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Immobilized laccase reactors for process intensification: Kinetic comparison of batch and continuous-flow systems.

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Title: Immobilized laccase reactors for process intensification: Kinetic comparison of batch and continuous-flow systems.
Authors: Yamaguchi, Hiroshi1,2,3 (AUTHOR) yamahiro@tokai.ac.jp
Source: Journal of Biotechnology. Sep2026, Vol. 417, p133-140. 8p.
Subjects: Continuous flow reactors, Immobilized enzymes, Activation energy, Enzyme kinetics, Batch reactors, Color removal (Sewage purification), Process optimization
Abstract: Immobilized enzyme reactors operated under flow conditions are promising for process intensification in biocatalytic transformations; however, systematic kinetic comparisons between batch and flow configurations remain limited. Using acetosyringone-mediated malachite green (MG) decolorization as a model reaction, the kinetic behavior of an immobilized laccase system was compared between batch and flow modes. Laccase immobilized on an amino-polyethylene glycol–dimethylacrylamide copolymer resin was applied in batch and packed-tube flow reactors, and MG decolorization was monitored spectrophotometrically. The reaction behavior was analyzed using a pseudo-first-order kinetic model, and rate constants and activation energies were determined for laccase solution, immobilized laccase in batch, and immobilized laccase in flow systems. The packed-bed flow reactor exhibited higher reaction rates, achieving approximately 70% MG decolorization within 6.28 min compared with about 78% conversion after 60 min in batch operation. Arrhenius analysis revealed a higher apparent activation energy in the flow system, indicating stronger temperature dependence under continuous operation. The immobilized enzyme was reused in repeated batch and flow runs without noticeable performance loss. Overall, these results demonstrate process intensification under continuous-flow operation and provide a quantitative kinetic framework for comparing batch and flow immobilized enzyme systems. • Systematic kinetic comparison across solution, batch, and flow reactor systems. • Pseudo-first-order analysis enabled quantitative evaluation of reaction rates. • Packed-bed flow reactor achieved significant process intensification. • Apparent activation energies highlighted distinct temperature dependence. [ABSTRACT FROM AUTHOR]
Copyright of Journal of Biotechnology is the property of Elsevier B.V. and its content may not be copied or emailed to multiple sites without the copyright holder's express written permission. Additionally, content may not be used with any artificial intelligence tools or machine learning technologies. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)
Database: Engineering Source
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DbLabel: Engineering Source
An: 195144489
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PubTypeId: academicJournal
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  Label: Title
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  Data: Immobilized laccase reactors for process intensification: Kinetic comparison of batch and continuous-flow systems.
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  Data: <searchLink fieldCode="AR" term="%22Yamaguchi%2C+Hiroshi%22">Yamaguchi, Hiroshi</searchLink><relatesTo>1,2,3</relatesTo> (AUTHOR)<i> yamahiro@tokai.ac.jp</i>
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  Data: <searchLink fieldCode="JN" term="%22Journal+of+Biotechnology%22">Journal of Biotechnology</searchLink>. Sep2026, Vol. 417, p133-140. 8p.
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  Data: <searchLink fieldCode="DE" term="%22Continuous+flow+reactors%22">Continuous flow reactors</searchLink><br /><searchLink fieldCode="DE" term="%22Immobilized+enzymes%22">Immobilized enzymes</searchLink><br /><searchLink fieldCode="DE" term="%22Activation+energy%22">Activation energy</searchLink><br /><searchLink fieldCode="DE" term="%22Enzyme+kinetics%22">Enzyme kinetics</searchLink><br /><searchLink fieldCode="DE" term="%22Batch+reactors%22">Batch reactors</searchLink><br /><searchLink fieldCode="DE" term="%22Color+removal+%28Sewage+purification%29%22">Color removal (Sewage purification)</searchLink><br /><searchLink fieldCode="DE" term="%22Process+optimization%22">Process optimization</searchLink>
– Name: Abstract
  Label: Abstract
  Group: Ab
  Data: Immobilized enzyme reactors operated under flow conditions are promising for process intensification in biocatalytic transformations; however, systematic kinetic comparisons between batch and flow configurations remain limited. Using acetosyringone-mediated malachite green (MG) decolorization as a model reaction, the kinetic behavior of an immobilized laccase system was compared between batch and flow modes. Laccase immobilized on an amino-polyethylene glycol–dimethylacrylamide copolymer resin was applied in batch and packed-tube flow reactors, and MG decolorization was monitored spectrophotometrically. The reaction behavior was analyzed using a pseudo-first-order kinetic model, and rate constants and activation energies were determined for laccase solution, immobilized laccase in batch, and immobilized laccase in flow systems. The packed-bed flow reactor exhibited higher reaction rates, achieving approximately 70% MG decolorization within 6.28 min compared with about 78% conversion after 60 min in batch operation. Arrhenius analysis revealed a higher apparent activation energy in the flow system, indicating stronger temperature dependence under continuous operation. The immobilized enzyme was reused in repeated batch and flow runs without noticeable performance loss. Overall, these results demonstrate process intensification under continuous-flow operation and provide a quantitative kinetic framework for comparing batch and flow immobilized enzyme systems. • Systematic kinetic comparison across solution, batch, and flow reactor systems. • Pseudo-first-order analysis enabled quantitative evaluation of reaction rates. • Packed-bed flow reactor achieved significant process intensification. • Apparent activation energies highlighted distinct temperature dependence. [ABSTRACT FROM AUTHOR]
– Name: AbstractSuppliedCopyright
  Label:
  Group: Ab
  Data: <i>Copyright of Journal of Biotechnology is the property of Elsevier B.V. and its content may not be copied or emailed to multiple sites without the copyright holder's express written permission. Additionally, content may not be used with any artificial intelligence tools or machine learning technologies. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract.</i> (Copyright applies to all Abstracts.)
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      – Type: doi
        Value: 10.1016/j.jbiotec.2026.06.005
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      – Code: eng
        Text: English
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        PageCount: 8
        StartPage: 133
    Subjects:
      – SubjectFull: Continuous flow reactors
        Type: general
      – SubjectFull: Immobilized enzymes
        Type: general
      – SubjectFull: Activation energy
        Type: general
      – SubjectFull: Enzyme kinetics
        Type: general
      – SubjectFull: Batch reactors
        Type: general
      – SubjectFull: Color removal (Sewage purification)
        Type: general
      – SubjectFull: Process optimization
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      – TitleFull: Immobilized laccase reactors for process intensification: Kinetic comparison of batch and continuous-flow systems.
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            – D: 01
              M: 09
              Text: Sep2026
              Type: published
              Y: 2026
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              Value: 417
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