On-line mass spectrometric analysis of sulfur compounds in hydrothermal process of durian and vegetables

► An online monitoring of gasification of biomasses by IAMS is proposed. ► Seven sulfuric compounds were detected in the resulting gas phase of durian. ► Allicin and alliin were successfully detected from onion and garlic samples. ► Extraction and decomposition were observed for durian when Ca(OH)2 was added. ► For onion and garlic the decomposition process was observed when Ca(OH)2 was added.