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Fructosyltransferase 와 Glucose isomerase 혼합효소계를 이용한 프락토 올리고당의 생산
윤종원,노지선,이민규,송승구 ( Jong Won Yun,Ji Seon Noh,Min Gyu Lee,Seung Koo Song ) 한국화학공학회 1993 Korean Chemical Engineering Research(HWAHAK KONGHA Vol.31 No.6
The production of fructo-oligosaccharides having new composition was investigated using the mixed-enzyme system of fructosyltransferase and glucose isomerase. Despite of decrease in glucose concentration which acts as an inhibitor of fructosyltransferase during the production of fructo-oligosaccharides, the concentration of fructo-oligosaccharides was not high due to the altered kinetic parameters in the mixed-enzyme system. To confirm these results, a mathematical model for the mixed-enzyme system was proposed and compared with the experimental results, which showed good agreement with experimental data. Surprisingly, the K_m values and inhibition constant of glucose(K_(iG)) for fructosyltransferase in the mixed-enzyme system were different from those of fructosyltransferase alone. The fructose isomerized from glucose by glucose isomerase did not act as a sucrose acceptor, which meant the isomerized fructose did not play a part in the production of fructo-oligosaccharides.