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Iranian Journal of Chemical Engineering، جلد ۱۲، شماره ۴، صفحات ۸۴-۹۲
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عنوان انگلیسی Kinetics investigation of cell growth, xanthan production and sugar cane molasses consumption by Xanthomonas campestris
چکیده انگلیسی مقاله In this research, unstructured kinetic modeling for cell growth evaluation by X.campestris, xanthan production and sugar cane molasses consumption in a batch culture were investigated. Logistic model for biomass growth, Luedeking-Piret model for xanthan biopolymer production and modified Luedeking-Piret model for sugar cane molasses consumption provides an accurate prediction of the fermentation kinetics parameters with high coefficient of determination R2 values.Luedeking-Piret model for xanthan biopolymer production in three different concentration of sugar cane molasses (30, 60 and 90 g/l) as the sole carbon source substrate were studied. A good agreement between experimental and predicted values indicated that the unstructured models were able to describe this fermentation process successfully. The values of specific growth rate μ_max of logestic model for sugar cane molasses (30, 60 and 90 g/l) were 0.029, 0.031 and 0.032 h-1 respectively. The values of α and β is 5.280, 6.594, 8.518 and 0.072, 0.066, 0.086 respectively which shows that the xanthan production is growth associated since the value of the growth associated parameter α is much more than the value of nongrowth associated parameter β in Luedeking Piret model. Moreover, the values of γ and 𝜂 in modified Luedeking-Piret model were obtained.
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نویسندگان مقاله محمد پازوکی |
materials and energy center

علی ذاکری |
material and energy research center

منوچهر وثوقی |
chemical and petroleum engineering department, sharif university of technology
سازمان اصلی تایید شده: دانشگاه صنعتی شریف (Sharif university of technology)

نشانی اینترنتی http://www.ijche.com/article_15368_72337c1832249e99fd3b3eb0a9feb9c0.pdf
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