Reutilization of by-product for riboflavin formation in the riboflavin synthetase reaction.

4-(1'-d-ribitylamino)-5-amino-2,6-dihydroxypyrimidine, the Second Product of the Riboflavin Synthetase Reaction.

In this reaction, an additional compound (X) should be formed in amounts equal to that of riboflavin. It has been shown (2) that all of the atoms of the pyrimidine portion, nitrogen atom 8, and the ribityl moiety of 6,7-dimethyl8.ribityllumazine are retained in the unknown compound. Furthermore, during isolation by column chromatography, the unknown compound was cleaved into ribitylamine and a ...

4- (1%Ribitylamino) -5=amino=2,6=dihydroxypyrimidine, the Second Product of the Riboflavin Synthetase Reaction

In this reaction, an additional compound (X) should be formed in amounts equal to that of riboflavin. It has been shown (2) that all of the atoms of the pyrimidine portion, nitrogen atom 8, and the ribityl moiety of 6,7-dimethyl8.ribityllumazine are retained in the unknown compound. Furthermore, during isolation by column chromatography, the unknown compound was cleaved into ribitylamine and a ...

study of cohesive devices in the textbook of english for the students of apsychology by rastegarpour

this study investigates the cohesive devices used in the textbook of english for the students of psychology. the research questions and hypotheses in the present study are based on what frequency and distribution of grammatical and lexical cohesive devices are. then, to answer the questions all grammatical and lexical cohesive devices in reading comprehension passages from 6 units of 21units th...

The Luminescent Oxidation of Reduced Riboflavin or Reduced Riboflavin Phosphate in the Bacterial Luciferin-luciferase Reaction.

‏‎suppression of coke formation in thermal cracking by coke inhibitors‎‏

‏‎the main purpose of this research was to:1.develop a coking model for thermal cracking of naphtha.2.study coke inhibition methods using different coke inhibitors.developing a coking model in naphtha cracking reactors requires a suitable model of the thermal cracking reactor based on a reliable kinetic model.to obtain reliable results all these models shall be solved simultaneously.for this pu...