Characterization of chitosan and chitin produced from silkworm crysalides

被引：373

作者：

Paulino, Alexandre T. ^{[1
]}

Simionato, Julliana I. ^{[1
]}

Garcia, Juliana C. ^{[1
]}

Nozaki, Jorge ^{[1
]}

机构：

[1] Maringa State Univ, Dept Chem, BR-87020900 Maringa, Parana, Brazil

来源：

CARBOHYDRATE POLYMERS | 2006年 / 64卷 / 01期

关键词：

silkworm; chitin; chitosan; chrysalides; spectroscopy;

D O I：

10.1016/j.carbpol.2005.10.032

中图分类号：

O69 [应用化学];

学科分类号：

081704 ;

摘要：

Chitin, extracted from silkworm chrysalides, was employed for the production of a high purity and porous chitosan, as observed by scanning electron microscopy (SEM). Chitin and chitosan produced were characterized by infrared (FTIR), nuclear magnetic resonance (C-13-NMR) spectroscopy, thermal analysis (TGA), differential scanning calorimetry (DSC), and SEM. Two methods of chitin and chitosan extractions were investigated and compared, and although these were of high purity, the yield of chitin and chitosan were low if compared with the chitin and chitosan produced from crustacean shells. The yield of chitosan production by chitin deacetylation or degree of deacetylation (DD) was an average 83%. The molecular weight (MW) was determined by viscosimetric methods. (c) 2005 Elsevier Ltd. All rights reserved.

引用

页码：98 / 103

页数：6