1 Scope
This standard specifies the method for determination of synthetic colour (excluding aluminium lake) in beverages, integrated alcoholic beverages, hard candy, preserved fruits, starch jelly candy, marble chocolate and colored sugar coated products.
This standard is applicable to the determination of synthetic colour (excluding aluminium lake) in beverages, integrated alcoholic beverages, hard candy, preserved fruits, starch jelly candy, marble chocolate and colored sugar coated products.
2 Principle
Extract the synthetic colour in foods by polyamide adsorption method or liquid-liquid distribution, make it into water solution, inject it into high performance liquid chromatograph, and then carry out qualitative analysis according retention time and quantitative analysis by comparing with peak area after reversed-phase chromatography separation.
3 Reagents and Materials
Foreword i
1 Scope
2 Principle
3 Reagents and Materials
4 Instruments and Apparatus
5 Analytical Procedures
6 Expression of Analysis Results
7 Precision
8 Others
Appendix A Standard Chromatogram of Colorant