TY - JOUR
T1 - Antifungal effects of chitosan with different molecular weights on in vitro development of Rhizopus stolonifer (Ehrenb.:Fr.) Vuill
AU - Hernández-Lauzardo, A. N.
AU - Bautista-Baños, S.
AU - Velázquez-del Valle, M. G.
AU - Méndez-Montealvo, M. G.
AU - Sánchez-Rivera, M. M.
AU - Bello-Pérez, L. A.
N1 - Funding Information:
We are grateful to the National Polytechnic Institute for financial support and Eng. Patricia Castillo for technical work in SEM and TEM studies.
PY - 2008/9/5
Y1 - 2008/9/5
N2 - Determination of the molecular weight of three types of chitosan was carried out by HPSEC-RI. The effect of low, medium and high molecular weight chitosan was evaluated on development of three isolates of Rhizopus stolonifer. Image analysis and electronic microscopy observations were done in spores of this fungus. Germination of R. stolonifer in potato dextrose broth with chitosan was also evaluated. Results pointed out that the low molecular weight chitosan was more effective for inhibition of mycelial growth while the high molecular weight chitosan affected spore shape, sporulation and germination. Studies of scanning and transmission electron microscopy revealed numerous and deeper ridge ornamentations of the chitosan-treated spore.
AB - Determination of the molecular weight of three types of chitosan was carried out by HPSEC-RI. The effect of low, medium and high molecular weight chitosan was evaluated on development of three isolates of Rhizopus stolonifer. Image analysis and electronic microscopy observations were done in spores of this fungus. Germination of R. stolonifer in potato dextrose broth with chitosan was also evaluated. Results pointed out that the low molecular weight chitosan was more effective for inhibition of mycelial growth while the high molecular weight chitosan affected spore shape, sporulation and germination. Studies of scanning and transmission electron microscopy revealed numerous and deeper ridge ornamentations of the chitosan-treated spore.
KW - Antifungal activity
KW - Chitosan
KW - Image analysis
KW - Spore ornamentations
UR - http://www.scopus.com/inward/record.url?scp=43349087931&partnerID=8YFLogxK
U2 - 10.1016/j.carbpol.2007.12.020
DO - 10.1016/j.carbpol.2007.12.020
M3 - Artículo
C2 - 26048219
SN - 0144-8617
VL - 73
SP - 541
EP - 547
JO - Carbohydrate Polymers
JF - Carbohydrate Polymers
IS - 4
ER -