Microbial strain and its application in degumming of cocoon silk

Abstract

The invention discloses a microbial aeromonas strain which can be used for degumming of cocoon silk. The Latin name of the strain is Aeromonas sp.TJ-5, the strain is preserved in the China center for type culture collection on April 14 in 2017, the preservation number is CCTCC NO:M2017192, and the strain is screened from cocoon silk corrosive liquid. The invention further provides an application method that the strain is directly applied to raw cocoon silk materials to effectively remove sericin in the cocoon silk. Through degumming microorganism preparation, cocoon silk degumming by using degumming microorganisms, water washing and drying steps, sericin in the cocoon silk is effectively removed, the use of chemical materials in the degumming process of silk spinning raw materials can be further reduced, the working environment is improved, and the environment pollution is reduced.

Description

technical field [0001] The invention relates to a microbial strain and its application field, in particular to an Aeromonas strain and the application of the strain in cocoon silk degumming. Background technique [0002] China is the world's largest silk country, with an annual silk production of about 100,000-150,000 tons. Usually, every ton of raw silk produced will have about 14-20% cocoon silk wastes such as defective cocoons, waste silk, stagnant ends, reeling residues, etc. to become raw materials for silk spinning. In addition to sericin and grease, these leftovers also have other pollutants and impurities attached to them. Most of the sericin, grease, wax, etc. must be removed through refining and finishing. [0003] At present, the scouring method of silk spinning raw materials commonly used in China is the chemical method or the scouring method combined with chemical-corrosion method. It is characterized by high chemical refining efficiency and low production cos...

AI Technical Summary

Problems solved by technology

It is characterized by high chemical refining efficiency and low production cost, but due to the use of a large amount of alkali and other chemical raw materials, the fiber damage is greater and the environment is seriously polluted; corrosion refining is generally carried out through chemical refining first, and then the raw materials are treated with microbial soaking liquid. Corrosion (fermentation) treatment is carried out to remove part of the sericin and grease, and then the raw materials are processed to meet the process requirements by chemical refining (re-training)

Corrosion refining has a good degreasing effect, relatively speaking, the amount of chemical materials used is less than the former, but this process has problems such as long production cycle, unstable product quality, environmental pollution caused by corrosion odor, and poor working environment.

In recent years, enzymatic degumming has also been used, which has the advantages of mild action and environmental protection, but the cost of enzyme refining is high, and there are few types of enzyme preparations, so it has not been widely used yet.

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