Anti-counterfeiting recognition method of sericin afterfinish product of textiles

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...

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