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Citation: ZHOU Xiao-Hua, LI Fen, XIAN Xiao-Hong. Preparation of Crosslinked Silkworm Chitosan-Glutamic Acid Cation Exchange Resin[J]. Chinese Journal of Applied Chemistry, ;2005, 22(2): 152-157. shu

Preparation of Crosslinked Silkworm Chitosan-Glutamic Acid Cation Exchange Resin

1.
College of Chemical Engineering, Chongqing University, Chongqing 400044

Corresponding author: ZHOU Xiao-Hua,
Received Date: 5 March 2004
Available Online: 30 July 2004

Glutaldelyde-crosslinked silkworn chitosan-glutamic acid cation exchange resin was prepared, and its exchange capacity for each of L-lysine, L-citrulline and Zn²⁺ has been examined. The optimum conditions for the exhange resin preparation are that the mass ratio of chitosan to glutamic acid is 1:0.75, reaction time is 4 h, temperature is at 30℃. The resin is nearly a porous round granula with stacking density of 0.413 g/mL, mass loss ratio 0.66%, water content 85.79% and swelling degree 72.73%. The dynamic exchange capacities of the resin for lysine, citrulline and Zn²⁺ are 188, 191 and 421.5 mg/g, based on dry resin, respec-tively.
- silkworm,
- chitosan,
- L-glutamic acid,
- cation exchange resin
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