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Carmine

Carmine may be prepared from cochineal, by boiling dried insects in water to extract the carminic acid and then treating the clear solution with alum, cream of tartar, stannous chloride, or potassium hydrogen oxalate; the coloring and animal matters present in the liquid are thus precipitated. Other methods are in use in which egg white, fish glue, or gelatin are sometimes added before the precipitation.

Carmine is used in the manufacture of artificial flowers, paints, crimson ink, rouge, and other cosmetics, and is routinely added to food products such as yoghurt and certain brands of juice, most notably those of the ruby-red variety.

Credits: Wikipedia

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