Journal article
Preparation of chitosan oligomers and characterization: their antifungal activities and decay resistance
Holzforschung, Vol.66, pp.119-125
2012
Abstract
Chitosan, a polymer of D-glucosamine, is known for its antimicrobial activity. However, the physicochemical properties of chitosan depend upon three principal factors, i.e., source of raw material, molecular weight and degree of deacetylation. Here, synthesis and characterization of chitosan oligomers is reported, which were prepared by the nitrous acid deaminative depolymerization of chitosan obtained from Sigma Aldrich and China (industrial grade). Subsequently, their antifungal activities were evaluated against selected basidiomycetes. The nutrient medium bioassay results show that chitosans and chitosan oligomers affected mycelial growth to different magnitudes. Nevertheless, two of the low-MW chitosan oligomers completely inhibited the growth of all the tested fungi as compared to high-MW chitosan oligomers. Accordingly, antifungal activity increases by decreasing degree of polymerization of chitosan oligomers, which is divergent to literature data. The wood decay trial confirmed the antifungal activity of chitosan oligomers against basidiomycetes. Chitosan is leachable by water.
Details
- Title
- Preparation of chitosan oligomers and characterization: their antifungal activities and decay resistance
- Authors
- Ibrar Hussain (Corresponding Author) - ScionTripti Singh (Author) - ScionColleen Chittenden (Author) - Scion
- Publication details
- Holzforschung, Vol.66, pp.119-125
- Publisher
- Walter De Gruyter GmbH
- DOI
- 10.1515/HF.2011.130
- ISSN
- 1437-434X
- Organisation Unit
- National Centre for Timber Durability and Design Life
- Language
- English
- Record Identifier
- 99979640202621
- Output Type
- Journal article
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- Web Of Science research areas
- Forestry
- Materials Science, Paper & Wood
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Source: InCites