Selenium in Nutrition REVISED EDITION pptx

[...]... chemistry of selenium in soils Regional distribution of forages and grain containing low, variable, or adequate levels of selenium in the United States and Canada Cycling of selenium in nature Some possibilities of biological cycling of selenium Interrelationships of selenium, vitamin E, and sulfur amino acids 16 24 37 38 55 About this PDF file: This new digital representation of the original work has... sodium; selenium dioxide; selenium disulfide; selenium hexafluoride; and selenium monosulfide These compounds are used mainly in the manufacture of glass; in xerography; in conductors, rectifiers, electron emitters, and insulators; as reagents; in remedies for eczemas and fungus infections in pets; in antidandruff agents for humans; and in veterinary therapeutic agents In agriculture, early uses for selenium. .. with inadequate selenium and vitamin E, was seen by Klaus Schwarz in 1939 as he used purified diets to study vitamins in Richard Kuhn's laboratory at the Kaiser Wilhelm Institute (now the Max Planck Institute) in Heidelberg (Schwarz, 1976) Interestingly, Alvin Moxon, as a graduate student at South Dakota State University in the early 1930s, documented a growth response in chicks fed low levels of selenium. .. attribution ix Selenium in Nutrition REVISED EDITION About this PDF file: This new digital representation of the original work has been recomposed from XML files created from the original paper book, not from the original typesetting files Page breaks are true to the original; line lengths, word breaks, heading styles, and other typesetting-specific formatting, however, cannot be retained, and some... and electronic configuration of selenium Analysis of selenium Variation of selenium concentrations in various feed ingredients Selenium content of selected foods of various countries Estimated human daily intake of selenium from dietary sources Concentrations of selenium in animal tissues in relation to level of dietary selenium Average enzyme concentrations in wet swine tissue 1 2 3 4 5 6 7 4 7 27... final chapter for selenium in nutrition has not yet been written About this PDF file: This new digital representation of the original work has been recomposed from XML files created from the original paper book, not from the original typesetting files Page breaks are true to the original; line lengths, word breaks, heading styles, and other typesetting-specific formatting, however, cannot be retained,... which selenium may be recovered either by volatilization during roasting or furnacing or by leaching of roasted calcine or furnace slag In 1973, total free world production of selenium was 1.1 million kg, with Japan, the United States, and Canada the leading producers in that order The principal commercial selenium compounds are selenides of aluminum, arsenic, bismuth, cadmium, calcium, copper, and indium;... formatting, however, cannot be retained, and some typographic errors may have been accidentally inserted Please use the print version of this publication as the authoritative version for attribution INTRODUCTION 1 1 Introduction In 1818, Berzelius in Gripsholm, Sweden, identified selenium as a new chemical element From humble beginnings as a residue in a sulfuric acid vat, selenium has found exciting... waters Selenium is rarely found in the native state It has been found as a major constituent of 40 minerals and a minor component of 37 others, chiefly sulfides (Cooper et al., 1970) The minerals are finely dispersed without forming a selenium ore Selenium is located in mineral deposits and some soil formations where a high concentration of sulfur is found (Painter, 1941) The greatest abundance of selenium. .. original typesetting files Page breaks are true to the original; line lengths, word breaks, heading styles, and other typesetting-specific formatting, however, cannot be retained, and some typographic errors may have been accidentally inserted Please use the print version of this publication as the authoritative version for attribution DISTRIBUTION 11 ppm In a study of Canadian ores in which the selenium . Cataloging in Publication Data National Research Council (U.S.) Subcommittee on Selenium. Selenium in nutrition. Bibliography: p. 1. Selenium in human nutrition. . Engineering in the conduct of their services to the govern- ment, the public, and the scientific and engineering communities. It is administered jointly