Determination of Six Aldehyde Compounds in Chinese Spirit by Headspace Solid-Phase Microextraction-Gas Chromatography
Objective:Based on headspace solid-phase microextraction gas chromatography(HS-SPME-GC),a method for the determination of six aldehyde compounds in Chinese spirit was established,and their content distribution in three different flavor Chinese spirit was explored.Methods:Take 10 mL of the liquor sample,add 2 g of sodium chloride and ultrasonic to mix well,then perform headspace injection analysis.Results:The linear relationship between six aldehyde compounds exhibited a good within the range of 10-300 mg/L,the limit of detection(LOD)was 0.028-0.390 mg/L,the limit of quantification(LOQ)was 0.092-0.980 mg/L,the average recovery rate was 81.3％-118.9％,and the relative standard deviation(RSD)was 1.9％-8.6％.Except butyraldehyde,isobutyraldehyde,furfural,n-butyraldehyde and isovaleraldehyde were detected in different degrees in the samples of three types of flavor Chinese spirit,with the detection rate of 17％-100％and the detection value of 0.24-49 mg/L,acrolein was detected in mild aromatic Chinese spirit,with the detection rate of 21％,and the detection value of 0.46-3.52 mg/L.Conclusion:The method can be used for the determination of six aldehyde compounds in Chinese spirit.The detection rate and content of isobutyraldehyde,furfural,n-butyraldehyde and isovaleraldehyde had a certain relationship with to the flavor type of Chinese spirit.
headspace solid phase microextraction gas chromatographyChinese spiritaldehyde compoundsflavor typemethod establishment
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