โ Scribed by Ingrid Lombeck; K. Kasperek; B. Bonnermann; L. E. Feinendegen; H. J. Bremer
No coin nor oath required. For personal study only.
The selenium content of human milk, cow's milk and cow's milk infant formula were estimated by instrumental neutron activation analysis. The highest values were found in 3 samples of human colostrum (524--865 x 10(-9) g/g dry weight). There was a significant decrease with increasing time post partum. Mature human milk exhibited a selenium content of 230 +/- 79 x 10(-9) g/g dry weight. The selenium content of 45 samples of cow's milk from the north-western area of Germany was 200 +/- 39 x 10(-9) g/g dry weight. While there was no significant difference between the values of mature human milk and of cow's milk, cow's milk infant formula exhibited significantly (P less than 0.01) lower values than human milk. The average selenium content of 107 samples of 10 different commercially available fluid and powdered cow's milk infant formulas (range: 18--171 x 10(-9) g/g dry weight) amounted to about only one third of that in mature human milk.
๐ SIMILAR VOLUMES
We found no significant differences in mean total and free tryptophan concentrations in sera of healthy, full-term infants fed cow's milk formula and healthy, full-term infants who were breast-fed. Serum tryptophan concentrations were measured i h after feeding when the infants were 2 and 6 days of
Gas chromatography was used for the qualitative and quantitative determination of fatty acids of authentic buffalo's milk, cow's milk and buffalo's milk adulterated with cow's milk. The milk fat was separated by fractional crystallization at -200C into two distinct fractions, i.e., semi-solid and mo
Selenium was determined in infant formulas sold in Canada and compared with the selenium content of Canadian breast milk samples. Formulas were purchased in the Ottawa area during 1992 (prior to selenium addition to infant formulas) and during 1993 and 1994. Samples (1-2 g) were digested with a mixt