Application of electronic tongue technology in detection and evaluation of low-sodium formulation

The use of electronic tongue technology in detation and evaluation of low-sodium formuation was investigated in this study.The data of the sample solution was acquired by Voltammetric electronic tongue.The signal noise was removed by wavelet transform, and the sample solution was analyzed and evaluated by principal component analysis and clustering analysis, the low-sodium salt formulation score prediction model was established based on partial least squares.The results showed that wavelet transform can remove high frequency noise and save useful component of the signal, principal component analysis and cluster analysis can distinguish and classify the samples and correctly reflect the affinities of the sample, the RMSE of modeling sets and prediction set of salty prediction model based on partial least squares were 3.18% and 1.75%, the result of forecast was good.The research results provided a rapid detection method to evaluate the quality of low-sodium salt formulation.