Esterification reactions catalyzed by lipases immobilized in organogels: effect of temperature and substrate diffusion (Journal article)

Zoumpanioti, M./ Parmaklis, P./ de Maria, P. D./ Stamatis, H./ Sinisterra, J. V./ Xenakis, A.

Rhizomucor miehei lipase was immobilized in hydroxy(propylmethyl) cellulose or agar gels containing lecithin or AOT microemulsions. The effect of the diffusion of substrates and products to this catalyst was studied, as well as the effect of temperature on the initial rate of ester synthesis. The composition of the gel affects the reaction rate due to mass transport phenomena. The apparent activation energies were higher for the systems based on agar, independently of the microemulsion used, and lower for the systems based on AOT microemulsions, independently of the polymer used.
Institution and School/Department of submitter: Πανεπιστήμιο Ιωαννίνων. Σχολή Επιστημών και Τεχνολογιών. Τμήμα Βιολογικών Εφαρμογών και Τεχνολογιών
Keywords: activation energy,catalysis,diffusion,lipase,organogels,temperature,microemulsion-based organogels,in-oil microemulsions,gels,kinetics
ISSN: 0141-5492
Link: <Go to ISI>://000258556000018
Appears in Collections:Άρθρα σε επιστημονικά περιοδικά ( Ανοικτά)

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