Synthesis and characterization of quaternized β-chitin

被引：24

作者：

Chen, Qunying ^{[1
]}

Wu, Yiguang ^{[1
]}

Pu, Yitao ^{[1
]}

Zheng, Zongkun ^{[1
]}

Shi, Chunzhi ^{[1
]}

Huang, Xinzheng ^{[1
]}

机构：

[1] Shenzhen Univ, Fac Chem & Chem Engn, Shenzhen 518060, Peoples R China

来源：

CARBOHYDRATE RESEARCH | 2010年 / 345卷 / 11期

关键词：

beta-Chitin; 3-Chloro-2-hydroxypropyltrimethylammoniumchloride; 2 '-O-Hydroxypropyltrimethylammoniumchitin chloride; Degree of substitution (DS); TRIMETHYL AMMONIUM-CHLORIDE; ANTIMICROBIAL ACTIVITY; CHITOSAN CHLORIDE; MOLECULAR-WEIGHT; STARCH; FIBER;

D O I：

10.1016/j.carres.2010.05.014

中图分类号：

Q5 [生物化学]; Q7 [分子生物学];

学科分类号：

071010 ; 081704 ;

摘要：

Water-soluble 2'-O-hydroxypropyltrimethylammoniumchitin chloride (2'-O-HTACCt) was prepared directly from p-chitin and 3-chloro-2-hydroxypropyltrimethylammonium chloride (CTA) in basic medium. The effect of alkali concentration, reaction temperature, reaction time, and dosage of CTA on yield and degree of substitution (DS) of 2'-O-HTACCt were studied. These quaternized chitin derivatives were characterized by FTIR and H-1 NMR spectroscopy, conductometric titration, and elemental analysis methods. Research results indicate that beta-chitin can react directly with CTA to produce a water-soluble 2'-O-HTACCt derivative with a high DS. The optimal preparation conditions were determined to be 3540 wt % (aq NaOH), 40 degrees C (reaction temperature), 6 h (reaction time), and 4 (molar ratio of CTA to beta-chitin unit). (C) 2010 Elsevier Ltd. All rights reserved.

引用

页码：1609 / 1612

页数：4

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