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- Food additives used to alter or improve the
- colour of processed foods. They include
- artificial colours, such as tartrazine and
- amaranth, which are made from petrochemicals,
- and the `natural' colours such as
- chlorophyll, caramel, and carotene. Some of
- the natural colours are actually synthetic
- copies of the naturally occurring substances,
- and some of these, notably the synthetically
- produced caramels, may be injurious to
- health.
-