Published December 1947. Facts and recommendations in this publication may no longer be valid. Please look for up-to-date information in the OSU Extension Catalog: http://extension.oregonstate.edu/catalog
The initial purpose of this study was to develop a reliable method
for the determination of vitamin B₆ in blood. At the present time
microbiological assays have demonstrated greater sensitivity and
specificity than other methods for the of vitamin B₆ in
pure solution and many foodstuffs. However, adetermination pplication of...
Published May 1950. Facts and recommendations in this publication may no longer be valid. Please look for up-to-date information in the OSU Extension Catalog: http://extension.oregonstate.edu/catalog
Published May 1960. Facts and recommendations in this publication may no longer be valid. Please look for up-to-date information in the OSU Extension Catalog: http://extension.oregonstate.edu/catalog
4-Pyridoxic acid is the major metabolite of all forms of
vitamin B₆ in mammalian species. The determination of 4-pyridoxic
acid, therefore, is important in the investigation of vitamin B₆
metabolism and for the establishment of human requirements for the
vitamin.
Although 4-pyridoxic acid is itself fluorescent, Huff and
Perlzweig (1944)...
The concentration of ascorbic acid in the plasma was determined on
four levels of ascorbic acid intake for seven day periods in 1946-47 and
on three levels of ascorbic acid intake for ten day periods in 1947-48.
The subjects, eight girls and eight boys, were 16 to 19 year old...
The blood thiamine concentration of 11 subjects was determined
by means of the Friedemann and Kmieciak (1943) method every 5 days
during a 30-day experimental period. Study I was conducted on 5
students in 1947 and Study II was conducted on 6 students in 1948.
The subjects in both studies...
Published June 1959. Facts and recommendations in this publication may no longer be valid. Please look for up-to-date information in the OSU Extension Catalog: http://extension.oregonstate.edu/catalog
1. The recommended allowance of the National Reasearch
Council, 100 mg ascorbic acid for the 18-year-old boys and 80 mg
for the 16 to 19-year-old girls, did not maintain mean plasma ascorbic
acid values at levels as high as the respective saturation means. For
the girls all the mean values...