Manganese in the Diet of Healthy Preschool and School Children

Abstract

Since 1931, manganese has been regarded an diet. Aliquots of the foods actually eaten were col---essential trace element in animal nutrition.Signs of manganese deficiency are s h i l a r in lected to daily food composites. These were freezedried, ground, and stored in airtight plastic bags for analvsis. A more detailed descriotion of the samoline . I diferent species. They include impaired growth method is given in a preceding paper (20). of the skeleton and connective tissue, degeneraAfter mineralization of duplicate samples with HNOJHCIO,, manganese was determined by Atomic tion of ma1e and reproductive organ*, Absorption Spectrophotometry using standard methodand ataxia of the newborn animal. Carbo-ology (3). From 20 duplicates, the standard deviation strated to be a metallo-enzyme containing manContamination with manganese during processing I ganese, and arginase activity is influence by the same element (23). was prevented by keeping the sample in plastic containers and was compensated for by running blanks along with each batch of samples.Manganese deficiency has not been observed in man. The manganese requirement is still under discussion; data in the literature vary between 0.02-0.03 and 0.2-0.3 mg per kg body weight and day (1, 4, 8, 9, 12,21,28).

Die Versorgung von Menschen verschiedener Altersgruppen mit einigen wichtigen Spurenelementen

“…5 wider. [28]. Investigations revealed a very good correspondence of the intake of trace elements, calculated from per capita food consumption, with the analytically determined values of the full daily diet.…”

“…Die wohlbekannte Rolle des Eisens bei der Bildung der Blutkorperchen niacht es nicht erforderlich, die Bedeutung einer adsquaten Versorgung zu betonen. Die aufgenommene Manganmenge liegt im Bereich der Lander mit nicht zu hohem Kohlenhydratverbrauch, obwohl einige Autoren eine hohere Zufuhr fur angebracht halten [28]. Infolge der groDen Beliebtheit von Getreideprodukten mit sehr geringen Schalenanteilen sinkt in den letzten Jahrzehnten die Manganaufnahme in vielen Landern [17].…”