Bitte benutzen Sie diese Referenz, um auf diese Ressource zu verweisen:
doi:10.22028/D291-37083
Titel: | The Impact of the Functional Layer Composition of Glucose Test-Strips on the Stability of Electrochemical Response |
VerfasserIn: | Zolotukhina, Ekaterina V. Gerasimova, Ekaterina V. Sorokin, Vladislav V. Levchenko, Maria G. Freiman, Alisa S. Silina, Yuliya E. |
Sprache: | Englisch |
Titel: | Chemosensors |
Bandnummer: | 10 |
Heft: | 8 |
Verlag/Plattform: | MDPI |
Erscheinungsjahr: | 2022 |
Freie Schlagwörter: | glucose test strips alginate RedOx mediator stability functional layer analytical performance |
DDC-Sachgruppe: | 500 Naturwissenschaften |
Dokumenttyp: | Journalartikel / Zeitschriftenartikel |
Abstract: | Herein, the impact of the chemical stability of RedOx mediator ferricyanide, K3 [Fe(CN)6 ] (FC), a type of buffer solution used for bioreceptor preparation, gel composition (carboxymethylcellulose, CMC, Aerosile, AS, and alginate, ALG) on the long term stability of glucose test-strips and their analytical performance was examined. By simple addition of ALG to the functional gel aiming to improve its viscosity, we managed to enhance the sensitivity of conventional CMC-containing amperometric glucose test-strips from 3.3 µA/mM to 3.9 µA/mM and extend their shelf life from 8 months to 1.7 years. Moreover, during the course of investigations, it was revealed that the activity of enzyme in dependence with the used buffer did not linearly correlate with its activity in a dried functional layer, and the entire long-term electrochemical signal of glucose test-strips was determined by RedOx mediator FC chemical stability. The most stable and sensitive test-strips were obtained by the screen-printing approach from a gel containing 24 mg/mL GOx prepared in citrate buffer with pH 6, 200 mg/mL of FC and 10 mg/mL of CMC supplemented with 25 mg/mL of ALG. |
DOI der Erstveröffentlichung: | 10.3390/chemosensors10080298 |
Link zu diesem Datensatz: | urn:nbn:de:bsz:291--ds-370837 hdl:20.500.11880/33664 http://dx.doi.org/10.22028/D291-37083 |
ISSN: | 2227-9040 |
Datum des Eintrags: | 26-Aug-2022 |
Bezeichnung des in Beziehung stehenden Objekts: | Supplementary Materials |
In Beziehung stehendes Objekt: | https://www.mdpi.com/article/10.3390/chemosensors10080298/s1 |
Fakultät: | NT - Naturwissenschaftlich- Technische Fakultät |
Fachrichtung: | NT - Biowissenschaften |
Professur: | NT - Prof. Dr. Bruce Morgan |
Sammlung: | SciDok - Der Wissenschaftsserver der Universität des Saarlandes |
Dateien zu diesem Datensatz:
Datei | Beschreibung | Größe | Format | |
---|---|---|---|---|
chemosensors-10-00298-v2.pdf | 1,7 MB | Adobe PDF | Öffnen/Anzeigen |
Diese Ressource wurde unter folgender Copyright-Bestimmung veröffentlicht: Lizenz von Creative Commons