Recognition of Condiments and Soft Drinks with PVC Membrane Taste Sensor Array

Having platinum electrode (PtE) as the substrate polypyrrole (PPy) coated with different taste sensitives modifying agent PVC membrane, 8 taste sensors are acquired which then constitute arrays- 8-PPP-TSA, together with model 217 double salt bridge SCE. By means of open circuit potential, the corresponding data reaction matrix of the different sample condiments and soft drinks are obtained on the taste sensor interfaces. The data reaction matrix makes possible on the score biplot the visual expression of the similarity and variant degree of the samples via principal components analysis, which accordingly classify the condiments into 4 kinds, namely, umima, salt-umima, salt and sour etc, while the soft drinks into 3 types of sweetness, sour- sweetness and sweetness-sour. And according to the different Euclid distances of the samples, the dendrogram of cluster analysis can be composed using cluster analysis to taste-cluster the diverse samples in terms of the similarity degrees with few classifying errors. In addition, the pattern recognition analysis indicates that the bionic- taste- recognition function of the 8-PPP-TSA shares similarc haracteristicso f theb io-taste-recognition.