Studies on estrification and sulphonation of riboflavin in the environment of highly concentrated sulphuric acid.
The article presents investigations of riboflavin reactions in aqueous solutions of sulphuric acid. Analysis of UV/VIS, 1H NMR spectra and TLC indicates that at the beginning of the reaction ester of riboflavin were obtained and then sulphonation reaction took place. From the analysis of UV/VIS spectra the kinetics of the reaction was calculated, using own computer program.
Pajak
Wojciech
W
Department of Analytical Chemistry, Medical University of Lódź, 1 Muszyńskiego Str., 90-151 Lódź, Poland.
Brzezińska
Elzbieta
E
D000465:Algorithms; D004952:Esters / Q000138:chemical synthesis; D007700:Kinetics; D009682:Magnetic Resonance Spectroscopy; D012256:Riboflavin / Q000737:chemistry*; D013451:Sulfonic Acids / Q000138:chemical synthesis; D013464:Sulfuric Acids / Q000737:chemistry*
D004952:Esters; D013451:Sulfonic Acids; D013464:Sulfuric Acids; D012256:Riboflavin