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Effect of Amino Acids on Acrylamide Formation and Elimination Kinetics

机译:氨基酸对丙烯酰胺形成和消除动力学的影响

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The effect of amino acids other than asparagine on acrylamide (AA) formation/ elimination kinetics was studied in an asparagine-glucose model system (0.01 M,pH 6) heated at temperatures between 140 and 200 deg C.Addition of cysteine or lysine to the model significantly lowered the AA yield,whereas addition of glutamine had a strong promoting effect and of alanine a rather neutral effect on the AA formation.This was also reflected by AA formation/elimination kinetics,which for all model systems studied could be modeled by two consecutive first-order reactions.The ratio of the elimination to the formation rate constant increased from the systems to which glutamine or alanine was added,over the control model system,to the model systems that contained lysine or cysteine.
机译:在140至200摄氏度的温度下加热的天冬酰胺-葡萄糖模型系统(0.01 M,pH 6)中研究了天冬酰胺以外氨基酸对丙烯酰胺(AA)形成/消除动力学的影响。 AA模型显着降低了AA产量,而添加谷氨酰胺对AA形成有很强的促进作用,而丙氨酸的添加则具有中性作用。这也通过AA形成/消除动力学来反映,对于所研究的所有模型系统都可以用两个模型进行建模在控制模型系统中,从添加谷氨酰胺或丙氨酸的系统到包含赖氨酸或半胱氨酸的模型系统,消除率与形成速率常数的比率均增加。

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