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Citation: ZHU Jun-Feng, ZHANG Guang-Hua, LI Nan, GAO Jian-Cai. Dry Preparation Process of Carboxymethyl-β-cyclodextrin[J]. Chinese Journal of Applied Chemistry, ;2008, 25(6): 681-684. shu

Dry Preparation Process of Carboxymethyl-β-cyclodextrin

1.
a School of Chemistry and Chemical Engineering, Shaanxi University of Science & Technology, Xi'an 710021;
2.
b Shaanxi Key Laboratory of additives of Industry, Xi'an

Corresponding author: ZHU Jun-Feng,
Received Date: 24 June 2007
Available Online: 20 September 2007
Fund Project: 陕西省咸阳市科技局计划项目(XK06012-9) (XK06012-9)陕西科技大学自然科学项目(ZX06-10)资助 (ZX06-10)

Carboxymethyl-β-cyclodextrin (CM-β-CD) was separately prepared by dry process and wet process.CM-β-CD was characterized by Fourier transform infrared spectrometry (FTIR),and then its solubi-lity,degree of substitution,reaction energy and yield were determined.The results show that reaction effect of dry process is from 37% to 46%,while yield of about 83%.The dry process has a higher reaction energy and a higher yield than the wet process.The optimum conditions of the dry preparation are the mole ratio of chloroacetic acid to β-cyclodextrin is 6,reaction temperature is 40℃,reaction time is 4 h.
- carboxymethyl-β-cyclodextrin,
- dry process,
- wet process,
- degree of substitution
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