In the last few decades, the metabolic model of E.coli has attracted the attention of many researchers in the area of biological system modeling. Metabolic models are constructed using mass-balance equations with kinetic-rate computation to simulate the behavior of the metabolic system over time. However, in the development of the metabolic model, large-scale kinetic parameters affect the model response if the parameter values are not assigned accurately, which, in turn, propagates the errors in the ordinary differential equations (ODEs) -the mass balance equations associated with the model. This situation emphasizes the need to adopt a global optimization technique to compute the kinetic parameters such that the errorsthe discrepancy between actual biological data and the model response -are minimized. In this work, the PSO algorithm has been adopted to estimate the kinetic parameters by minimizing the errors of the large-scale of metabolic model response of E. coli with reference to real experimental data. Seven highly sensitive kinetic parameters in the model response were considered in the optimization problem. Estimation of the 7 th kinetic parameters by the PSO method provides a good performance of the model in terms of accuracy. Index Terms-Kinetic parameters, dynamic metabolic model, escherichia coli, PSO algorithm. Science) from the Kyushu Institute of Technology, Japan, in 2010. She currently a senior lecturer at the Universiti Malaysia Pahang, Malaysia, since 2002. Her research interests cover the modelling and simulation, serious games and image processing. Muhammad Nomani Kabir obtained his MSc in 2003 in computational sciences in engineering and his PhD in 2007 in computer science from the University of Braunschweig, Germany. He is currently a senior lecturer at the Faculty of Computer Systems and Software Engineering, University Malaysia Pahang (UMP), Malaysia. He has been a member of IAENG since 2014. He is working as a project leader and a member on many funded research projects from UMP and national grants. He published over 40 journal and conference papers. His research interests include issues related to information security, modelling and simulation, computational methods, image processing and computer networks. Aqeel S. Jaber was born in Iraq in 1977. He received the B.