Anti-counterfeiting recognition method of sericin afterfinish product of textiles

An identification method and textile technology, applied in the field of anti-counterfeiting identification, can solve the problems of indistinguishable and difficult to distinguish sericin coating, milk whey protein coating, etc.

Inactive Publication Date: 2009-01-21
SUZHOU UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] However, neither fluorescence analysis nor infrared spectrum analysis can distinguish whether the fabric is finished by sericin or by bone glue or gelatin, because sericin with a molecular weight of 10,000-50,000 Daltons is a water-soluble globular protein. , can be quickly dissolved in cold water, while bone glue and gelatin are insoluble in cold water, but can slowly absorb water and swell in hot water, and gradually dissolve. It can be seen that although the types of amino acids contained in these proteins are roughly the same, the quality of their characteristic amino acids There is a large difference in percentage, and it is difficult to distinguish sericin coating, bone glue coating, gelatin coating or milk whey protein coating from the results of infrared differential method and ultraviolet fluorescence analysis

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0022] A, B, C, and D are four pieces of cotton cloth treated with sericin, milk whey protein, bone glue, and gelatin respectively, and four pieces of A, B, C, and D with a size of 5cm×5cm are cut.

[0023] (1) Detect the amino acid in cloth A pure cotton cloth sericin coating, calculate the relative mass percentage content of aspartic acid and serine:

[0024] Put the cut fabric A into the hydrolysis tube, add 15ml of 6mol / L hydrochloric acid into the hydrolysis tube, add 3 to 4 drops of newly distilled phenol, then put the hydrolysis tube into the refrigerant, freeze for 3 minutes to 5 minutes, and then connect it to the vacuum pump Vacuumize (nearly 0 Pa) on the suction pipe of the pump, and then fill with high-purity nitrogen; then vacuumize and fill with nitrogen, repeat three times, seal or tighten the screw cap under the state of nitrogen filling, and place the sealed hydrolysis tube at 110±1 In a constant temperature drying oven at 100°C, after hydrolysis for 22 hours,...

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Abstract

The invention discloses a method for identifying the false proof of sericin finishing products of fabric, which is characterized in that the method comprises analyzing the content of amino acid on the coating layers of fabric, calculating the percentage between the mass sum of aspartate and serine and the total mass of aspartate and serine and the percentage between the mass of amino acid with a polarized lateral group and the total mass of amino acid, and judging that the coating layers on fabric are sericin coating layers when the percentage content sum of aspartate and serine is bigger than and is equal to 42% and the percentage content sum of amino acid with a polarized lateral group is bigger than 70%. Since the analytic technique of amino acid content in food analysis is utilized, the mass percentage content of aspartate and serine and the mass percentage content of amino acid with a polarized lateral group are particularly analyzed, the method can accurately judge whether the coating layers are sericin or not.

Description

technical field [0001] The invention relates to an anti-counterfeiting identification method for sericin post-finishing products of textiles. Background technique [0002] The main body of silk fiber is silk fibroin, and sericin is wrapped around the silk fibroin. Sericin plays a protective and adhesive role on silk fibroin, and it can prevent damage to silk fibers due to weaving friction. Therefore, silk fabrics must be dyed, The sericin is completely removed during finishing. In the refining liquid sewage of silk dyeing factories, there is a very high concentration of sericin. The sewage discharged from the cocoon cooking and silk reeling workshops of the silk reeling factory also contains a large amount of sericin. Due to the high concentration of sericin in the discharged sewage, the dissolved oxygen in the water will be consumed when it flows into the river, thus damaging the ecological environment. [0003] With the research on the structure and performance of serici...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01N33/36G01N33/48G01N21/78
Inventor 邢铁玲盛家镛陈国强
Owner SUZHOU UNIV
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