E-catalog        

To establish the quantitative elemental composition of birch chaga, highly sensitive physicochemical methods of analysis were used atomic emission spectroscopy (AES), inductively coupled plasma mass spectrometry (ICP-MS) and neutron activation analysis (NAA). The scientific novelty of this study lies in the conduct of a complex physicochemical elemental layer-by-layer analysis of chaga. The analyzed samples of birch chaga layers contain the following elements: K, Na, Mg, Ca, Zn, Mn, Cu, Fe, Mo, Co, Cr, P, Br, Se, V, Al, Ba, Li, Ag, Au, Rb, Cs, As, Sb, B, Sr, Pb, Ni, Ti, Be, Ta, U, Th, Sc; the concentration of elements is highest in the outer layer of the fungus. Differences in the content of elements correlate with modern biochemical concepts of the composition of chaga, and in most cases also correlate with the values of clarkes in bios. The content of both biogenic elements (K, Co, Mn) and potentially toxic (Ag, Br, Rb) is significantly higher than the corresponding clarkes in bios. The value of the detected toxicant elements does not exceed the MPC.