Curcumin Electroanalysis at a Disposable Graphite Electrode

Biosensors, Год журнала: 2025, Номер 15(3), С. 137 - 137

Опубликована: Фев. 23, 2025

Curcumin (CU, turmeric), a polyphenolic phytochemical that is largely used as food spice, has benefits for human health, which have led to increased interest in its therapeutic applications and analysis from different matrices. The two guaiacol moieties of CU are responsible antioxidant properties allow voltammetric quantification. Cyclic differential pulse voltammetry (DPV) investigations at single-use pencil graphite electrode (PGE) emphasized complex pH-dependent processes, involving an equal number protons electrons. Theoretical calculations predicted folded geometry the β-diketone conformers, interact with PGE surface, exposing electroactive only one aromatic ring. Gibbs energy variations structures involved electro-oxidation theoretical electrochemical potential values were calculated. CU’s DPV cathodic peak intensity recorded HB-type 0.05 mol × L−1 H2SO4 varied linearly range 5.00 10−8–5.00 10−6 CU. method’s detection quantification limits 2.12 10−8 6.42 L−1, respectively. practical applicability developed method, successfully tested by assessment dietary supplements, provided recovery 99.28 ± 2.04%.

Язык: Английский

Development of a Smartphone Integrated 3D-printed Point of Care Platform for Sensitive Detection of Bilirubin

Talanta, Год журнала: 2024, Номер 286, С. 127430 - 127430

Опубликована: Дек. 19, 2024

Язык: Английский