Analysis method for detecting pyrazine compounds in beer

The invention discloses an analysis method for detecting pyrazine compounds in beer. A method for combining headspace solid-phase microextraction with gas-phase chromatography/mass spectrometry analysis is adopted. The analysis method comprises the following steps of: preparation, headspace solid-phase microextraction, gas-phase chromatography/mass spectrometry analysis, and detection of components to be detected which enter a detector, wherein in the solid-phase microextraction procedure, a 75mu m polydimethylsiloxane extraction fiber head is adopted, and the extraction effect is favorable. By the method, the analysis method for detecting volatile pyrazine components in the beer is established, namely a headspace solid-phase microextraction method is combined with a gas-phase chromatography/mass spectrometry. The method has the characteristics of low sample requirement, high efficiency and the like, and is quick, simple, accurate and sensitive.