Journal
CARBOHYDRATE POLYMERS
Volume 77, Issue 3, Pages 449-456Publisher
ELSEVIER SCI LTD
DOI: 10.1016/j.carbpol.2009.01.015
Keywords
HTCC; Rectorite; Nanocomposite; Antimicrobial activity
Categories
Ask authors/readers for more resources
Rectorite (REC), a type of layered silicate, was used to prepare the intercalated nanocomposites with quaternized chitosan (HTCC). Characterization by XRD and TEM revealed that HTCC were intercalated into the intergallery of REC. Moreover, it was confirmed from FT-IR, XRD and C-potential analyses that interaction between HTCC and REC took place. Two in vitro antimicrobial assays indicated that all the nanocomposites exhibited strong inhibition against Gram-positive bacteria, Gram-negative bacteria and Fungi under weak acid, water and weak basic condition, particularly against Gram-positive bacteria. Moreover, with increasing the amount or the interlayer distance of organic REC, the antimicrobial activity was stronger. The lowest minimum inhibition concentration values of the nanocomposites against Staphylococcus aureus and Bacillus subtilis were less than 0.00313% (w/v) in all media tested, and the killing rate on S. aureus reached more than 90% in 30 min. The mechanism of the antimicrobial action was briefly discussed. (C) 2009 Elsevier Ltd. All rights reserved.
Authors
I am an author on this paper
Click your name to claim this paper and add it to your profile.
Reviews
Recommended
No Data Available