Screening of fungi for chitosan producers, and copper adsorption capacity of fungal chitosan and chitosanaceous materials

Ke Jin Hu, Jinlian Hu, Kwok Ping Ho, Kwok Wing Yeung

Research output: Journal article publicationJournal articleAcademic researchpeer-review

46 Citations (Scopus)

Abstract

Thirty-three fungal strains were screened for chitosan producers. Although chitosan is believed to occur only in Mucorales strains in the class of Zygomycetes, we found that chitosan was extractable from all the 33 strains from the four classes. High level of chitosan was extractable from some non-zygomycetes strains. Absidia glauca(+) was found to be a promising chitosan producer. High level of chitosan can be extracted from some common industrial fungi, implying that it is feasible to produce chitosan from industrial waste mycelia. Fungal chitosan derived from A. glauca(+) showed the highest adsorption capacity for Cu(II). The order of copper adsorption capacity for these chitinous/chitosanaceous materials is: fungal chitosan > alkali-insoluble materials (AIM) > crustacean chitosan > fungal biomass. The Langmuir and Freundlich constants for the Cu(II) adsorption isotherms were determined with Freundlich model providing a better description of the copper adsorption isotherms.
Original languageEnglish
Pages (from-to)45-52
Number of pages8
JournalCarbohydrate Polymers
Volume58
Issue number1
DOIs
Publication statusPublished - 1 Oct 2004

Keywords

  • Absidia glauca
  • Copper adsorption
  • Fungal alkali-insoluble materials
  • Fungal chitosan
  • Isotherm

ASJC Scopus subject areas

  • Organic Chemistry
  • Polymers and Plastics
  • Materials Chemistry

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