Fig. 3
From: An approach to change the basic polymer composition of the milled Fomes fomentarius fruiting bodies
Extraction steps to change the polymer composition in the powdered F. fomentarius fruiting bodies. Dried F. fomentarius fruiting bodies were fine milled, mixed with extraction agents (NaOH or HCl) and incubated for 3 or 24 h at different temperatures as described. The liquid phase was filtered and disposed. Before changing the extraction agent, the solid phase was washed several times with demineralized hot water until neutral pH was attained. Some aliquots of the solid phase (Samples #1–3) were dried at 60 °C and used for further analysis