J 2019

Influence of a polymer membrane on the electrochemical determination of insulin in nanomodified screen printed carbon electrodes

SISOLAKOVA, Ivana; Jana HOVANCOVA; Renata ORINAKOVA; Andrej ORIŇÁK; Libuše TRNKOVÁ et. al.

Základní údaje

Originální název

Influence of a polymer membrane on the electrochemical determination of insulin in nanomodified screen printed carbon electrodes

Autoři

SISOLAKOVA, Ivana; Jana HOVANCOVA; Renata ORINAKOVA (garant); Andrej ORIŇÁK (703 Slovensko); Libuše TRNKOVÁ (203 Česká republika, domácí); Daniel Rueda GARCIA a Jozef RADONAK

Vydání

Bioelectrochemistry, SWITZERLAND, Elsevier, 2019, 1567-5394

Další údaje

Jazyk

angličtina

Typ výsledku

Článek v odborném periodiku

Obor

10608 Biochemistry and molecular biology

Stát vydavatele

Švýcarsko

Utajení

není předmětem státního či obchodního tajemství

Odkazy

Impakt faktor

Impact factor: 4.722

Kód RIV

RIV/00216224:14310/19:00113430

Organizační jednotka

Přírodovědecká fakulta

UT WoS

000500037700002

EID Scopus

2-s2.0-85068461942

Klíčová slova anglicky

Insulin determination; Screen printed carbon electrodes; Polymer membrane; Nickel oxide nanoparticles; Chitosan

Štítky

Příznaky

Mezinárodní význam, Recenzováno
Změněno: 31. 3. 2020 21:40, Mgr. Marie Novosadová Šípková, DiS.

Anotace

V originále

Diabetes mellitus can be considered one of the most widespread diseases globally. Hence, the diabetes research is currently focused on developing an effective, low-cost sensor having high stability and suitable analytical characteristics. Screen printed carbon electrodes (SPCEs) embody ideal candidates for insulin determination due to the small area of the working electrode eliminating the solution volume required for the given purpose. Modification of SPCEs by using nanoparticles resulted in an increase of the working electrode surface area and formation of a higher number of active species. The aim of this paper is to examine the impact of a chitosan membrane on the electrochemical determination of insulin on NiO nanoparticles (NiONPs) and multi-walled nanotube (MWCNTs) modified SPCE (NiONPs/MWCNTs/SPCE). This study is primarily conceived to compare the analytical characteristics and stability of NiONPs/chitosan-MWCNTs/SPCE and NiONPs/MWCNTs/SPCE. An electrode modified with chitosan displays a wider linear range, one of 0.25 mu M - 5 mu M (R-2 0.997); a lower limit of detection, 94 nM; a high sensitivity (0.021 mu A/mu M) and better stability than that of an electrode without chitosan. According to these characteristics, the polymer is considered a necessary compound of the electrochemical insulin sensor, improving the sensor's analytical characteristics.