Abstract
Esterification between oleic acid and oleyl alcohol, catalyzed by theMucor miehei immobilized lipase in a batch-stirred tank reactor with supercritical carbon dioxide as solvent produced higher reaction rates at supercritical conditions than in the solvent-free system. A continuous fixed-bed reactor was designed based on the results obtained from batch experiments. At 150 bar, 40°C, and with water activity 0.46% w/w, the activity of the enzyme preparation is practically unchanged when CO2 was used as solvent. The addition of small amounts of water increases the conversion rate. The higher conversion also was observed at longer residence time. Whenn-butane was used as reaction medium, a decrease in conversion was observed.
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Knez, Ž., Rižner, V., Habulin, M. et al. Enzymatic synthesis of oleyl oleate in dense fluids. J Am Oil Chem Soc 72, 1345–1349 (1995). https://doi.org/10.1007/BF02546210
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DOI: https://doi.org/10.1007/BF02546210