In this paper, the application of electronic nose (e-nose) technology in the detection of fresh vegetablesfreezing time is taken as the research goal. This paper uses the literature analysis method, test detectionmethod and comparative analysis method, basing on a brief introduction of e-nose technology, it takes freshbeans stored for different days (1-6 days) at room temperature and -18°C freezing condition as the researchobject. According to the response of the sensor array to the volatile components and three model analysismethods, the freezing time of fresh vegetables is determined, among which, both PCA and LDA canaccurately detect the freezing time of fresh vegetables. Loadings analysis shows that hydrogen sulfide andnitrogen oxides play a major role in detecting the freezing time of fresh vegetables. The results show that thee-nose can quickly and accurately detect the freezing time of fresh vegetables.
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