Square wave and differential pulse voltammetric methods for the analysis of olivetol at gold electrode

Bagalkoti, Jyoti T.; Pattar, Vijay P.; Nandibewoor, Sharanappa T.

doi:10.5599/jese.382

Cited by 4 publications

(5 citation statements)

References 17 publications

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“…The existing reported electrochemical detection of olivetol was reported by S.T. Nandibewoor in 2017 [ 35 ]. Some of the parameters in the method were compared in Table 1 .…”

Section: Resultsmentioning

confidence: 99%

Electrochemical Detection of Olivetol Based on Poly(L-Serine) Film Layered Copper Oxide Modified Carbon Paste Electrode (p-L-Serine/CuO/CPE)

et al. 2022

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Olivetol is an important polyphenol compound and intermediate in the synthesis of cannabinoids possessing many types of biological activities. A facile electrochemical sensor for olivetol was fabricated based on p-L-serine, and copper oxide (CuO) nanoparticles modified carbon paste electrode (p-L-serine/CuO/CPE). The proposed p-L-serine/CuO/CPE was applied to the electrochemical detection of olivetol by cyclic voltammetry (CV) and differential pulse voltammetric (DPV). Through the characterizations of materials and modified electrodes, the p-L-serine/CuO/CPE exhibited enhanced electrochemical signals for olivetol compared to bare CPE and CuO/CPE in both CV and DPV methods. Under the optimized conditions, the proposed p-L-serine/CuO/CPE showed a good quantitative analysis ability and a wide analysis range from 20 to 100 μmol L−1 of olivetol with a limit of detection of 1.04 μmol L−1. Based on the reproducibility, repeatability, and stability exhibited by this fabricated sensor and the cheap and accessible raw materials, the p-L-serine/CuO/CPE became a novel determination choice for olivetol in the electrochemical method with the advantages of being cost-effective and convenient.

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“…The existing reported electrochemical detection of olivetol was reported by S.T. Nandibewoor in 2017 [ 35 ]. Some of the parameters in the method were compared in Table 1 .…”

Section: Resultsmentioning

confidence: 99%

Electrochemical Detection of Olivetol Based on Poly(L-Serine) Film Layered Copper Oxide Modified Carbon Paste Electrode (p-L-Serine/CuO/CPE)

et al. 2022

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“…where s is the standard deviation of the intercept and m is the slope of the calibration curve (n = 3) [44]. The linear range was considered from zero to the highest measured concentration which yielded a linear regression where the coefficient of determination (R 2 ) is equal or greater than 0.98.…”

Section: Discussionmentioning

confidence: 99%

“…The limit of detection (LOD) and limit of quantification (LOQ) are defined as the lowest analyte concentration to be reliably detected and quantitatively determined with accuracy and precision, respectively. They were calculated using the following equations:

where

is the standard deviation of the intercept and

is the slope of the calibration curve ( n = 3) [ 44 ]. The linear range was considered from zero to the highest measured concentration which yielded a linear regression where the coefficient of determination (R 2 ) is equal or greater than 0.98.…”

Section: Methodsmentioning

confidence: 99%

Development of a Redox-Polymer-Based Electrochemical Glucose Biosensor Suitable for Integration in Microfluidic 3D Cell Culture Systems

Navarro-Nateras,

Diaz-Gonzalez,

Aguas-Chantes

et al. 2023

Biosensors

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The inclusion of online, in situ biosensors in microfluidic cell cultures is important to monitor and characterize a physiologically mimicking environment. This work presents the performance of second-generation electrochemical enzymatic biosensors to detect glucose in cell culture media. Glutaraldehyde and ethylene glycol diglycidyl ether (EGDGE) were tested as cross-linkers to immobilize glucose oxidase and an osmium-modified redox polymer on the surface of carbon electrodes. Tests employing screen printed electrodes showed adequate performance in a Roswell Park Memorial Institute (RPMI-1640) media spiked with fetal bovine serum (FBS). Comparable first-generation sensors were shown to be heavily affected by complex biological media. This difference is explained in terms of the respective charge transfer mechanisms. Under the tested conditions, electron hopping between Os redox centers was less vulnerable than H2O2 diffusion to biofouling by the substances present in the cell culture matrix. By employing pencil leads as electrodes, the incorporation of these electrodes in a polydimethylsiloxane (PDMS) microfluidic channel was achieved simply and at a low cost. Under flow conditions, electrodes fabricated using EGDGE presented the best performance with a limit of detection of 0.5 mM, a linear range up to 10 mM, and a sensitivity of 4.69 μA mM−1 cm−2.

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“…The accuracy represents the total number of samples correctly classified considering true and false negatives. This parameter is calculated as follows: 40 (14) where TP stands for true positive; TN for true negative; FP for false positive; and FN for false negative.…”

Section: Statistical Validationmentioning

confidence: 99%

“…13 Voltammetric techniques are examples of electrochemical methodologies used in the identification and dosage of pharmaceutical compounds in various forms (tablets, capsules, injections, suspensions) as well as in biological samples. [13][14][15][16][17][18][19][20][21][22][23] Voltammetric measurements are simple and easily performed. 13 In this sense, the present report proposes a simple, low cost and high precision electrochemical method to detect the presence of flunitrazepam in necrophagous larvae using differential pulse voltammetry (DPV).…”

Section: Introductionmentioning

confidence: 99%

Identification Using Classification Analysis of Flunitrazepam in Necrophagous Larvae via Differential Pulse Voltammetry and Fluorescence Excitation-Emission Matrix (EEM) Spectroscopy

Lima¹,

Morais²,

Jales³

et al. 2018

J. Braz. Chem. Soc.

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The use of insects to identify drugs in a cadaver has often been explored in the field of entomotoxicology. There are accurate methods; however, they require a high cost and are very time-consuming. The objective of this study was to develop two methods based on differential pulse voltammetry (DPV) and fluorescence excitation-emission matrix (EEM) spectroscopy to classify necrophagous larvae (Chrysomya megacephala, C. albiceps, Lucilia sp. and Cochliomyia macellaria) containing flunitrazepam. The voltammograms of larval extract samples were analyzed by principal component analysis (PCA), successive projection algorithm (SPA) and genetic algorithm (GA): linear and quadratic discriminant analysis (LDA and QDA). The EEM fluorescence data from larval extract samples were analyzed by 2D and parallel factor analysis (PARAFAC) with LDA. These results suggest that DPV and EEM combined with chemometrics can be used as tools for the classification of flunitrazepam in fly larvae presenting innovative applications.

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Square wave and differential pulse voltammetric methods for the analysis of olivetol at gold electrode

Cited by 4 publications

References 17 publications

Electrochemical Detection of Olivetol Based on Poly(L-Serine) Film Layered Copper Oxide Modified Carbon Paste Electrode (p-L-Serine/CuO/CPE)

Electrochemical Detection of Olivetol Based on Poly(L-Serine) Film Layered Copper Oxide Modified Carbon Paste Electrode (p-L-Serine/CuO/CPE)

Development of a Redox-Polymer-Based Electrochemical Glucose Biosensor Suitable for Integration in Microfluidic 3D Cell Culture Systems

Identification Using Classification Analysis of Flunitrazepam in Necrophagous Larvae via Differential Pulse Voltammetry and Fluorescence Excitation-Emission Matrix (EEM) Spectroscopy

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