structural:scholar_edition, linguistic:paraphrasing, structural:expansion, quality:correction
Food colourings

People associate certain colours with certain flavours, and the colour of food can influence the perceived flavour in anything from candy to wine. Since orange is popularly associated with good flavour, many companies add orange food colouring to improve the appearance of their packaged foods. Orange pigments and dyes, synthetic or natural, are added to many orange sodas and juices, cheeses (particularly cheddar cheese, Gloucester cheese, and American cheese); snack foods, butter and margarine; breakfast cereals, ice cream, yoghurt, jam and candy. It is also often added to children's medicine, and to chicken feed to make the egg yolks more orange.

The United States Government and the European Union certify a small number of synthetic chemical colourings to be used in food. These are usually aromatic hydrocarbons, or azo dyes, made from petroleum. The most common ones are:

Because many consumers are worried about possible health consequences of synthetic dyes, some companies are beginning to use natural food colours. Since these food colours are natural, they do not require any certification from the Food and Drug Administration. The most popular natural food colours are: