Fecha de publicación: 05/04/2022 Fuente: Wipo "olive oil" The invention provides a method for distinguishing special-grade virgin olive oil from other olive oil based on a flavor marker, which adopts a headspace gas phase ion mobility spectrometry analysis method, and utilizes the peak area of the flavor marker in the olive oil and the fingerprint response spectrum difference to distinguish. The related flavor markers are (E)-2-hexenal, (E)-3-pentene-2-ketone, 3-pentanone, 1-pentene-3-ketone, 2-methylbutyraldehyde, isovaleraldehyde and methyl acetate, and can also be used as characteristic flavor markers of special virgin olive oil. According to the distinguishing method, only simple headspace treatment is needed, interference of external solvents is avoided, the detection accuracy is improved, instrument conditions are correspondingly controlled, it can be guaranteed that volatile matter in olive oil is volatilized to the maximum extent, useful information loss caused by disintegration of flavor marker substance structures due to excessive conditions can be avoided, and the method is suitable for popularization and application. The method is simple and rapid to operate, has no pollution to the environment, and is completely visualized in the characteristic region. And artificial sensory evaluation can be supported.