Protein-based (bio)materials: a way toward high-performance graphene enzymatic biosensors
Silvestri A, Wang F, Feng X, Cortajarena AL, Prato M (2022)
Publication Type: Journal article
Publication year: 2022
Journal
Book Volume: 10
Pages Range: 5466-5473
Journal Issue: 14
DOI: 10.1039/d2tc00483f
Abstract
Enzymes are ideal receptors for biosensors since they offer excellent selectivity and high catalytic activity. However, once removed from their native environment, enzymes present a short lifespan determining a huge drawback for their application in bio-analytical systems. The use of appropriate immobilization matrices is an effective strategy to preserve enzymatic activity. In this work, an enzymatic amperometric biosensor is designed by entrapping lactate oxidase into a protein-based immobilization matrix, formed by the self-assembly of engineered repeat proteins. Electrochemically exfoliated graphene, functionalized with cobalt phthalocyanine, is employed as electroactive material and transducer of the sensor. Due to the extraordinary enzymatic stabilization provided by the engineered protein film, the device sensitivity is preserved for more than 6 months at room temperature. Furthermore, the presented biosensor can detect lactate with outstanding performance in terms of sensitivity, repeatability, and reproducibility.
Involved external institutions
Spain (ES)
Germany (DE)How to cite
APA:
Silvestri, A., Wang, F., Feng, X., Cortajarena, A.L., & Prato, M. (2022). Protein-based (bio)materials: a way toward high-performance graphene enzymatic biosensors. Journal of Materials Chemistry C, 10(14), 5466-5473. https://doi.org/10.1039/d2tc00483f
MLA:
Silvestri, Alessandro, et al. "Protein-based (bio)materials: a way toward high-performance graphene enzymatic biosensors." Journal of Materials Chemistry C 10.14 (2022): 5466-5473.
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