Rapid Analysis of Pepper Powders with Electronic Nose

The odor of different pepper powders(black pepper powders;white pepper powders;dehydrated green pepper powders;vacuum freezing green pepper powders)were analyzed by electronic nose.The analyses of data demonstrated that the electronic nose had high identification in classification the odor of different pepper powders and the best results was obtained from principal component analysis(PCA)than discriminant factor analysis(DFA).Electronic nose technology was faster,more objective and repeatable for analysis of raw materials which contained complex components.