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Antifungal property of quaternized chitosan and its derivatives.

Abstract：

:Five water-soluble chitosan derivatives were carried out by quaternizing either iodomethane or N-(3-chloro-2-hydroxypropyl) trimethylammonium chloride (Quat188) as a quaternizing agent under basic condition. The degree of quaternization (DQ) ranged between 28±2% and 90±2%. The antifungal activity was evaluated by using disc diffusion method, minimum inhibitory concentration (MIC) and minimum fungicidal concentration (MFC) methods against Trichophyton rubrum (T. rubrum), Trichophyton mentagrophyte (T. mentagrophyte), and Microsporum gypseum (M. gypseum) at pH 7.2. All quaternized chitosans and its derivatives showed more effective against T. rubrum than M. gypseum and T. mentagrophyte. The MIC and MFC values were found to range between 125-1000 μg/mL and 500-4000 μg/mL, respectively against all fungi. Our results indicated that the quaternized N-(4-N,N-dimethylaminocinnamyl) chitosan chloride showed highest antifungal activity against T. rubrum and M. gypseum compared to other quaternized chitosan derivatives. The antifungal activity tended to increase with an increase in molecular weight, degree of quaternization and hydrophobic moiety against T. rubrum. However, the antifungal activity was depended on type of fungal as well as chemical structure of the quaternized chitosan derivatives.

journal_name

Int J Biol Macromol

journal_title

International journal of biological macromolecules

authors

Sajomsang W,Gonil P,Saesoo S,Ovatlarnporn C

doi

10.1016/j.ijbiomac.2011.11.004

subject

Has Abstract

pub_date

2012-01-01 00:00:00

pages

263-9

issue

1

eissn

0141-8130

issn

1879-0003

pii

S0141-8130(11)00421-1

journal_volume

50

pub_type

杂志文章

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