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   Citronellyl Butyrate Synthesis in Non-Conventional Media Using Packed-Bed Immobilized Candida Rugosa Lipase Reactor  
   
نویسنده Dahlan I. ,Kamaruddin A. H. ,Najafpour G. D.
منبع International Journal Of Engineering - 2005 - دوره : 18 - شماره : 2 - صفحه:153 -164
فایل تمام متن
چکیده    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
کلیدواژه Citronellyl Butyrate ,Flavor ,Esterification ,Immobilized Lipase ,Non-Conventional Media ,Packed-Bed Reactor ,Ping Pong Model
آدرس University Sains Malaysia, School Of Chemical Engineering, Malaysia, University Sains Malaysia, School Of Chemical Engineering, Malaysia, University Sains Malaysia, School Of Chemical Engineering, Malaysia
پست الکترونیکی najafpour@yahoo.com
 
     
   
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