Please use this identifier to cite or link to this item: http://repositorio.unicamp.br/jspui/handle/REPOSIP/27564
Type: Artigo de periódico
Title: Growth rate inhibition of phytopathogenic fungi by characterized chitosans
Author: Oliveira Junior, Enio N.
Gueddari, Nour E. El
Moerschbacher, Bruno. M.
Franco, Telma T.
Abstract: The inhibitory effects of fifteen chitosans with different degrees of polymerization (DP) and different degrees of acetylation (F A) on the growth rates (GR) of four phytopathogenic fungi (Alternaria alternata, Botrytis cinerea, Penicillium expansum, and Rhizopus stolonifer) were examined using a 96-well microtiter plate and a microplate reader. The minimum inhibitory concentrations (MICs) of the chitosans ranged from 100 µg × mL-1 to 1,000 µg × mL-1 depending on the fungus tested and the DP and F A of the chitosan. The antifungal activity of the chitosans increased with decreasing F A. Chitosans with low F A and high DP showed the highest inhibitory activity against all four fungi. P. expansum and B. cinerea were relatively less susceptible while A. alternata and R. stolonifer were relatively more sensitive to the chitosan polymers. Scanning electron microscopy of fungi grown on culture media amended with chitosan revealed morphological changes.
Subject: chitosan
antifungal activity
fungal morphology
phytopathogenic fungi
Editor: Sociedade Brasileira de Microbiologia
Rights: aberto
Identifier DOI: 10.1590/S1517-83822012000200046
Address: http://dx.doi.org/10.1590/S1517-83822012000200046
http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1517-83822012000200046
Date Issue: 1-Jun-2012
Appears in Collections:Artigos e Materiais de Revistas Científicas - Unicamp

Files in This Item:
File Description SizeFormat 
S1517-83822012000200046.pdf465.25 kBAdobe PDFView/Open


Items in DSpace are protected by copyright, with all rights reserved, unless otherwise indicated.