منابع مشابه
History of nutrition symposium: trace element nutrition and human health.
Discovery of the importance of trace elements in nutrition began in the 19th century with the chemical analysis of elements in biological samples and the demonstration that certain elements were essential for growth of microorganisms, e.g., essentiality of zinc for Aspergillus niger (Raulin 1869). The clinical investigations of Stockman (1893, 1895a and 1895b) in women with “chlorosis” and the ...
متن کاملRecent Findings in Trace Element Nutrition
Studies in South Australia in the 1930-40's showed that the coastal areas .and, to a lesser extent, the areas inland had inadequate levels of cobalt and copper for livestock health and production. Since these studies, selenium responsive conditions have been recognised in livestock depastured on the ironstone soils in the higher rainfall areas and also in isolated, but at present ill-defined, a...
متن کاملTrace element nutrition and bone metabolism.
Many of the trace elements which have essential roles in animals, such as zinc (Zn), manganese (Mn) and copper (Cu), are required for the growth, development and maintenance of healthy bones (Rucker, 1988; Leach, 1988). Of the remaining trace or ultratrace elements, which by definition are normally present at low concentrations in animal tissues, some have a toxic effect on bone such as lead (P...
متن کاملEssential and toxic trace elements in human health and disease: an update.
Ultratrace elements are those elements with an estimated dietary requirement usually less than 1 mcg/g and often less than 50 ng/g diet for laboratory animals. Elements suggested to fit in the ultratrace category include arsenic, boron, bromine, cadmium, chromium, fluorine, lead, lithium, molybdenum, nickel, selenium, silicon, tin and vanadium. Since the first meeting in 1986 of the Internation...
متن کاملSilicon as an essential trace element in animal nutrition.
Within the last decade silicon has been recognized as participating in the normal metabolism of higher animals and as being an essential trace element. Silicon is found to perform an important role in connective tissue, especially in bone and cartilage. Bone and cartilage abnormalities are associated with a reduction in matrix components, resulting in the establishment of a requirement for sili...
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ژورنال
عنوان ژورنال: Journal for the Integrated Study of Dietary Habits
سال: 2003
ISSN: 1881-2368,1346-9770
DOI: 10.2740/jisdh.13.226