title: Separation and identification of food colours. IV. Extraction of synthetic water-soluble food colours.
mesh_terms: D002852:Chromatography, Ion Exchange; D004396:Coloring Agents / Q000032:analysis*; D005503:Food Additives / Q000032:analysis*; D008722:Methods; D006113:United Kingdom
chemical_list: D004396:Coloring Agents; D005503:Food Additives