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Effect of Lyoprotectant on the Solubility and Structure of Silk Sericin
김무곤,이기훈,곽효원,이정연,윤해성,김민화 한국잠사학회 2012 International Journal of Industrial Entomology Vol.25 No.1
To increase the solubility of lyophilized sericin, we added three types of lyoprotectant: sucrose, trehalose and dextran. The addition of lyoprotectant increased the solubility of lyophilized sericin especially when 1.0% of sucrose, 1.0% and 1.5% trehalose are added. The secondary structure of lyophilized sericin showed that the content of β-sheet or aggregated structure reduced in the presence of lyoprotectant. The morphology of lyophilized was also affected by the addition of lyoprotectant. Whereas flake structure was obtained in the case of pure sericin, a scattered and relatively small flake structure was formed in the presence of lyoprotectant. These finding shows that the presence of lyoprotectant prevents aggregation of sericin molecules and increases the solubility of lyophilized sericin.