Study on Flavoring Components of Daqu by Headspace Solid-Phase Microextraction Gas Chromatography-Mass Spectrometry(GC-MS)

The flavoring components were detected by headspace solid-phase microextraction gas charomatography-mass spectrometry(GC-MS) and the detection conditions were as follows: water bathing temperature at 75 ℃,4 h stability time,and 2 min desorption.The results suggested that 68 kinds of volatile components and half-volatile components in Daqu could be determined,the application of full-scan collection method could gather more extensive non-heterocyclic compounds and other substances,lots of flavouring components such as ethanol,acetic acid,ethyl caproate,caproic acid,and ethyl acetate etc.in product Daqu were quite similar with the flavouring microconstituents in base liquor,the contents of microconstituents in Daqu were far higher than their contents in base liquor,and the microconstituents in Daqu mainly were heterocyclic compounds through preliminary qualitative analysis.(Tran.by YUE Yang)