STUDIES ON THE DETERMINATION OF VITAMIN A IN THE PRESENCE OF CONTAMINANTS HAVING IRRELEVANT ABSORPTION

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概要

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• From the comparison of the values of twenty-two long stored samples before and after alumina column chromatography, the following results were obtained.1. Nine samples (two vitamin preparations and seven fish liver oils) were decided to be in need of purification by chromatography.2. However, the increase in vitamin A value was very small. When these observations and the complicated procedure of alumina column chromatography were considered, it might be concluded that the application of chromatography was not always necessary for vitamin A determination of these samples.3. The Brunius regulation might be available to decide the necessity of chromatographic purification.

• 日本ビタミン学会の論文

著者

• 小林 正

  National Institute of Hygienic Sciences

• 小林 正

  National Institute of Hygienic Sciences, Osaka Branch

関連論文

• STUDIES ON THE DETERMINATION OF VITAMIN A IN THE PRESENCE OF CONTAMINANTS HAVING IRRELEVANT ABSORPTION
• STUDIES ON THE CHEMICAL ISOMERIZATION OF VITAMIN D:I. CHEMICAL ISOMERIZATION OF VITAMIN D2 TO ISOTACHYSTEROL BY ACETYL CHLORIDE
• STUDIES ON THE CHEMICAL ISOMERIZATION OF VITAMIN D:V. CHEMICAL ISOMERIZATION COURSE OF VITAMIN D2 TO ISOTACHYSTEROL2 BY ACETYL CHLORIDE
• STUDIES ON THE DETERMINATION OF VITAMIN A IN THE PRESENCE OF NEOVITAMIN A:II. INFLUENCE OF NEOVITAMIN A ON THE METHOD OF VITAMIN A DETERMINATION IN BRITISH PHARMACOPEIA AND COMPARISON OF THE VITAMIN A VALUES ESTIMATED BY VARIOUS METHODS ON VARIOUS SAMPLES

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