Paper Title:
Ultrasonic-Assisted Preparation, Characterization and Antibacterial Activity of β-Chitosan from Squid Pens
  Abstract

β-chitosan preparation from squid pens was carried out using aqueous NaOH with the ultrasonic assistance. Single factor experiments and L9 (34) orthogonal experiments were used to investigate the effect of three parameters (reaction time, concentration of NaOH and reaction temperature) on deacetylation of β-chitin. The optimal conditions for deacetylation of chitin were reaction temperature 80°C, reaction time 2 h and concentration of NaOH 50%. The optimal conditions allowed deacetylation degree of β-chitin from 71.32% to 92.91%. The β-chitosan from squid pens was confirmed by Fourier transform infrared spectroscopy. The antibacterial activities of the prepared β-chitosans again staphylococcus aureus (S. aureus) and Escherchia coli (E.coli) were then determined and compared by the MIC (minimum inhibitory concentration). Results indicate that β-chitosans with different degrees of deacetylation (DD) possess different antibacterial activity. The growth of S. aureus can be easily inhibited by prepared β-chitosan than E.coli.

  Info
Periodical
Advanced Materials Research (Volumes 236-238)
Edited by
Zhong Cao, Yinghe He, Lixian Sun and Xueqiang Cao
Pages
282-287
DOI
10.4028/www.scientific.net/AMR.236-238.282
Citation
J. Huang, J. W. Mao, S. Hu, D. K. Zhao, L. H. Mei, S. W. Liu, Y. F. Wu, S. Fang, Q. Shao, "Ultrasonic-Assisted Preparation, Characterization and Antibacterial Activity of β-Chitosan from Squid Pens", Advanced Materials Research, Vols. 236-238, pp. 282-287, 2011
Online since
May 2011
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$32.00
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