Identification of volatile compounds in Allium Mongolicum Regel by head space solid phase micro-extraction coupled to gas chromatography-mass spectrometry (HS-SPME-GC-MS)

Allium Mongolicum Regel was a kind of wild vegetable which distributed in desert regions with unique odor. HS-SPME-GC-MS was applied to identify the volatile compounds in Allium Mongolicum Regel based on three solid phase fibers of DVB/CAR/PDM, PDMS/DVB and PA. Results showed that 24 compounds were identified and DVB/CAR/PDMS was the optimal one to extract more compounds. 2-Hexenal content was 27.74% , which was the most component, and other four compounds were Risulfide methyl 2-propenyl (25.70% ) , Dimethyl trisulfide (13.62% ) , and Disulfide methyl 2-propeny (7.23% ) , Diallyl disulphide (7.23% ) , which totally represented 84.23% of the identified compounds, 2-Hexenal was first reported in Allium Mongolicum Regel.