食品科学 ›› 2009, Vol. 30 ›› Issue (12): 98-100.doi: 10.7506/spkx1002-6630-200912017

• 工艺技术 • 上一篇    下一篇

羧甲基-β-环糊精的制备工艺研究

王 瑾,陈均志   

  1. 陕西科技大学化学与化工学院
  • 收稿日期:2008-09-27 修回日期:2009-01-08 出版日期:2009-06-15 发布日期:2010-12-29
  • 通讯作者: 王瑾 E-mail:wangjin_rose@126.com

Preparation of Carboxymethyl- β-cyclodextrin

WANG Jin,CHEN Jun-zhi   

  1. (College of Chemistry and Chemical Engineering, Shaanxi University of Science and Technology, Xi’an 710021, China)
  • Received:2008-09-27 Revised:2009-01-08 Online:2009-06-15 Published:2010-12-29
  • Contact: WANG Jin, E-mail:wangjin_rose@126.com

摘要:

以β- 环糊精及一氯乙酸为原料,通过亲核取代反应在碱性介质中制备羧甲基- β- 环糊精。研究反应温度、反应时间和反应物料配比对羧甲基- β- 环糊精取代度及产率的影响。结果表明,反应物ClCH2COOH 与β-CD 物质的量配比为8.5:1,NaOH 与ClCH2COOH 物质的量配比为2.5:1,在60℃下反应4h,可得到取代度为6.06 产率为46% 的羧甲基- β- 环糊精。

关键词: 羧甲基-β-环糊精, 取代度, 制备

Abstract:

Carboxymethyl-β-cyclodextrin (CM-β-CD) was prepared in alkaline media by nucleophilic substitution reaction of β-CD and monochloroacetic acid. Influences of reaction temperature, reaction duration and reactant ratio on substitution degree and yield of CM-β-CD were discussed. Under optimized reaction conditions (reacting for 4 h at 60 ℃ and the molar ratios of monochloroacetic acid to β-CD and sodium hydroxide to monochloroacetic acid of 8.5:1 and 2.5:1, respectively), a substitution degree of 6.06 and a yield of 46% were achieved.

Key words: carboxymethyl- β-cyclodextrin, degree of substitution, preparation

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