2024
Selective and sensitive determination of phenolic compounds using carbon screen printing electrodes modified with reduced graphene oxide and silver nanoparticles
CHAKKARAPANI, Lakshmi Devi; Zuzana BYTESNIKOVA; Lukas RICHTERA a Martin BRANDLZákladní údaje
Originální název
Selective and sensitive determination of phenolic compounds using carbon screen printing electrodes modified with reduced graphene oxide and silver nanoparticles
Autoři
CHAKKARAPANI, Lakshmi Devi; Zuzana BYTESNIKOVA; Lukas RICHTERA a Martin BRANDL
Vydání
Applied Materials Today, Amsterdam, Elsevier, 2024, 2352-9407
Další údaje
Jazyk
angličtina
Typ výsledku
Článek v odborném periodiku
Obor
10406 Analytical chemistry
Stát vydavatele
Nizozemské království
Utajení
není předmětem státního či obchodního tajemství
Odkazy
Impakt faktor
Impact factor: 6.900
Označené pro přenos do RIV
Ano
Kód RIV
RIV/00216224:90242/24:00138498
Organizační jednotka
CIISB III
UT WoS
EID Scopus
Klíčová slova anglicky
Nanoparticles; Screen -printed electrodes; Butylated hydroxyanisole; Reduced graphene oxide; Vanillin
Příznaky
Mezinárodní význam, Recenzováno
Změněno: 19. 3. 2025 17:01, Mgr. Eva Dubská
Anotace
V originále
Butylated hydroxyanisole (BHA) and vanillin (VA) are the well-known phenolic compounds often used as preservatives in various foods and beverages. BHA is a safe additive whose concentration in food should not exceed 0.02 %. VA is used as a flavoring agent in foods, but the maximum allowable amount for VA is limited to 7 mg/ 100 g. However, elevated levels of BHA and VA can lead to severe health issues in the human body. To ensure reliable quality control, the food industry must accurately determine the BHA and VA content in food. In this work, we developed an electrochemical sensor for the detection of BHA and VA using a screen-printed electrode (SPE) modified with reduced graphene oxide and silver nanoparticles (RGO-Ag NPs). The SPE modified with RGO-Ag NPs showed an oxidation potential for BHA of 0.34 V and 0.62 V for VA in phosphate buffer solution (0.1 M PBS, pH 7.4) at a scan rate of 50 mV/s. In contrast, the unmodified SPE shows no significant current and oxidation potential response of BHA and VA under the same experimental conditions. (Cyclic voltammetry (CV) measurements for BHA ranged from 9.9 mu M to 239.25 mu M, while differential pulse voltammetry (DPV) measurements of BHA provided a linear calibration from 0.49 mu M to 3.67 mu M with a lower detection limit of 0.16 mu M (S/N = 3). For VA, CV measurements covered a range from 82.6 mu M to 242.4 mu M, and DPV measurements displayed a linear calibration from 1.47 mu M to 12.79 mu M with a detection limit of 0.15 mu M (S/N = 3).
Návaznosti
| 90242, velká výzkumná infrastruktura |
|