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      • Optimization of Aniline Biopolymerization Reaction Conditions By Response Surface Methodology (RSM)

        Adnan Aldemir,Emre Birhanlı,Nahit Aktaş,Özfer Yeşilada 보안공학연구지원센터 2014 International Journal of Bio-Science and Bio-Techn Vol.6 No.6

        Response Surface Methodology(RSM) was applied to enzymatic polymerization of aniline, which was conducted in a closed system containing sodium acetate buffer and presence of poly(sodium 4-styrene sulfonate)(SPS) polyelectrolyte as a template with laccase enzyme to produce water soluble polyaniline. Laccase enzyme used as catalyst was isolated from Trametes versicolor (ATCC 200801). The enzymatic polymerization rate of aniline based on measurements of initial dissolved oxygen (DO) consumption rate in the closed system, was optimized by the application of RSM. The independent variables, which had been found the most effective variables on the initial DO consumption rate by screening experiments, were determined as monomer concentration, medium temperature and medium pH. A quadratic model was developed through RSM in terms of related independent variables to describe the initial DO consumption rate as the response. Based on statistic analysis, optimum reaction conditions for the maximum initial DO consumption rate determined 42.50 mM, 39.34 °C and 5.45 as monomer concentration, medium temperature and medium pH, respectively.

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