Effect of Salts on Gelation Time of Silk Sericin Solution
2013
Oh, H.J., Seoul National University, Seoul, Republic of Korea | Lee, J.Y., Seoul National University, Seoul, Republic of Korea | Lee, K.H., Seoul National University, Seoul, Republic of Korea
Sericin undergoes gelation by the structural transition from random coil to b-sheet transition. In the present study, the gelation time of sericin solution was investigated in the presence of NaCl, KCl and CaCl2. The addition of salts delayed the gelation time, and CaCl2 had the most pronounced effect, which delayed about 8 h at maximum. The gelation time increased with the concentration of salt. The transition of secondary structure of sericin was retarded in the presence of salt. The effect of salts on the gelation time of sericin might be due to the solvation effect of relevant cation
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