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Cellulose
Published in: Cellulose 4/2008

01-08-2008

Preparation of novel antimicrobial-modified starch and its adsorption on cellulose fibers: Part I. Optimization of synthetic conditions and antimicrobial activities

Authors: Y. Guan, L. Qian, H. Xiao, A. Zheng

Published in: Cellulose | Issue 4/2008

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Abstract

Antimicrobial-modified starch was synthesized by covalently bonding guanidine polymer (PHGH) with potato starch via coupling reaction. Orthogonal tests were applied to optimize the reaction conditions. The coupling efficiency could reach 90.21% at the optimal conditions: temperature, 70 °C; time, 2 h; PHGH/starch, 120 wt.%; GDE/starch, 8 wt.%; pH, 11. PHGH modified starches exhibited high antimicrobial activities against both E. coli and S. aureus. Shaking flask method was more suitable for current non-released modified starches than diffusion method to evaluate the antimicrobial activities. In the presence of 1.0 wt.% PHGH in wood fibers, the growth inhibition reached almost 100%. The AFM results also demonstrated that the antimicrobial mechanism of PHGH was to destroy the membrane of the cells.
previous article Treatment of oxidized cellulose fabric with chitosan and its surface activity towards anionic reactive dyes
next article Synthesis of a novel antimicrobial-modified starch and its adsorption on cellulose fibers: part II––adsorption behaviors of cationic starch on cellulose fibers

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Metadata
Title
Preparation of novel antimicrobial-modified starch and its adsorption on cellulose fibers: Part I. Optimization of synthetic conditions and antimicrobial activities
Authors
Y. Guan
L. Qian
H. Xiao
A. Zheng
Publication date
01-08-2008
Publisher
Springer Netherlands
Published in
Cellulose / Issue 4/2008
Print ISSN: 0969-0239
Electronic ISSN: 1572-882X
DOI
https://doi.org/10.1007/s10570-008-9208-6

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