Fluorographene and Graphane as an Excellent Platform for Enzyme Biocatalysis. Issue 63 (18th October 2018)

• Record Type: Journal Article
• Authors: Hermanová, Soňa; Bouša, Daniel; Mazánek, Vlastimil; Sedmidubský, David; Plutnar, Jan; Pumera, Martin; Sofer, Zdeněk
• Is Part Of: Chemistry. Volume 24:Issue 63(2018)
• Page Start: 16833
• Page End: 16839
• Publication Date: 2018-10-18
• Subjects: biocatalysis -- enzyme -- graphene; Chemistry -- Periodicals; 540
• DOI: 10.1002/chem.201803397
• Languages: English
• ISSNs: 0947-6539

Abstract

Abstract: The application of enzymes is a crucial issue for current biotechnological application in pharmaceutical, as well as food and cosmetic industry. Effective platforms for enzyme immobilization are necessary for their industrial use in various biosynthesis procedures. Such platforms must provide high yield of immobilization and retain high activity at various conditions for their large‐scale applications. Graphene derivatives such as hydrogenated graphene (graphane) and fluorographene can be applied for enzyme immobilization with close to 100 % yield that can result to activities of the composites significantly exceeding activity of free enzymes. The hydrophobic properties of graphene stoichiometric derivatives allowed for excellent non‐covalent bonding of enzymes and their use in various organic solvents. The immobilized enzymes retain their high activities even at elevated temperatures. These findings show excellent application potential of enzyme biocatalysts immobilized on graphene stoichiometric derivatives. Abstract : The immobilization of a lipase enzyme onto hydrophobic graphene‐based derivatives (fluorinated and hydrogenated graphenes, see graphic) has been investigated. The immobilized enzymes exhibit significantly higher activity, thermal stability and resistance to organic solvents compared to unimmobilized enzymes. Hydrophobic graphene‐based substrates could potential widen the application range of enzymes in biocatalysis.