Flavor Detection of Shanxi Aged Vinegar and Aged Vinegar Based on Electronic Nose and Electronic Tongue Technology
A total of 12 samples of Shanxi aged vinegar and aged vinegar from Shanxi province with different standards were tested with Heracles NEO ultra fast gas chromatography electronic nose and Astree electronic tongue.The results showed that:Based on odor differences,the electronic nose could not effectively distinguish the two types of aged vinegar samples.A total of 33 volatile odor compounds were detected from 12 samples by electronic nose,including 5 acids,6 esters,7 alcohols,4 aldehydes,3 ketones,2 phenols,and 6 other compounds.Among the 33 odor compounds,25 were common volatile odor components.Based on the difference in taste,the electronic nose can distinguish the aged vinegar from Shanxi origin aged vinegar and Shanxi aged vinegar samples.The electronic tongue taste analysis results showed that the aged vinegar had stronger sour taste than Shanxi aged vinegar.The electronic tongue could be used to comprehensively analyze the overall taste difference between samples and realize the identification and differentiation of two kinds of aged vinegar,which could provide technical reference for the identification of vinegar types.
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