Optimization conversion of chitosan from Ganoderma lucidum spore powder using ultrasound‐assisted deacetylation: Influence of processing parameters

摘要

Chitosan is an extremely valuable polysaccharide and usually obtained from crustaceanbyproduct. In this work, a new non‐animal source chitosan is obtained fromfungal precursors (Ganoderma lucidum spore powders, GLSP) using ultrasound‐assisteddeacetylation (USAD), and the effects of processing parameters (irradiationtime, solid‐to‐liquid ratio, NaOH concentration, and irradiation power) on the DD(degree of deacetylation) of chitosan were investigated. The highest DD value wasobtained at irradiation parameters of 20 min, 10% (g:ml) NaOH, 1:25 (g:ml), and80 W. In addition, the difference in surface morphology, chemical groups, thermalstability, and crystallinity of the resulting chitosan with the treatment of various irradiationtimes was examined using the SEM, FTIR, TG, and XRD. The results showa new promising herbal source of edible chitosan and the potential material for biomedicalapplications.Practical applicationsThe chitosan obtained from Ganoderma lucidum spore powders (GLSP) possessedmany priorities over the chitosan from shells of crustaceans, which involves a multifacetedprocedure with several economical and consumer related aspects. In thecurrent work, chitosan is obtained from an herbal source GLSP using ultrasoundtreatment and the effect of processing parameters on chitosan was investigated. Thefindings show the development of chitosan from an herbal source with potential infunctional food applications.