Electrochemical characteristics of a gold nanoparticle-modified controlled enzyme-electrode contact junction electrode.

In this study, we postulate that the structural change of the enzyme would be reduced and the electrochemical performance improved by making the contact area between the enzyme and the electrode extremely small and adsorbing it as a point. Therefore, we aimed to develop a high-power biodevice that retains enzyme structure and activity by interposing gold nanoparticles (AuNPs) between the enzyme and the electrode. The enzymatic and electrochemical properties of pyrroloquinoline quinone-dependent glucose dehydrogenase adsorbed on AuNPs of 5-40 nm diameter were investigated. We found that the characteristics differed among the particles, and the enzyme adsorbed on 20 nm AuNPs showed the best electrochemical characteristics. PMID: 33576902 [PubMed - as supplied by publisher]
Source: Biotechnology Letters - Category: Biotechnology Authors: Tags: Biotechnol Lett Source Type: research