Solvent‐Free Photobiocatalytic Hydroxylation of Cyclohexane

Markus Hobisch, Morten Martinus Cornelis Harald van Schie, Jinhyun Kim, Kasper Røjkjær Andersen, Miguel Alcalde, Robert Kourist, Chan Beum Park, Frank Hollmann, Selin Kara*

*Corresponding author af dette arbejde

Publikation: Bidrag til tidsskrift/Konferencebidrag i tidsskrift /Bidrag til avisTidsskriftartikelForskningpeer review

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Abstract

The use of neat reaction media, that is the avoidance of additional solvents, is the simplest and the most efficient approach to follow in biocatalysis. Here, we show that unspecific peroxygenase from Agrocybe aegerita (AaeUPO) can hydroxylate the neat model substrate cyclohexane. H 2O 2 was photocatalytically generated in situ by nitrogen-doped carbon nanodots (N−CNDs) and UV LED illumination. AaeUPO entrapment in alginate beads increased enzyme stability and facilitated the reaction in neat cyclohexane. N−CNDs absorption in beads containing AaeUPO created a 2-in-1 heterogeneous photobiocatalyst that was active for up to seven days under reaction conditions and produced cyclohexanol, 2.5 mM. To increase productivity, the bead size and the photocatalyst-to-enzyme ratio have been identified as promising targets for optimisation.

OriginalsprogEngelsk
TidsskriftChemCatChem
Vol/bind12
Nummer16
Sider (fra-til)4009-4013
Antal sider5
ISSN1867-3880
DOI
StatusUdgivet - aug. 2020

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