Amperometric biosensors for NADH based on hyperbranched dendritic ferrocene polymers and Pt nanoparticles

Alcohol oxidase protein mediated in-situ synthesized and stabilized gold nanoparticles for developing amperometric alcohol biosensor

“…The operational and storage stability of the constructed biosensor are comparable to and even improved than many of the reported prominent biosensors. The dynamic detection range of the biosensor was far wider than most of the alcohol biosensors reported so far except an ADH-based biosensor reported recently (Jimenez et al 2014). However, the lowest detection concentration in the dynamic range obtained by us (0.01 mM) is far lower than the aforesaid ADH-based biosensor (0.9 mM).…”

“…A comparative analysis on the performance of various prominent alcohol biosensors reported over the last decade was carried out (Patel et al, 2001;de parda et al, 2003;Hasunuma et al, 2004;Smutok et al, 2006;Tsai et al, 2007;Gouveia-Caridade et al, 2008;Manso et al, 2008;Lee and Tsai, 2009;Das and Goswami, 2013;Jimenez et al, 2014;Soylemez et al, 2014;Chinnadayyala et al, 2014) (Supplementary table 3). The operational and storage stability of the constructed biosensor are comparable to and even improved than many of the reported prominent biosensors.…”

Single-walled carbon nanotubes covalently functionalized with polytyrosine: A new material for the development of NADH-based biosensors

“…Moreover, the detection limit obtained with our biosensor is lower than most of the ones reported in Table 2. In fact, our detection limits are lower than that that reported for biosensors based on non-covalently functionalized carbon nanotubes with 1,10-phenanthroline-5,6-dione (300 µM) , diphenylalanine peptide/carbon nanotube composite (12 µM) , nickel oxide nanoparticles (6.4 µM) , reduced graphene oxide functionalized with polydopamine and gold nanoparticles (88 µM) , screen-printed electrodes modified with a graphitized mesoporous carbon/chitosan/meldola`s blue/NAD + nanobiocomposite (80 µM) , platinum nanoparticles/dendritic hyperbranched carboxilane polymer nanobiocomposite (451.6 µM) (Jiménez et al, 2014); and comparable to that obtained for electrogenerated NAD + oxidation product immobilized onto carbon nanotubes/ionic liquid nanocomposite ( The GCE/SWCNT-Polytyr(oxidized)/ADH/Naf biosensor was used to quantify the content of ethanol in commercial alcoholic drinks. The concentrations of ethanol in the different beverages are the following: beer 1 (5.0 ± 0.1) %v/v, beer 2 (4.9 ± 0.1) %v/v, mixed drink (6.6 ± 0.2) %v/v, and white wine (13.6 ± 0.2) %v/v, demonstrating an excellent correlation with the values reported by the suppliers (4.9, 5.0, 6.5, and 13.5 % v/v, respectively).…”

The Redox Functions of Metallodendrimers

“…with less positive redox potential than ferrocene for amperometric bienzyme electrodes with hoseradish peroxidase and glucose oxidase. Hydrogen peroxide produced by the oxidase during the enzymatic reaction was determined, and these biosensors were shown to resist to interferences [119,120] The bio-electrocatalytic properties of new glucose bio-sensors were also investigated by the Casado group using carbosilane dendrimers with interacting ferrocene centers [121], and very recently amperometric bio-sensors were designed for NADH based on hyperbranched dendritic Fc polymers and Pt nanoparticles [4,122].…”