STUDIES ON FATTY ACID ESTERS OF FLAVINS:V. CRYSTALLIZATION OF RIBOFLAVIN TETRABUTYRATE AND ITS PHYSICOCHEMICAL PROPERTIES
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概要
- 論文の詳細を見る
A fat-soluble derivative of riboflavin, riboflavin-2′, 3′, 4′, 5′-tetrabutyrate was crystallized from methyl alcohol-water mixture (19:5, v/v), and the reddish yellow, rhombic crystals were obtained. Melting point of this recrystallized sample was found at 147-148° which is a little higher than that previously reported.Infrared spectrum of this sample showed that 2′, 3′, 4′, 5′-tetrahydroxyl groups of riboflavin completely disappeared and that newly formed ester linkages between alcoholic hydroxyl group and carboxyl group of butyric acid appeared.Absorption and fluorescence spectra of R-BUT were studied in water, ethyl alcohol and carbon tetrachloride, and molar extinction coefficients were determined. It was found that R-BUT is soluble in water at low concentration.
- 日本ビタミン学会の論文
著者
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大浜 宏文
Institute of Biochemistry, Faculty of Medicine, University of Nagoya
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八木 国夫
Institute of Biochemistry, Faculty of Medicine, University of Nagoya
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奥田 潤
Institute of Biochemistry, Faculty of Medicine, University of Nagoya
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高橋 嘉哉
Institute of Biochemistry, Faculty of Medicine, University of Nagoya
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