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Method for degumming from silk spinning raw material and recovering sericin

A sericin and silk spinning technology, applied in the field of sericin extraction, can solve the problems of not being able to obtain high-quality sericin, waste of sericin resources, waste of chemical materials, etc., to achieve low cost, improve efficiency, reduce The effect of pollution

Inactive Publication Date: 2012-07-04
兴化市大地蓝绢纺有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In the production and refining of silk spinning, most of the sericin protein is dissolved in the cooking wastewater by the chemical raw materials added during cooking. If it is discharged without treatment, it will seriously pollute the environment and water bodies.
However, the traditional degumming method of silk spinning not only wastes chemical materials, increases the cost, but also pollutes the environment. The discharge of sericin is a waste of resources. For example, the process of recovering sericin from wastewater containing sericin and chemical raw materials is complicated and costly. High, but can not get high-quality sericin

Method used

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  • Method for degumming from silk spinning raw material and recovering sericin
  • Method for degumming from silk spinning raw material and recovering sericin

Examples

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Effect test

Embodiment 1

[0026] Embodiment 1: a method for degumming and reclaiming sericin from silk spinning raw materials, the method comprises the following steps:

[0027] 1. Cleaning and removing impurities: fully wash and remove impurities from silk spinning raw materials (strips, heads, cocoons, etc.) with water.

[0028] 2. Peel off sericin under high temperature and high pressure; add 8 times water by weight to the silk spinning raw material after cleaning and removing impurities, and directly dissolve the sericin in the silk spinning raw material at a temperature of 170°C, a pressure of 2kgf / cm2, and a time of 60 minutes. Sericin, but the silk fibroin is not dissolved, the material and liquid are separated by heat, and the silk fibroin is discarded for silk spinning and used for another use to obtain a sericin protein solution.

[0029] 3. Cooling enzymatic hydrolysis: Put the sericin solution obtained in step 2 into an enamel reaction kettle to cool down to 45°C-50°C, add trypsin at 1-2‰ o...

Embodiment 2

[0035] Example 2: A method for degumming and recovering sericin from silk spinning raw materials. In step 2 of the method, 9 times the weight of the silk spinning raw materials after cleaning and removing impurities is added, and at a temperature of 165°C and a pressure of 1.8kgf / cm2 , time under the condition of 70 minutes, dissolving the sericin in the silk spinning raw material, the rest is the same as embodiment 1.

Embodiment 3

[0036] Example 3: A method for degumming and recovering sericin from silk spinning raw materials. In step 2 of the method, add 10 times the weight of the silk spinning raw materials after cleaning and removing impurities. , time under the condition of 80 minutes, dissolving the sericin in the silk spinning raw material, the rest is the same as embodiment 1.

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Abstract

The invention discloses a method for degumming from silk spinning raw material and recovering sericin. The method comprises the following steps of: 1. cleaning and removing impurities; 2. peeling sericin at a high temperature and under a high pressure; 3. cooling for enzymatic hydrolysis; 4. inactivating enzyme by heating; 5. concentrating and decolouring; 6. filtering out active carbon; 7. filtering and adsorbing injurants of heavy metal, etc.; 8. drying to obtain a finished product. The method not only can recover sericin with a high purity, but also can reduce costs, increase profits, saveenergy, reduce emission and reduce environment pollution by chemical materials. In addition, the method has simple process flow and low costs, and is suitable for large scale popularization and application.

Description

technical field [0001] The invention relates to a method for extracting sericin from silkworm cocoons, in particular to a method for degumming and recovering sericin from silk spinning raw materials, which is applied to the innovation of silk spinning production refining process to achieve zero pollution discharge of sericin And the effect of recovering high-quality sericin. Background technique [0002] The raw materials of silk spinning are mainly leftovers from silk production (including strip spit, tweezers, cocoon clothes, etc.), these raw materials are mainly composed of silk fibroin, which accounts for 60% to 80%, and the outer covering accounts for 20% to 40%. Sericin and a small amount of waxy and inorganic substances. In the production and refining of silk spinning, most of the sericin is dissolved in the cooking wastewater by the chemical raw materials added during cooking. If it is discharged without treatment, it will seriously pollute the environment and wat...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C12P21/06D01C3/02
Inventor 成庆寿谢天海
Owner 兴化市大地蓝绢纺有限公司