E174 — пищевая добавка, краситель: серебро, silver (Е174)

Silver is used in food to give a metallic surface colour. However prolonged consumption may lead to argyria, a blue-grey skin. The greatest source of silver now is as a by product in the manufacture of non-ferrous metals such as Cu, Pb, Zn. Silver is usually obtained from crushed silver bearing ore. The actual method of recovery from the ore depends on which metal is predominant in the ore but normally ends by electrolysis using one of two techniques, either the Moebius or Thum Balbach systems. Silver is used extensively in the photographic industry, as well as in silverware and jewellery, electrically, for silvering mirrors and in batteries. Typical products include sugar coated flour confectionery. Not permitted in Australia prior to 1992. Long regular use can lead to blue-grey skin (this is not dangerous). Avoid it.



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