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- W2885900367 abstract "Continuous (flow) reactors have drawn a wave of renewed interest in biocatalysis. Many studies find that the flow reactor offers enhanced conversion efficiency. What the reported reaction intensification actually consists in, however, often remains obscure. Here, a canonical microreactor design for heterogeneously catalyzed continuous biotransformations, featuring flow microchannels that contain the enzyme immobilized on their wall surface are examined. Glycosylations by sucrose phosphorylase are used to assess the potential for reaction intensification due to microscale effects. Key variables are identified, and their corresponding relationship equations, to describe, and optimize, the interplay between reaction characteristics, microchannel geometry and reactor operation. The maximum space-time-yield (STY_max) scales directly with the enzyme activity immobilized on the available wall surface. Timescale analysis, comparing the characteristic times of reaction (τreac) and diffusion (τdiff) to the mean residence time (τres), reveals operational conditions for optimum reactor output. Theoretical insight into determinants of microreactor performance is applied to biocatalytic syntheses of α-d-glucose 1-phosphate and α-glucosyl glycerol. Process boundaries for enzyme showing, respectively, high (80 U mg−1) and low (4 U mg−1) specific activities are thus established and options for process design revealed. Opportunities, and limitations, of the application of principles of microscale flow chemistry to biocatalytic transformations are made evident." @default.
- W2885900367 created "2018-08-22" @default.
- W2885900367 creator A5051203357 @default.
- W2885900367 creator A5052599211 @default.
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- W2885900367 date "2018-08-28" @default.
- W2885900367 modified "2023-10-16" @default.
- W2885900367 title "Demystifying the Flow: Biocatalytic Reaction Intensification in Microstructured Enzyme Reactors" @default.
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- W2885900367 doi "https://doi.org/10.1002/biot.201800244" @default.
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