1990
DOI: 10.1016/0014-5793(90)80537-s
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Kinetic study of esterification by immobilized lipase in n‐hexane

Abstract: The kinetic of the esterification of oleic acid by ethanol catalyzed by immobilized lipase of Mucor miehei in n-hexane as a solvent has been completely studied. The kinetics of the reaction are suggested to agree with a Ping-Pong Bi Bi mechanism in which only inhibition by excess of ethanol has been identified. Values of all apparent kinetic parameters were computed. No evidence of any significant external diffusional limitation which could account for these values has been detected. Opti~~tion of water conten… Show more

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Cited by 195 publications
(90 citation statements)
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“…There are several papers on the study of the influence of water and solvent on lipase-catalyzed reactions in organic media [1,2,10,12,19,20]. In general, the optimal content is found at water/dry lipase mass ratio (R W ) range 0-0.1 (g of water/g of dry lipase) and in many cases these values concur with the water content that remains in the enzyme in the immobilization process (R W between 0.01 and 0.05; 1-5% dry weight).…”
Section: Resultsmentioning
confidence: 99%
“…There are several papers on the study of the influence of water and solvent on lipase-catalyzed reactions in organic media [1,2,10,12,19,20]. In general, the optimal content is found at water/dry lipase mass ratio (R W ) range 0-0.1 (g of water/g of dry lipase) and in many cases these values concur with the water content that remains in the enzyme in the immobilization process (R W between 0.01 and 0.05; 1-5% dry weight).…”
Section: Resultsmentioning
confidence: 99%
“…instead of 50%, see Table 2.). Although the most accepted mechanism theory for the of lipase catalysed reactions is the ping-pong bi-bi mechanism [25][26][27], if there is a large excess of one of the reactants, as it is in this case, first order kinetics might be also applied. [28] Enantioselectivities of all reactions were >1000 meaning highly enantioselective catalysis.…”
Section: Resultsmentioning
confidence: 99%
“…En la mayoría de estudios similares donde se llevan a cabo reacciones de esterificación-transesterificación con solventes, se utiliza hexano debido a la estabilidad de las lipasas en este solvente (Chulalaksananukul et al, 1990;Guncheva y Zhiryakova, 2008;Sandoval et al, 2002). A diferencia de estos trabajos, en nuestro caso se eligió el terbutanol, ya que es más seguro que el hexano, pues es menos tóxico y menos volátil.…”
Section: Efecto De Los Factores Sobre La Conversiónunclassified