Antimicrobial textile treated with chitosan from Aspergillus niger mycelial waste

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• 作者：Ahmed A. Tayel^a ; ^{tayel_ahmad@yahoo.com"" rel=""nofollow} ; Shaaban H. Moussa^a ; Wael F. El-Tras^b ; Nihal M. Elguindy^c ; Klaus Opwis^d
• 关键词：Antibacterial action ; Citric acid bio-waste ; Cotton fabric ; Finishing ; Fungal chitosan ; Textile topography
• 刊名：International Journal of Biological Macromolecules
• 出版年：2011
• 出版时间：1 August 2011
• 年：2011
• 卷：49
• 期：2
• 页码：241-245
• 全文大小：684 K

文摘

The waste biomass of Aspergillus niger, following citric acid production, was used as a source for fungal chitosan extraction. The produced chitosan was characterized with deacetylation degree of 89.6 % , a molecular weight of 25,000 dalton, 97 % solubility in 1 % acetic acid solution and comparable FT-IR spectra to standard shrimp chitosan. Fungal chitosan was applied as a cotton fabric finishing agent using pad-dry-cure method. The topographical structure of chitosan-treated fabrics (CTF) was much improved compared with control fabrics. CTF, after durability tests, exhibited a powerful antimicrobial activity against both E. coli and Candida albicans, the captured micrographs for E. coli cells contacted with CTF showed a complete lysis of cell walls with the prolonging contact time. The produced antimicrobial CTF could be proposed as a suitable material for many medical and hygienic applications.