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Method for producing antibacterial silk through adding nanoparticles

A nanoparticle and food-adding technology, which is applied in the direction of adding food elements, forming or processing animal feed, animal feed, etc., can solve the problem of high mortality of silkworms, and achieve the effect of broad market prospects, simple processing methods, and easy dispersion

Active Publication Date: 2020-07-03
ZHEJIANG SCI-TECH UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, this method has defects such as high mortality of silkworms during feeding

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0030] Embodiment 1, a kind of method that adds food nano particle to produce antibacterial silk, carries out following steps successively:

[0031] 1), preparation of nanoparticle solution

[0032] Amino acid surface-modified nano-CuO particles with a particle diameter of 5-10 nm are added into water to uniformly disperse to form a nano-particle dispersion with a mass concentration of 10.5 g / L.

[0033] 2), preparation of silkworm food containing nanoparticles

[0034] The nanoparticle dispersion was evenly sprayed on the mulberry leaves, so that the fresh weight ratio of the amino acid surface-modified nano-CuO particles to the mulberry leaves was 1:1.2×10 4 ; To obtain mulberry leaves containing nanoparticles.

[0035] 3) Feeding silkworms and camping cocoons

[0036] At the fifth instar of silkworms, mulberry leaves containing nanoparticles were used to start feeding silkworms until the silkworms stopped eating.

[0037] Silkworms spin cocoons to obtain antibacterial s...

Embodiment 2

[0044] Embodiment 2, a kind of method that adds food nano particle to produce antibacterial silk, carries out following steps successively:

[0045] 1), preparation of nanoparticle solution

[0046] Amino acid surface-modified nano-CuO particles with a particle diameter of 30-60nm are added into water to uniformly disperse to form a nano-particle dispersion with a mass concentration of 0.05g / L.

[0047] 2), preparation of silkworm food containing nanoparticles

[0048] The nanoparticle dispersion was evenly sprayed on the mulberry leaves, so that the mass ratio of amino acid surface-modified nano-CuO particles to mulberry leaves was 1:1.5×10 3 .

[0049] 3) Feeding silkworms and camping cocoons

[0050] At the fifth instar stage of silkworms, mulberry leaves containing nanoparticles were used to feed silkworms until the silkworms stopped eating; silkworms began to spin silk and cocoon, and antibacterial silk fibers containing Cu with a mass fraction of 778ppm were obtained....

Embodiment 3

[0054] Embodiment 3, a kind of method that adds food nano particle to produce antibacterial silk, carries out following steps successively:

[0055] 1), preparation of nanoparticle solution

[0056]Amino acid surface-modified nano-CuO particles with a particle diameter of 100-120nm were added into water to uniformly disperse to form a nano-particle dispersion with a mass concentration of 45.5g / L.

[0057] 2), preparation of silkworm food containing nanoparticles

[0058] Spray the nanoparticle dispersion evenly on the mulberry leaves, so that the mass ratio of amino acid surface-modified nano-CuO particles to mulberry leaves is 1:3×10 4 .

[0059] 3) Feeding silkworms and camping cocoons

[0060] At the fifth instar stage of silkworms, mulberry leaves containing nanoparticles were used to feed silkworms until the silkworms stopped eating; silkworms began to spin silk and cocoon, and antibacterial silk fibers containing Cu with a mass fraction of 17ppm were obtained.

[006...

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Abstract

The invention discloses a method for producing antibacterial silk through adding nanoparticles. The method comprises the following steps of evenly spraying a dispersion liquid of amino acid surface-modified nanoparticles on silkworm food, or directly mixing the amino acid surface-modified nanoparticles with the silkworm food evenly to obtain the silkworm food containing nanoparticles; feeding silkworms with the silkworm food containing the nanoparticles from the fifth instar of the silkworms until the silkworms stop eating; and spinning silk and cocooning by the silkworms and obtaining an antibacterial silk fiber containing the amino acid surface-modified nanoparticles. By adopting the method disclosed by the invention, the silk fiber and related products with excellent antibacterial property can be obtained.

Description

technical field [0001] The invention belongs to the field of silk processing and product development, and in particular relates to a method for producing antibacterial silk by adding food nanoparticles. Background technique [0002] With the improvement of living standards, people's demand for differentiated silk products is gradually increasing. Improving silkworm eggs to obtain higher-quality silk raw materials, or finishing silk to obtain functional silk products have always been the focus of research and development. Antibacterial textiles occupy an important position in functional textiles and have a broad market prospect. Antibacterial silk, as a textile material for personal wear, is antibacterial and antipruritic, which is of great significance to the comfort and health of the human body. [0003] At present, the methods used for antibacterial processing of silk and other natural fiber textiles are generally grafting, dip-pad-dry and other methods, which have many ...

Claims

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Application Information

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IPC IPC(8): A01K67/04A23K20/142A23K40/10A23K50/90
CPCA01K67/04A23K20/142A23K40/10A23K50/90
Inventor 马明波周文龙董锁拽潘璐璐
Owner ZHEJIANG SCI-TECH UNIV
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