| Title: | Enzymatic fatty ester synthesis |
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| Authors: | ID Pečnik, Simona (Author)
ID Knez, Željko (Author) |
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| Files: |  http://dx.doi.org/10.1007/BF02635898
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| Language: | English |
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| Work type: | Unknown |
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| Typology: | 1.01 - Original Scientific Article |
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| Organization: | FKKT - Faculty of Chemistry and Chemical Engineering
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| Abstract: | Fatty ester synthesis with immobilized 1,3-specific lipase from Mucor Miehei is described. 1,2-Isopropylidene glycerol was peoduced by condensation of glycerol with acetone was esterified with oleic acid in the presence of a Mucor Miehei lipaze (Lipozyme TM) to obtain 1,2 isopropylidene- 3-oleoyl glycerol. The effects of various process parameters (temperature and pressure)and various ratios (enzyme/substrate) have been investigated to determine optimal conditions for the esterification process. The highest conversion of oleic acid (80% w/w) was obtained at 55 oC and 57.057 bar, while the optimal addition of lipase to substrate was determined to be 0,096 g per gram of reaction mixture. The esterification can be modelled successfully as a reverse second order reaction. Thermodynamic properties of the reaction system at 55 oC and 0.057 bar were also determined. Activation energy was 20.82 kJ/mole, entropy of activation -0,26 kJ/(Kmole) and free energy of activation was 103.32 kJ/mole. |
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| Keywords: | chemical engineering, biotechnology, esterification, syntheses, esters, enzymes, lipase, Mucor miehei, reaction kinetics, reaction thermodynamics, 1, 2-isopropylidene-3-oleoyl glycerol |
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| Year of publishing: | 1992 |
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| PID: | 20.500.12556/DKUM-35103  |
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| UDC: | 66.095.13:577.15 |
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| ISSN on article: | 0003-021X |
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| COBISS.SI-ID: | 4025092 |
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| NUK URN: | URN:SI:UM:DK:KIDREIVQ |
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| Publication date in DKUM: | 06.06.2012 |
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| Views: | 2789 |
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| Downloads: | 103 |
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| Metadata: |    |
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| Categories: | Misc.
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