Holzer, W. and Shirdel, J. and Zirak, P. and Penzkofer, Alfons and Hegemann, P. and Deutzmann, Rainer and Hochmuth, E. (2005) Photo-induced degradation of some flavins in aqueous solution. CHEMICAL PHYSICS, 308 (1-2). pp. 69-78. ISSN 0301-0104, 1873-4421
Full text not available from this repository. (Request a copy)Abstract
The blue-light induced photo-degradation of FMN, FAD, riboflavin, lumiflavin, and lumichrome in aqueous solution at pH 8 is studied by measurement of absorption coefficient spectral changes due to continuous excitation at 428 nm. The quantum yields of photo-degradation determined are phi(D)(riboflavin, pH 8) approximate to 7.8 x 10(-3), phi(D)(FMN, pH 5.6) approximate to 7.3 x 10(-3), phi(D)(FMN, pH 8) approximate to 4.6 x 10(-3), phi(D)(FAD, pH 8) approximate to 3.7 x 10(-4), phi(D)(lumichrome, pH 8) approximate to 1.8 X 10(-4), and phi(D)(lumiflavin, pH 8) approximate to 1.1 X 10(-5). In a mass-spectroscopic analysis, the photo-products of FMN dissolved in water (solution pH is 5.6) were identified to be lumichrome and the lumiflavin derivatives dihydroxymethyllumiflavin, formyllumiflavin, and lumiflavin-hydroxy-acetaldehyde. An absorption and emission spectroscopic characterisation of the primary photoproducts of FMN at pH 8 is carried out. (C) 2004 Elsevier B.V. All rights reserved.
| Item Type: | Article |
|---|---|
| Uncontrolled Keywords: | ALGA CHLAMYDOMONAS-REINHARDTII; BLUE-LIGHT RECEPTOR; SPECTROSCOPIC CHARACTERIZATION; FLUORESCENCE; RIBOFLAVIN; BEHAVIOR; DOMAIN; TRANSDUCTION; ABSORPTION; GROWTH; FMN; flavinmononucleotide; FAD; flavin-adeneine-dinucleotide; lumichrome; lumiflavin; formyllumiflavin; riboflavin; dihydroxymethyllumiflavin; lumiflavin-hydroxy-acetaldehyde; photo-degradation; absorption cross-section spectra; fluorescence quantum distributions; mass spectra |
| Subjects: | 500 Science > 530 Physics 500 Science > 570 Life sciences |
| Divisions: | Physics > Institute of Experimental and Applied Physics > Alumni or Retired Professors > Group Alfons Penzkofer Biology, Preclinical Medicine > Institut für Biochemie, Genetik und Mikrobiologie > Lehrstuhl für Biochemie I > Prof. Dr. Rainer Deutzmann |
| Depositing User: | Dr. Gernot Deinzer |
| Date Deposited: | 31 May 2021 13:45 |
| Last Modified: | 31 May 2021 13:45 |
| URI: | https://pred.uni-regensburg.de/id/eprint/36595 |
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