Taxonomic group: fungi / Ascomycota, Mucoromycota
(Phylum: Ascomycota, Mucoromycota)
Organ / tissue: cell wall
The structure was elucidated in this paperJournal NLM ID: 101167764Publisher: New Delhi: National Institute of Science Communication & Information Resources
Correspondence: siva
nitc.ac.in
Institutions: Department of Chemical Engineering, National Institute of Technology, Calicut, India
Chitosan is a natural polysaccharide comprising copolymer of glucosamine and N-acetyl glucosamine, and can be obtained by the deacetylation of chitin. Due to its biodegradability, biocompatibility and low toxicity, chitosan has received increased attention as one of the promising renewable polymeric materials for its various applications in the bioremediation, pharmaceutical, chemical and biomedical industries. In the present study, chitosan was extracted from cell walls of Aspergillus niger and Rhizopus oryzae, and characterized for mol wt, viscosity and degree of deacetylation. Further, effect of metal concentration, pH and contact time on the adsorption of heavy metals from aqueous solutions by extracted-chitosan was studied. The sorption properties were also compared using live biomass and the chitosan from A. niger and R. oryzae. It has been found that A. niger gave good yield and the extracted chitosan also had high sorption capacity compared to the chitosan derived from R. oryzae. The maximum adsorption capacity for copper (79.65%) and chromium (87.61%) was obtained using A. niger at optimized conditions. Fourier transform infrared (FT-IR) analysis indicated that hydroxyl and amine groups of chitosan structure were involved in the mechanism of copper and chromium adsorption.
copper, chitosan, Aspergillus niger, chromium, Rhizopus oryzae
Structure type: homopolymer
Location inside paper: abstract
Trivial name: chitosan
Compound class: O-polysaccharide, cell wall polysaccharide, glucan, polysaccharide
Contained glycoepitopes: IEDB_137340,IEDB_141807,IEDB_151531
Methods: FTIR, biosorption studies
Biological activity: high efficiency of Cu and Cr sorption
Comments, role: Chitosan yield in case of A. niger was higer than in case of R. oryzae; copper and chromium recovery was recorded higher in A. niger compared to R. oryzae
Related record ID(s): 42507, 49502, 49512, 49524, 49653, 50016, 50301, 50303, 50304, 50307, 50308, 50310, 50311, 50314, 50315, 50317, 50319, 50320
NCBI Taxonomy refs (TaxIDs): 5061,
64495Reference(s) to other database(s): GTC:G82804CF
Show glycosyltransferases
There is only one chemically distinct structure:
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