ビタミンB_2の光分解に関する研究 : (IX)ビタミンB_2その他の蛍光物質の蛍光度に対する諸種化合物の影響

概要

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The flurorescence of riboflavin in weak acidic solution is weakened by the addition of some amino acids, such as tyrosine or tryptophan. When this mixture is irradiated with light, the speed of decomposition of riboflavin is retarded with the decrease of fluorescence, and simultaneously the amino acids above described are decomposed. The same phenomenon was also observed in the addition of phenol, thiourea, ascorbic acid and p-aminobenzoic acid. The fluorescence of riboflavin completely disappeared when the quantity of these substances increased, and no decomposition of riboflavin took place with irradiation. The fluorescent substances other than riboflavin, such as lumichrome, lumiflavin, eosine, fluoresceine or quinine show a similar behavior to riboflavin in that the intensity of fluorescence is affected by the addition of the substances described above with the exception of thiochrome and anthranilic acid.
日本ビタミン学会の論文