Abstract
The residues from the extraction (RE) of a sawdust and the oxidation (RO) of RE were analyzed with a Fourier transform infrared (FTIR) spectrometer, thermogravimetric analyzer, and Curie-point pyrolyzer-gas chromatograph/mass spectrometer (CPP-GC/MS) with electron impact ionization source. FTIR analysis shows that both RE and RO, especially RO, are rich in OH, >CO, and >CO functional moieties. The pyrolyses of RE and RO mainly occurred at 250–380 °C and the maximum mass loss (ML) from RE and RO occurred at 361 and 354 °C, respectively. More ML and higher ML rate occurred in RO. According to the analysis with CPP-GC/MS, the total relative content of guaiacols from RE pyrolysis is ca. 40% and saccharides (over 30%) are the richest group components from RO pyrolysis.
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