Electrochemical Sensing Platform Based on Carbon Dots for the Simultaneous Determination of Theophylline and Caffeine in Tea

Di Matteo, Paola; Trani, Alessandro; Bortolami, Martina; Feroci, Marta; Petrucci, Rita; Curulli, Antonella

doi:10.3390/s23187731

Cited by 7 publications

(1 citation statement)

References 65 publications

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“…4(A). Diffusion control over the electrochemical processes on the suggested electrode is demonstrated by the linear connection between the oxidation current and the square root of the scan rates (Di Matteo et al 2023). As scan rates are gradually increased, the oxidation peak potential (E pa )…”

Section: Features Of F-mwcnts/gce Electrocatalytic Combination For Ca...mentioning

confidence: 99%

Electrochemically active via f-MWCNTs for finding caffeine in beverages

Chen,

Ye,

et al. 2024

Preprint

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In several industries, such as food, pharmaceuticals, and environmental protection, the identification of analytes at extremely low concentrations is essential. In the food standardization field, electrochemical sensors are one of the key technologies for determining food quality and making medical diagnoses. Sensor design is dependent on electrochemically active characteristics of the selected material to alter the electrode. For rapid and accurate detection of caffeine (CAF), we technologically built an electrochemical sensor based on functionalized multi-walled carbon nanotubes (f-MWCNTs/GCE). The functionalized material was characterized by XRD, Raman, FT-IR, FE-SEM, HR-TEM, EDX and the mapping of elements. The component’s natural virtue and cooperative connection demonstrate enhanced electrocatalytic activity, as evidenced by the component’s decreased overpotential, increased electron transfer, improved sensing and selectivity, broad linear range, and low detection limit toward the selected analyte. CAF was found to have broad linear ranges of concentrations 5.3 to 166 µM, with detection limits of 0.043 µM. 9.13 µA. µm− 1 is the designed electrode's sensitivity. High selectivity, stability, repeatability and reproducibility were also demonstrated by the electrode. Crucially, the investigation was effective in identifying and measuring the aforementioned element in authentic specimens. In addition, the sensor demonstrated efficacy in detecting CAF in drinks, yielding good recoveries ranging from 96.4–102.4%. This suggests that the sensor holds desirable potential for identifying CAF real substances.

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Section: Features Of F-mwcnts/gce Electrocatalytic Combination For Ca...mentioning

confidence: 99%

Electrochemically active via f-MWCNTs for finding caffeine in beverages

Chen,

Ye,

et al. 2024

Preprint

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Dietary factors and risk for adverse pregnancy outcome: A Mendelian randomization analysis

Mu,

Liu,

Wang

et al. 2024

Food Science & Nutrition

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This study aims to explore the link between dietary habits and adverse pregnancy outcomes (APOs), including preterm birth (PB), preeclampsia (PE), gestational diabetes mellitus (GDM), fetal growth restriction (FGR), and spontaneous abortion (SA) through two‐sample Mendelian randomization (MR). We accessed publicly available genome‐wide association studies' (GWAS) summary statistics for dietary habits and APOs, respectively. We used five MR methods to synthesize MR estimates across genetic instruments. To ensure the robustness of our results, we assessed heterogeneity, and horizontal pleiotropy, and conducted sensitivity analyses. The primary analysis showed that intake of dried fruit (odds ratio (OR), 0.522; 95% confidence interval (CI): 0.291–0.935) and fresh fruit (OR, 0.487; 95% CI: 0.247–0.960) was related to a decreased risk of PB. While intake of tea (OR, 1.602; 95% CI: 1.069–2.403) and poultry (OR, 6.314; 95% CI: 1.266–31.488) was linked to a heightened risk of PB. Cheese intake was a protective factor against PE (OR, 0.557; 95% CI: 0.337–0.920) and GDM (OR, 0.391; 95% CI: 0.270–0.565). Intake of lamb/mutton had a negative relationship with PE (OR, 0.372; 95%CI: 0.145–0.954), whereas oily fish consumption showed a positive relationship with FGR (OR, 2.005; 95% CI: 1.205–3.339). However, after correction using the false discovery rate (FDR) analysis, only the intake of cheese showed a significant causal relationship with GDM (p < .001). Our study preliminarily found that cheese intake was significantly associated with the lower risk of GDM, while others were suggestively associated with the risk of APOs. Well‐designed prospective studies are still needed to confirm our findings in the future.

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