Abstract
Multienzymatic conversion of sucrose into fructose and gluconic acid was studied through fed-batch and continuous (in a membrane reactor) processes. The law of substrate addition (sucrose or glucose) for the fed-batch process which led to a yield superior to 80% was the decreasing linear type, whose feeding rate (ϕ; L/h) was calculated through the equation: ϕ = ϕo − k.t, where ϕo (initial feeding rate, L/h), k (linear addition constant, L/h 2), and t (reaction time, h). In the continuous process, the yield of conversion of sucrose (Y) was superior to 70% under the following conditions: dilution rate = 0.33 h−1, total duration of 15 h, pH 5.0, 37 °C and initial sucrose concentration of 64 g/L (Y = 92%), 100 g/L (Y = 83%), or 150 g/L (Y = 76%).
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The authors acknowledge the financial grant from CNPq (Conselho Nacional de Pesquisa) and FAPESP (Fundação de Amparo à Pesquisa do Estado de São Paulo) and thank Philip Barsanti for revising the manuscript.
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Taraboulsi, F.A., Tomotani, E.J. & Vitolo, M. Multienzymatic Sucrose Conversion into Fructose and Gluconic Acid through Fed-Batch and Membrane-Continuous Processes. Appl Biochem Biotechnol 165, 1708–1724 (2011). https://doi.org/10.1007/s12010-011-9389-6
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DOI: https://doi.org/10.1007/s12010-011-9389-6