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| Kinetics on T1 lipase-catalyzed esterification of oleic acid and glycerol at different temperatures |
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| KeyWord:T1 lipase glycerol oleic acid esterification kinetics |
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| Abstract: |
| T1 lipase was a kind new thermostable lipase and it could catalyze esterification of oleic acid and glycerol. Under the conditions of molar ratio of glycerol to oleic acid 2∶?1, dosage of enzyme 9.7 U/g(based on total mass of reactants) , dosage of Tris-HCl buffer 5%(based on total mass of reactants) and stirring speed 542 r/min, the kinetics of esterification of oleic acid and glycerol catalyzed with T1 lipase at different temperatures were inveastigated. The results showed that the activation energy was 20.272 9 kJ/mol. The kinetic model was pseudo-first order reaction when reaction temperature was lower (40?℃), but it became pseudo-second order reaction when the reaction temperature increased to 50?℃ and 60?℃. |
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