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Citronellyl Butyrate Synthesis in Non-Conventional Media Using Packed-Bed Immobilized Candida Rugosa Lipase Reactor
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نویسنده
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Dahlan I. ,Kamaruddin A. H. ,Najafpour G. D.
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منبع
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International Journal Of Engineering - 2005 - دوره : 18 - شماره : 2 - صفحه:153 -164
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فایل تمام متن
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چکیده
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The synthesis of citronellyl butyrate by direct esterification reaction catalyzed by immobilized lipase from candida rugosa was studied in a continuous packed bed reactor using /7-hexane as organic solvent. parameters such as residence time, temperature, and ph were examined. the optimum conversion was obtained at a flow rate of 1 ml/min (residence time 8 min), temperature of 50 °c, and ph 7.5. at high temperature, biocatalyst was rapidly deactivated with respect to time. the immobilized lipase was stable at ph range of 6 to 9. the deactivation of biocatalyst was increased at ph of immobilized lipase 4 and 10 in comparison with ph range from 5 to 9. the esterification reaction in packed-bed reactor was modeled by ping pong model and ping pong with product inhibition model. the observed kinetics behaviour of esterification reaction was found to follow a ping pong with product inhibition model. in this study, the conversion of butyric acid and stability of immobilized lipase was higher in the system with molecular-sieve than in the system without molecular-sieve
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کلیدواژه
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Citronellyl Butyrate ,Flavor ,Esterification ,Immobilized Lipase ,Non-Conventional Media ,Packed-Bed Reactor ,Ping Pong Model
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آدرس
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University Sains Malaysia, School Of Chemical Engineering, Malaysia, University Sains Malaysia, School Of Chemical Engineering, Malaysia, University Sains Malaysia, School Of Chemical Engineering, Malaysia
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پست الکترونیکی
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najafpour@yahoo.com
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Authors
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