Development of an Electrochemical Sensor Based on Nanocomposite of Fe3O4@SiO2 and Multiwalled Carbon Nanotubes for Determination of Tetracycline in Real Samples

Amaral, Edna Ferreira; Silva, Daniela Nunes da; Silva, Maria Cristina; Pereira, Arnaldo César

doi:10.3390/electrochem2020018

Cited by 11 publications

(3 citation statements)

References 43 publications

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“…Currently one of the main quality concerns for the industry is the risk of contaminants in milk and dairy products, such as medical residues (e.g., antibiotics, hormones), − adulterants (e.g., melamine, − hydrogen peroxide, − baking soda, urea, washing soda, salt, unclean water), , pathogens (e.g., bacteria, fungus, etc. ), surfactants (e.g., sodium dodecylbenzene sulfate, 4-nonylphenol), furfural, bisphenol A, , toxins (e.g., aflatoxin, etc.…”

Section: Introductionmentioning

confidence: 99%

Electrochemical Methods for the Analysis of Milk

Motshakeri

Sharma

Phillips

et al. 2022

J. Agric. Food Chem.

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The milk and dairy industries are some of the most profitable sectors in many countries. This business requires close control of product quality and continuous testing to ensure the safety of the consumers. The potential risk of contaminants or degradation products and undesirable chemicals necessitates the use of fast, reliable detection tools to make immediate production decisions. This review covers studies on the application of electrochemical methods to milk (i.e., voltammetric and amperometric) to quantify different analytes, as reported over the last 10 to 15 years. The review covers a wide range of analytes, including allergens, antioxidants, organic compounds, nitrogen-and aldehyde containing compounds, biochemicals, heavy metals, hydrogen peroxide, nitrite, and endocrine disruptors. The review also examines pretreatment procedures applied to milk samples and the use of novel sensor materials. Final perspectives are provided on the future of cost-effective and easy-to-use electrochemical sensors and their advantages over conventional methods.

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Section: Introductionmentioning

confidence: 99%

Electrochemical Methods for the Analysis of Milk

Motshakeri

Sharma

Phillips

et al. 2022

J. Agric. Food Chem.

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“…There are a number of applications in which nanocomposites based on iron and silica oxides can be used with great success, namely: in the remediation of the polluted environment by acting as adsorbents [ 10 , 11 ], or catalyzers [ 12 , 13 ], sensors [ 14 ] and especially in medical field [ 15 , 16 ].…”

Section: Introductionmentioning

confidence: 99%

Antimicrobial Perspectives of Active SiO2FexOy/ZnO Composites

et al. 2022

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The antibacterial activity of zinc oxide particles has received significant interest worldwide, especially through the implementation of technology to synthesize particles in the nanometer range. This study aimed to determine the antimicrobial efficacy of silica-based iron oxide matrix (SiO2FexOy) synthesized with various amounts of ZnO (SiO2FexOyZnO) against various pathogens. It is observed that, with the addition of ZnO to the system, the average size of the porosity of the material increases, showing increasingly effective antibacterial properties. Zinc-iron-silica oxide matrix composites were synthesized using the sol–gel method. The synthesized materials were investigated physicochemically to highlight their structural properties, through scanning electron microscopy (SEM), Energy Dispersive X-ray Spectroscopy (EDX), and Fourier-transform infrared spectroscopy (FT-IR). At the same time, surface area, pore size and total pore volume were determined for materials synthesized using the Brunauer–Emmett–Teller (BET) method. Although the material with 0.0001 g ZnO (600 m2/g) has the highest specific surface area, the best antimicrobial activity was obtained for the material with 1.0 g ZnO, when the average pore volume is the largest (~8 nm) for a specific surface of 306 m2/g. This indicates that the main role in the antibacterial effect has reactive oxygen species (ROS) generated by the ZnO that are located in the pores of the composite materials. The point of zero charge (pHpZc) is a very important parameter for the characterization of materials that indicate the acid-base behaviour. The pHpZc value varies between 4.9 and 6.3 and is influenced by the amount of ZnO with which the iron-silica oxide matrix is doped. From the antimicrobial studies carried out, it was found that for S. aureus the total antibacterial effect was obtained at the amount of 1.0 g ZnO. For Gram-negative bacteria, a total antibacterial effect was observed in S. flexneri (for the material with 0.1 g ZnO), followed by E. coli (for 1.0 g ZnO). For P. aeruginosa, the maximum inhibition rate obtained for the material with 1.0 g ZnO was approximately 49%.

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“…aditivos [203], aminoácidos [204] o antibióticos [205], entre otros componentes presentes en productos lácteos.…”

Section: Electrochemical Sensors and Biosensors: New Horizons And Cha...unclassified

Sensores y biosensores electroquímicos: nuevos horizontes y desafíos en su integración en sistemas multisensores para su aplicación en la industria alimentaria

Comino¹

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Sensores y biosensores electroquímicos: nuevos horizontes y desafíos en su integración en sistemas multisensores para su aplicación en la industria alimentaria Capítulo 1: Justificación y objetivos Electrochemical sensors and biosensors: new horizons and challenges in their integration in multisensor systems for food industry applications Capítulo 5: Bibliografía Electrochemical sensors and biosensors: new horizons and challenges in their integration in multisensor systems for food industry applications Capítulo 5: Bibliografía 91 nanocomposite deposited on boron-doped diamond electrodes for catechol detection, Materials (Basel). 13 (2020) 1-11.

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Development of an Electrochemical Sensor Based on Nanocomposite of Fe3O4@SiO2 and Multiwalled Carbon Nanotubes for Determination of Tetracycline in Real Samples

Cited by 11 publications

References 43 publications

Electrochemical Methods for the Analysis of Milk

Electrochemical Methods for the Analysis of Milk

Antimicrobial Perspectives of Active SiO2FexOy/ZnO Composites

Sensores y biosensores electroquímicos: nuevos horizontes y desafíos en su integración en sistemas multisensores para su aplicación en la industria alimentaria

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