@Article{jrm.2020.07725,
AUTHOR = {Abdelghani Hassainia, Hamid Satha, Boufi Sami},
TITLE = {Two Routes to Produce Chitosan from <i>Agaricus bisporus</i>},
JOURNAL = {Journal of Renewable Materials},
VOLUME = {8},
YEAR = {2020},
NUMBER = {1},
PAGES = {101--111},
URL = {http://www.techscience.com/jrm/v8n1/38260},
ISSN = {2164-6341},
ABSTRACT = {Two methods were used to produce chitosan by deacetylation of chitin
which was extracted from <i>Agaricus bisporus</i> stipes. The first one gives chitosan 1
with low yield of 2.5%, degree of acetylation (DA) of 4%, molecular weight
(MW) of 2.973 × 10<sup>5</sup> (g/mol). The second route produces chitosan 2 with higher
yield of 41%, degree of acetylation (DA) of 17.23%, molecular weight (MW) of
2.939 × 10<sup>5</sup> (g/mol). Both chitosans were characterized by XRD, FTIR, <sup>1</sup>
H-NMR
spectroscopy nuclear magnetic resonance of proton. The molecular weight (M<sub>W</sub>)
was determined by size exclusion chromatography (SEC). Thermal analysis
shows that both chitosans have moisture content lower than 10%. However chitosan 2 has the less ash % which is the quality grade for chitosan medical applications. Accordingly, fungal chitosan 2 could have potential medical and
agricultural applications.},
DOI = {10.32604/jrm.2020.07725}
}