Author(s): ZHANG Lin
Pages: 118-120
Year: 2016 Issue:  8
Journal: China Condiment
Keyword:  vinegar; NIR; organic acid; speed;
Abstract: In the experiment,near infrared spectral analysis technology is applied in the quantitative analytical study of the internal organic acid in vinegar,set up near infrared prediction model of least squares and principal component analysis of near infrared prediction model for eight kinds of organic acids respectively,the correlation coefficients of the models are both greater than 0 .9 ,and the models have better prediction accuracy. The lateral comparison of partial least squares and principal component analysis of these two kinds of modeling methods for quantitative analysis of organic acid in vinegar,it is found that the vinegar organic acids established by partial least squares method has a better near infrared prediction model.Using near infrared spectral analysis technology for the determination of organic acids content in vinegar is rapid,non-destructive,and has great practical application value.