Preparation of chitosan oligomers by irradiation

被引：175

作者：

Choi, WS

Ahn, KJ

Lee, DW

Byun, MW

Park, HJ ^{[1
]}

机构：

[1] Korea Univ, Grad Sch Biotechnol, Seoul 136701, South Korea

[2] Chungju Natl Univ, Dept Food Sci & Technol, Chungju 380702, Chung Buk, South Korea

[3] Korea Atom Energy Res Inst, Taejon 305353, South Korea

[4] Clemson Univ, Dept Packaging Sci, Clemson, SC 29634 USA

来源：

POLYMER DEGRADATION AND STABILITY | 2002年 / 78卷 / 03期

关键词：

chitosan; irradiation; viscosity; color; chitooligosaccharide;

D O I：

10.1016/S0141-3910(02)00226-4

中图分类号：

O63 [高分子化学（高聚物）];

学科分类号：

070305 ; 080501 ; 081704 ;

摘要：

Chitosans (20 and 100 cp, 2%) were irradiated in acetic acid solution (2%) with different doses (2-200 kGy) of Co-60 gamma rays to investigate the yields of chitosan oligomers. A rapid decrease of viscosity was observed up to 10 kGy and then the viscosity decrease slowed down gradually with increasing irradiation dose. Brown color developed heavily for irradiation dose over 100 kGy. Yields of chitosan dimer, trimer and tetramer were 3.6, 3.0 and 1.8%, respectively, at a dose of 100 kGy in 100 cp chitosan solution. (C) 2002 Elsevier Science Ltd. All rights reserved.

引用

页码：533 / 538

页数：6

共 36 条

[1] PREPARATION OF N-ACETYLCHITOOLIGOSACCHARIDES BY HYDROLYSIS OF CHITOSAN WITH CHITINASE FOLLOWED BY N-ACETYLATION [J].