Abstract
Fungi are promising alternative sources of chitosan. This study evaluated the physical properties of fungal chitosan from Absidia coerulea (AF 93105), Mucor rouxii (Ag 92033), and Rhizopus oryzae (Ag 92033). FT-IR and X-ray diffraction of the extracted products showed typical chitosan peak distributions which confirmed the extracted products to be chitosan. All of their glucosamine contents and degrees of deacetylation (DD) were over 80%, not showing obvious differences respectively. However, differences had been observed in their molecular weight (Mw), ranging from 6.6 to 560 kDa. The results of this study demonstrated that different fungi could produce different Mw chitosan with high DD and high purity.
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