Preparation of chitosan from <i>Penicillium</i> <span style="mso-bidi-font-style:italic">spp. and determination of their degree of deacetylation </span>

Abstract

231-235Four fungal strains, Penicillium waksmanii, P. aurantiogriseum, P. viridicatum and P. citrinum were investigated for their chitosan production. Their chitosan yields were in the range of 20-30% of the dry wt mycetium. The degree of deacetylation was estimated by analytical method FT-IR; it ranged between 47.3-65.1%. The viscosity of 1% chitosan in 1% acetic acid solution was determined. P. waksmanii showed the highest degree of deacetylation and viscosity