A new electrochemical sensor with the Refreshable Silver Liquid Amalgam Film multi-Electrode for sensitive voltammetric determination of vitamin K2 (menaquinone)

Jedlińska, Katarzyna; Strus, Magdalena; Baś, Bogusław

doi:10.1016/j.electacta.2018.01.204

Cited by 17 publications

(10 citation statements)

References 34 publications

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“…The surface of the electrode can be equal to 0.4, 0.8 and 1.2 mm 2 , depending on the number of the protruding silver discs. 71 Great advantage of the MF-AgSAE, AgLAF-AgSAE and the RAgLAFm-E is the possibility to strictly control time, when the electrode is inside the analyzed solution.…”

Section: Mercury and Amalgams Based Electrodesmentioning

confidence: 99%

Review—Voltammetric Sensors with Laterally Placed Working Electrodes: A Review

Porada

Jedlińska

Lipińska

et al. 2020

J. Electrochem. Soc.

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Voltammetric sensors with laterally placed working electrode are an interesting alternative to classic electrodes since they offer enhanced performance in electroanalysis. Their characteristics include easier preparation for measurement, removal of interferences and gas bubbles, amplification of mass-transport, and possibility of miniaturization and automation. In this review, construction and characteristics of the custom-designed in our team cyclically renewable, silver, gold, bismuth, glassy carbon, ceramic and amalgam annular band, bi-band, ring, and multidisc electrodes are discussed in detail. They represent the current trends in electroanalysis, aimed at reducing of amount of the used toxic electrode materials, like mercury and its compounds, and organic solvents used for a sample preparation, and are coherent with the concept of Green Chemistry. For each sensor type available strategies for mechanical and electrochemical surface renovation/activation before measurement are elucidated and evaluated on the basis of interpretation of voltammetric and tensammetric curves. Particular attention is put on electrochemical characteristics of the described sensors and their application for determination of trace amounts of metal ions and their complexes, organic compounds, and surface-active substances by means of tensammetry, and anodic, cathodic, adsorptive and catalytic adsorptive stripping voltammetry. Final considerations are addressed to the possibility of measurement automation and related future prospects.

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Section: Mercury and Amalgams Based Electrodesmentioning

confidence: 99%

Review—Voltammetric Sensors with Laterally Placed Working Electrodes: A Review

Porada

Jedlińska

Lipińska

et al. 2020

J. Electrochem. Soc.

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“…However, due to the introduction of a biological matrix, the peak height was lower than in the plain supporting electrolyte, which translates into lesser sensitivity. As described in [Jedlińska, Strus, and Baś 2018], signi cant improvement in repeatability and reproducibility was obtained when the cathodic scan preceded the anodic one.…”

Section: Optimization Of Experimental Conditionsmentioning

confidence: 78%

Fast and reliable voltammetric determination of menaquinone (vitamin K2) produced in-vitro by Bacillus subtilis cultures

Smajdor

Porada

Lipińska

et al. 2023

Preprint

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Vitamin K2 (VK2) is one of two natural forms of vitamin K, necessary for the proper functioning of organisms. Currently, it is sourced from chemical synthesis, nonetheless, it is worth reaching out to its natural sources. The aim of the study was to devise a voltammetric procedure for the determination of vitamin K2 (VK2) produced by bacteria in order to find the strain that exhibits the highest efficiency of VK2 production. Bacillus subtilis, isolated from traditional Japanese food (Nattō), was chosen as a model strain. Employment of the Controlled Growth Mercury Drop Electrode (CGMDE) was crucial, as it is the only electrode that allows performing the measurement on the surface specifically renewed directly before, thus minimizing the influence of interferents. This new method was successfully applied for VK2 determination in supernatant samples. Developed procedure is robust and easily adjustable for the variety of biological matrixes. Strong differences in VK2 production depending on cultivation time were observed, but no direct correlation between the VK2 concentration in the breeding medium and the cultivation time was found. The devised protocol will be used in further measurements with different bacteria species, that have the ability to produce VK2 and settle in the human intestine.

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“…For the first time, the Refreshable Silver Liquid Amalgam Film multi-electrode (RAgLAFm-E) was used to quantify Vit K 2 (menaquinone). The electrochemical behavior of Vit K 2 was investigated using cyclic voltammetry (CV), and it was effectively utilized to detect Vit K 2 in pharmaceuticals and food samples (Jedlin ´ska et al 2018). In recent years, many electrochemical sensors for detecting Vit K have been developed, but fiber optic sensors have not received much attention (Tabassum and Gupta 2016).…”

Section: Detection Of Vit Kmentioning

confidence: 99%

“…The electrochemical sensing of vitamins is widely used by various researchers across the globe (Huang et al 2021). It is used for finding the concentration of Vit A (Lv et al 2017), Vit D(Sarkar et al 2018, Vit K 2 (Jedlin ´ska et al 2018), and other vitamins.…”

Section: Introductionmentioning

confidence: 99%

Advances in electrochemical and optical sensing techniques for vitamins detection: a review

Kumari¹,

Vyas²,

Kumar

2021

ISSS J Micro Smart Syst

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Vitamins are essential nutrients that aid in metabolism, cell growth, and the appropriate functioning of other biomolecules. They are required for the proper functioning of various systems in human body. Both vitamin shortage and excess can pave the way for a variety of illnesses. They enter the body via food and supplements eaten, making it critical to measure the vitamin concentrations in food, medicines, and biological fluids. The concentrations of these vitamins are determined using a variety of techniques. The performance measure of the techniques like selectivity, sensitivity, and limit of detection is crucial in their utilization. Among the many techniques of determination, electrochemical sensing and optical sensing have garnered widespread interest because of their potential to improve performance. Additionally, the introduction of innovative materials has added a lot of benefits to sensing. The aim of this article is to summarize significant work toward recent improvements in electrochemical and optical methods for detecting different vitamins. Additionally, it attempts to assess the gaps in vitamin sensing in order to encourage researchers to fill such gaps that will benefit the community.

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A new electrochemical sensor with the Refreshable Silver Liquid Amalgam Film multi-Electrode for sensitive voltammetric determination of vitamin K2 (menaquinone)

Cited by 17 publications

References 34 publications

Review—Voltammetric Sensors with Laterally Placed Working Electrodes: A Review

Review—Voltammetric Sensors with Laterally Placed Working Electrodes: A Review

Fast and reliable voltammetric determination of menaquinone (vitamin K2) produced in-vitro by Bacillus subtilis cultures

Advances in electrochemical and optical sensing techniques for vitamins detection: a review

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