“…In the first part of the pyrograms -similarly to the Py-GC/MS chromatogramsmainly polysaccharide and lignin derivatives have been identified. Between 25 and 42 min retention time fatty acid methyl esters (27-34, 36, 38, 42, 43, 45, 48, 50, 54) and hydrocarbons (41,47,51) can be found. The last part of the pyrogram is dominated by phytosterol derivatives (52, 53, 56-61).…”