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Progress of Study on the Utilization of Silk Sericin Protein

Chen Hua, Zhu Liangjun, Min Sijia (College of Animal Sciences, Zhejiang University, Hangzhou, 310029) Hu Guoliang (Zhejiang Engineering Institute, Hangzhou, 310033)  
Sericin, a kind of global protein, can be produced either from waste cocoon and waste silk by the processing of degumming, condensing, and drying, or from the wastewater drained by the producers of silk yarn and silk fabrics. Sericin consists of random coil and β structure,in which the former is the main part. The content of amino acids which have polar side chains is as high as 74.61%. Sericin has fine properties of moisture absorption and desorption, antioxidant action, nutrition, and health protection, so it can be used as coating material for synthetic fiber, additive for cosmetic and foodstuff, and exploited as medicine and medical material, support for immobilized enzyme, additive for macromolecular material and cement slurry. It is of great significance to recover and reuse the sericin contained in the wastewater from the angle of protecting environment and increasing profit.
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