Simultaneous determination of synthetic food colors by method of partial least squares
- VernacularTitle:偏最小二乘法—分光光度法同时测定多种食用合成色素
- Author:
Yan JIA
- Publication Type:Journal Article
- Keywords:
Partial least squares(PLS);
Spectrophotometry;
Synthetic food colors
- From:
Journal of Chongqing Medical University
1986;0(02):-
- CountryChina
- Language:Chinese
-
Abstract:
Objective:To study the application of partial least squares (PLS) in spectrophotometry,and to simultaneously determine four synthetic food colors with PLS.Methods:? max for Tartrazine,sunset yellow,ponocean 4R and amaranth were 428?2nm,482?2nm,508?2nm,520?2nm respectively,which revealed significant overlapping of simultaneous determination of mixture of four synthetic food colors by spectrophotometry,whithout any preliminary chemical separation.Results:The mean recoveries and relative standard deviation(RSD) for each sample were 100.6%,100.5%,99.5%,101.1% and 1.28%,1.11%,1.01%,1.96%,respectively.The actual results of two kinds of samples were also satisfactory.Conclusion:The patial least squares may provide a new approach to determination of the content from multi-component spectroscpic data whithout any preliminary chemical separation.
