biological degumming process of bast fiber, in particular to a pectinase degumming method of bast fiber. Background technique: [0002] The traditional degumming process of bast fiber plants is basically a chemical degumming process based on caustic soda, which uses strong acid and alkali, high temperature and high pressure methods. It has a series of problems such as large pollution, high energy consumption, low production rate, long production cycle, large water consumption, damage to fiber fracture strength, and poor working environment. These problems are the main reasons for the low profit margin of bast fiber plant degumming enterprises . On the other hand, bast fiber phytochemical degumming wastewater has the characteristics of high concentration, high chroma, and high alkalinity. Its composition is complex and contains a large number of substances that are difficult to degrade. It is very difficult to carry out envi...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): D01C1/04C12N9/26C12R1/085
Inventor 李忠兴郝志军高兰平王长明李朝阳
Owner 苏州盛泽科技创业园发展有限公司