Mathematical model of aldol addition of dihydroxyacetone to N-Cbz-glycinal in the batch reactor

U radu je opisana reakcija aldolne adicije dihidroksiacetona na N-Cbz-glicinal u kotlastom reaktoru koja je katalizirana s D-fruktoza-6-fosfat aldolazom (FSA) dobivenom iz E. coli. Ispitana su tri potencijalna enzima kao katalizatora ove reakcije: FSA A129S, FSA A129S/A165G i FSA A129N. Odabran je enzim FSA A129N koji je dao najveću konverziju reaktanta u najkraćem vremenu u reakciji aldolne adicije. Kinetika ove reakcije je ispitana metodom početnih reakcijskih brzina. Ispitan je utjecaj komponenti reakcijskog sustava na početnu brzinu reakcije. Na temelju procijenjenih kinetičkih parametara i sheme reakcije razvijen je matematički model procesa u kotlastom reaktoru. U provedenim reakcijama aldolne adicije dihidroksiacetona na N-Cbz-glicinal u kotlastom reaktoru postignuta je maksimalna konverzija od 88%.This work deals with the reaction of aldol addition of dihydroxyacetone on N-Cbz-glycinal catalyzed by D-fructose-6-phosphate aldolase (an enzyme produced by E. coli) in the batch reactor. Three potential enymes were tested as catalysts for this reaction: FSA A129S, FSA A129S/A165G and FSA A129N. The chosen enzyme was the one that gave the best conversion in the shortest time in the reaction of aldol addition. The reaction kinetics were tested with the initial reaction rate method. The influence of the reaction components on the initial reaction rate is also presented in this work. The mathematical model of the process was developed on the basis of reaction scheme and estimated kinetic parameters. The maximum achieved conversion in the conducted experiments of aldol additions of dihydroxyacetone on N-Cbz-glycinal in the batch reactor was 88%