Abstract:

The aroma quality of Gala apple during storage at 20 ℃ was evaluated by electronic nose and gas
chromatography-mass spectrometry (GC-MS). The obtained data from electronic nose were analyzed using linear
discriminant analysis. The results showed that linear discriminant analysis (LDA) could successfully discriminate Gala apple
with different storage periods. Meanwhile, based on principal component analysis (PCA) and linear discriminant analysis,
GC-MS could distinguish Gala apple from different storage periods.

Key words: electronic nose, gas chromatography-mass spectrometry, apple, aroma quality