Abstract:

The volatiles of Mantou were extracted by Simultaneous distillation-extraction (SDE) and Headspace solid phase microextraction(SPME) respectively, then were separated and identificated by gas chromatography - mass spectrometry (GC- MS) , to analysis the different of volatiles extracted by two different methods. There are 25 compounds were detected from sample extracted by SDE, and 50 compounds were identified by SPME. Total of 70 species of volatile compounds, including alcohols, aldehydes, ketones, esters et al, were detected from samples which were prepared by two methods. Although species of compounds detected by SPME are more than SDE, but concentration of compounds in sample extracted by SPME are lower. From the separation efficiency of total-ion current chromatogram, the extract method of SDE is better than SPME.