A novel glucose biosensor using bi-enzyme incorporated with peptide nanotubes

Preparation of Ni(OH)2 nanosheets on Ni foam via a direct precipitation method for a highly sensitive non-enzymatic glucose sensor

“…Curve B shows the relationship between the amperometric response and glucose concentration at the range of 0.1 mM to 2.5 mM, with a sensitivity value of 1097 μAmM -1 cm -2 . The sensitivity, detection limit, linear range, and response time of the as-prepared Ni(OH) 2 nanosheets/Ni electrode were compared with previously reported typical non-enzymatic and enzymatic methods for glucose determination, which are listed in Table 1 [16,[25][26][27][28][29][30][31]. Our Ni(OH) 2 nanosheets/Ni electrode clearly exhibited much higher sensitivity, comparable linear range, lower detection limit, and shorter response time compared with the previously reported glucose sensors using NiO/CILE (NiO-modified carbon paste electrode), Ni/multi-walled carbon nanotubes, Ni(OH) 2 and graphene nanoparticles modified glassy carbon electrode, graphene oxide, NiO nanofibers, and Nafion-modified glassy carbon electrode.…”

Peptide nanostructures in biomedical technology

“…Previously carbon nanotubes and electrically conducting organic polymers such as polyaniline have been used for this purpose. Park et al showed that encapsulation of enzymes in PNTs enhances enzyme activity and longevity, and the PNT‐encapsulated enzymes were successfully used as receptors for a glucose biosensor . It is postulated that the enhancement of enzyme activity and longevity is possibly owed to the shape and electrical conductivity of PNTs as well as their biocompatibility.…”

“…Park et al showed that encapsulation of enzymes in PNTs enhances enzyme activity and longevity, and the PNT-encapsulated enzymes were successfully used as receptors for a glucose biosensor. 59 It is postulated that the enhancement of enzyme activity and longevity is possibly owed to the shape and electrical conductivity of PNTs as well as their biocompatibility. Yemini et al suggested that electron transfer between spatially aligned aromatic structure induces the conductivity of diphenylalanine PNTs.…”

Biosensors for Determination of the Most Common Carbohydrates

“…Існують біосенсори, біоселективна мембрана яких містить кілька ферментів, як приклад, пероксидаза хріну та ГОД на поверхні золотого електрода [14]. Пероксидаза хріну була інкапсульована пептидними нанотрубками з метою підвищення активності і стабільності фермента.…”