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Hydrolysis characteristics and applications of silk sericin II. Characteristics of soluble sericin and its application on human skin  

김정호 (경북대학교 천연섬유학과)
배도규 (경북대학교 천연섬유학과)
Publication Information
Journal of Sericultural and Entomological Science / v.45, no.1, 2003 , pp. 58-65 More about this Journal
Abstract
This study was carried out to investigate the characteristics of the soluble sericins after degumming and after hydrolysis of insoluble sericin with various enzymes. Physical and chemical characteristics of the soluble sericins were also studied and pack test was conducted. Electro donating ability of the various sericins became higher as high>low>KP>PP>PA. In FT-IR analysis, the band of insoluble sericin at 3,285cm$\^$-1/ was shifted to the lower wavelengths in soluble sericins. The intensity of the amide II band was reduced and shifted to lower wavelengths as a result of hydrolysis. In DSC analysis, all sericins showed endothermic peaks around 200$^{\circ}C$ and insoluble sericin showed another peak at 250$^{\circ}C$. The endothermic peak of the insoluble sericin was found at higher temperature compared with those of the soluble sericins which showed at 300$^{\circ}C$. Whiteness of the various sericins became higher as low>high>PP>PA>PK>IN and yellowness were PK>PA>PP>low>high. In pack test, the skin packed with the non-woven fabric treated with the various sericins was more smooth and less oily.
Keywords
Sericin; Electro donating abilities; Pack test;
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