International Journal of Industrial Entomology and Biomaterials

Korean Society of Sericultural Science (한국잠사학회)
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Effect of Salts on Gelation Time of Silk Sericin Solution

  • Oh, Hanjin (National Instrumentation Center for Environmental Management, Seoul National University) ;
  • Lee, Ji Young (National Instrumentation Center for Environmental Management, Seoul National University) ;
  • Lee, Ki Hoon (Department of Biosystems & Biomaterials Science and Engineering, Seoul National University)
  • Received : 2013.12.08
  • Accepted : 2013.12.17
  • Published : 2013.12.31
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Abstract

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 $CaCl_2$. The addition of salts delayed the gelation time, and $CaCl_2$ 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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References

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