Abstract
A lab-scale smoke generator was developed to enable smoke to be generated and collected in a controlled manner to analyze smoke from Manuka wood, a hardwood species indigenous to New Zealand. The impact of smoke generation parameters, including temperature and atmosphere, on the generation of aroma compounds and polycyclic aromatic hydrocarbons (PAHs) was investigated. Volatile organic compounds (VOCs) were trapped using stir-bar sorptive extraction (SBSE), and analyzed using gas chromatography-mass spectrometry (GC-MS). Manuka wood smoke was generated at two temperatures (280 degrees C and 480 degrees C) under either air or nitrogen. The VOCs in Manuka smoke varied depending on the smoke generation conditions, demonstrating the possibility of smoke manipulation. Eight PAHs with molecular weight no greater than 202 Da were detected. Higher temperature produced higher levels of PAHs, while the impact of atmosphere composition varied in a compound-specific manner.