Fig. 4From: Determination of volatile alkylpyrazines in microbial samples using gas chromatography-mass spectrometry coupled with head space-solid phase microextractionSIM and scan chromatograms of 2,5-dimethylpyrazines (DMP) and 2-ethylpyrazine (EP) in the microbial sample on the DB-5MS (a) and DB-WAX (b) columnsBack to article page