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Benders'dictionary of nutrition and food technology

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257day. Blood loss leads to a considerable loss <strong>of</strong> iron. The averagediet contains 10–15 mg, <strong>of</strong> which 0.5–1.5 mg is absorbed. Thehaem iron <strong>of</strong> meat <strong>and</strong> fish is considerably better absorbedthan the inorganic iron <strong>of</strong> vegetable <strong>food</strong>s. Absorption <strong>of</strong> ironis enhanced by vitamin c taken at the same time as ironcontaining<strong>food</strong>s, <strong>and</strong> reduced by phosphate, calcium <strong>and</strong> phyticacid.See also anaemia; ferritin; haemochromatosis; iron storage;transferrin.iron ammonium citrate See ferric ammonium citrate.iron binding capacity, total See transferrin.iron chink Machine designed in 1903 by US inventor A. K. Smithto behead, split <strong>and</strong> gut salmon in a continuous operation; socalledbecause it replaced Chinese labour in canneries.iron ration Heat-resistant high-energy chocolate ration enrichedwith vitamins <strong>and</strong> minerals devised for US Army by Capt. PaulLogan <strong>and</strong> first produced by Hershey Chocolate in 1937, as theLogan Bar Ration D (for daily). Heat-resistant because it did notcontain cocoa butter.iron, reduced Metallic iron in finely divided form, produced byreduction <strong>of</strong> iron oxide. The form in which iron is sometimesadded to <strong>food</strong>s, such as bread. Also known by its Latin nameferrum redactum.iron storage ferritin is the iron storage protein in the intestinalmucosa, liver, spleen <strong>and</strong> bone marrow. It is a ferric hydroxide–phosphate–protein complex containing 23% iron. Haemosiderinis a long-term reserve <strong>of</strong> iron in tissues; colloidal iron hydroxidecombined with protein <strong>and</strong> phosphate, probably formed byagglomeration <strong>of</strong> ferritin, the short-term storage form. Abnormallyhigh levels <strong>of</strong> haemosiderin occur in siderosis.irradiation ionising radiation (X-rays or γ-rays) kills microorganisms<strong>and</strong> insects, so is used for sterilisation <strong>of</strong> <strong>food</strong>s; alsoinhibits sprouting <strong>of</strong> potatoes.See also microwave cooking; radappertisation; radicidation;radurisation; ultraviolet radiation.IRRI International Rice Research Institute, Los Baños, Philippines.Web site http://www.irri.org/.irritable bowel syndrome Also known as spastic colon or mucouscolitis. Abnormally increased motility <strong>of</strong> the large <strong>and</strong> smallintestines, leading to pain <strong>and</strong> alternating diarrhoea <strong>and</strong> constipation;<strong>of</strong>ten precipitated by emotional stress.isaño Edible tubers <strong>of</strong> the Andean plant Tropaeolum tuberosum.ischaemia Inadequate blood supply to a tissue.ischaemic heart disease Or coronary heart disease. Group <strong>of</strong> syndromesarising from failure <strong>of</strong> the coronary arteries to supply

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