Pregled bibliografske jedinice broj: 602286
Direct potentiometric determination of starch using a platinum redox sensor
Direct potentiometric determination of starch using a platinum redox sensor // Food chemistry, 138 (2013), 1; 9-12 doi:10.1016/j.foodchem.2012.10.044 (međunarodna recenzija, članak, znanstveni)
CROSBI ID: 602286 Za ispravke kontaktirajte CROSBI podršku putem web obrasca
Naslov
Direct potentiometric determination of starch using a platinum redox sensor
Autori
Sakač, Nikola ; Sak-Bosnar, Milan ; Horvat, Marija
Izvornik
Food chemistry (0308-8146) 138
(2013), 1;
9-12
Vrsta, podvrsta i kategorija rada
Radovi u časopisima, članak, znanstveni
Ključne riječi
starch; potentiometric sensor; direct potentiometry; triiodide
Sažetak
Here, we describe the development of a platinum redox sensor for the direct potentiometric quantification of starch in solution. The sensor measures the decrease in free triiodide ion after it complexes with starch to form a starch-triiodide complex. This decrease was, therefore, correlated with starch concentration, and the composition and stability of the potassium triiodide solution were optimized. The starch-triiodide complex was characterized potentiometrically at variable starch and triiodide concentrations. We also propose a response mechanism for the platinum redox sensor towards starch and an appropriate theoretical model. The optimized method exhibited satisfactory accuracy and precision and was in good agreement with a standard spectrophotometric method. The sensor was tested over a range of 0.4-9 mg starch, with recoveries ranging from 97.8 % to 103.4 % and a detection limit of 0.01 mg starch.
Izvorni jezik
Engleski
Znanstvena područja
Kemija, Kemijsko inženjerstvo, Prehrambena tehnologija
POVEZANOST RADA
Ustanove:
Sveučilište u Osijeku - Odjel za kemiju
Citiraj ovu publikaciju:
Časopis indeksira:
- Current Contents Connect (CCC)
- Web of Science Core Collection (WoSCC)
- Science Citation Index Expanded (SCI-EXP)
- SCI-EXP, SSCI i/ili A&HCI
- Scopus
- MEDLINE
