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International Journal of Medicinal Mushrooms
IF: 1.423 5-Year IF: 1.525 SJR: 0.431 SNIP: 0.716 CiteScore™: 2.6

ISSN Print: 1521-9437
ISSN Online: 1940-4344

International Journal of Medicinal Mushrooms

DOI: 10.1615/IntJMedMushrooms.v18.i6.50
pages 509-519

Extraction of Fungal Polysaccharides from Solid-State Cultivated Mycelia of the Turkey Tail Medicinal Mushroom, Trametes versicolor (Agaricomycetes)

Jan Rakus
Department of Chemical, Biochemical and Environmental Engineering, Faculty of Chemistry and Chemical Technology, University of Ljubljana, Ljubljana, Slovenia
Marin BEROVIC
Prof.Dr.Bioche.Eng.
Janvit Golob
Department of Chemical, Biochemical and Environmental Engineering, Faculty of Chemistry and Chemical Technology, University of Ljubljana, Ljubljana, Slovenia

ABSTRACT

Polysaccharides (PSs) were extracted from the biomass of the turkey tail medicinal mushroom, Trametes versicolor, cultivated on a corn straw substrate using a horizontal stirred tank reactor with a 0.065 mass ratio of PS (w/w dry biomass). Equilibrium and mass balance were obtained from laboratory experiments. From a single-stage extraction of PSs with the mass ratio of boiling water 10:1 (w/w dry biomass), it was found that only 35% of all PSs could be recovered (extraction efficiency) and that 10-minute extraction was sufficient to obtain more than 90% of the equilibrium value. A model based on a stage-to-stage calculation and 98% extraction efficiency (ε) enabled us to compute the number of ideal stages for a counter-current leaching system. Concentration of PSs at the exit point of the 6-stage counter-current leaching cascade was 5.9 g/L and was higher than the one obtained after a single-stage extraction process (5.2 g/L).


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