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Abdoullatif Baraket
University of Lyon
Analytical chemistryBiosensorChemistryCyclic voltammetryDielectric spectroscopy
42Publications
9H-index
265Citations
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Publications 45
Newest
#1Talha Jamshaid (Alternatives)H-Index: 1
#2Ernandes Taveira Tenório-Neto (CNRS: Centre national de la recherche scientifique)
Last. Abdelhamid Errachid (CNRS: Centre national de la recherche scientifique)H-Index: 29
view all 11 authors...
In this work, we report the development of a highly sensitive biosensor for sulfapyridine detection based on an integrated bio micro-electromechanical system (Bio-MEMS) containing four gold working electrodes (WEs), a platinum counter electrode (CE), and a reference electrode (RE). Firstly, the cleaned WEs were modified with 4-aminophenylacetic acid (CMA). Then, (5-[4-(amino)phenylsulfonamide]-5-oxopentanoic acid (SA2BSA) was immobilized onto the transducers surface by carbodiimide chemistry. Th...
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#1Faiza NessarkH-Index: 1
#2Mohamed M. Eissa (UCBL: Claude Bernard University Lyon 1)
Last. Abdelhamid ErrachidH-Index: 29
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Abstract The natural biodegradabilty of porous silicon (pSi) in physiological media limits its wider usage for implantable systems. We report the stabilization of porous silicon (pSi) membranes by chemical surface oxidation using RCA1 and RCA2 protocols, which was followed by a PEGylation process using a silane-PEG. These surface modifications stabilized the pSi to allow a long period of immersion in PBS, while leaving the pSi surface sufficiently hydrophilic for good filtration and diffusion of...
1 CitationsSource
#1Mohamed Bahri (University of Sousse)
#2Abdoullatif Baraket (University of Lyon)H-Index: 9
Last. Abdelhamid Errachid (University of Lyon)H-Index: 29
view all 6 authors...
Abstract In the present study, we have developed a capacitance electrochemical biosensor based on silicon nitride substrate (Si3N4/SiO2/Si[P]/Al) for Tumour Necrosis Factor Alpha (TNF-α) cytokines detection. Micro-contact printing, Fluorescence microscopy characterization and contact angle measurement (CAM) were carried out during the bio-functionalization of the biosensor surface. Mott-Schottky analyses were applied for TNF-α detection within the range of 1 pg/mL to 30 pg/mL in which the immuno...
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#2Abdoullatif Baraket (University of Lyon)H-Index: 9
Last. Abdelhamid Elaissari (Lyon College)H-Index: 8
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#1Nadia El Alami El Hassani (AG: Analysis Group)H-Index: 4
#2Abdoullatif Baraket (University of Lyon)H-Index: 9
Last. Nadia Zine (University of Lyon)H-Index: 17
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Abstract Tetracycline (TC) is a veterinary drug, wildly prescribed for prophylactic and therapeutic purposes. Consequently, its remaining residues in food products have to be regularized. We report in this paper about the development of a novel immunosensor based on an integrated bio micro-electromechanical system (Bio-MEMS) containing eight gold microelectrodes (µWEs), an integrated silver and platinum reference and counter electrodes, respectively. TC immobilization on the µWEs surface was con...
4 CitationsSource
#1Lassaad BarhoumiH-Index: 2
#2Francesca G. Bellagambi (UniPi: University of Pisa)H-Index: 8
Last. Abdelhamid ErrachidH-Index: 29
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Tumor necrosis factor-α (TNF-α) is a biomarker of inflammation that occurs in patients suffering from heart failure (HF). Saliva can be sampled in a non-invasive way, and it is currently gaining importance as matrix alternative to blood in diagnostic and therapy monitoring. This work presents the development of an immunosensor array based on eight screen-printed gold electrodes to detect TNF-α in saliva samples. Two different functionalization strategies of electrodes were compared. In the first...
2 CitationsSource
#1M. N. AbbasH-Index: 16
#2Ayman Ali SaeedH-Index: 4
Last. Baljit Singh (Institute of Technology, Tallaght)H-Index: 21
view all 7 authors...
Self-assembled monolayer (SAM) of cobalt teraaminophthalocyanine (CoTAPc) was developed on thioctic acid (TA) dithiol modified gold electrode and electrochemically evaluated as a glutathione (GSH) selective biosensor. The CoTAPc-TA-Au modified electrode was developed by the covalent immobilization of the CoTAPc as the electrochemical mediator onto previously prepared gold electrode modified with TA (TA-Au) via amid bond formation with the carboxylic group of TA, producing well-organized SAM of t...
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Last. Abdelhamid ErrachidH-Index: 29
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Monitoring of circulating N-terminal proBNP (NT-proBNP) biomarkers is crucial for the diagnosis of people suffering from heart failure (HF). In this work, we describe a novel ultra-sensitive NT-proBNP immunosensor for NT-proBNP detection in artificial human saliva. The surface of the developed immunosensor based on gold working microelectrodes (WEs) was biofunctionalized through carboxyl diazonium to immobilize anti-NT-proBNP antibodies. The chemical surface modification of WEs was carried out b...
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Last. Nadia ZineH-Index: 17
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An all-solid-state impedimetric microsensor based on impedimetric measurements for detecting the herbicide metamitron (MM) is reported in the present work. For this purpose, a novel metamitron ionophore has been prepared. It was based on the isolation of the metamitron monoprotonated form coupled to the metallocarborane anion, cobalt bis (dicarbollide), ([3,3′-Co(1,2-closo-C2B9H11)2]−) as an ion-pair complex of the type [3,3′-Co(1,2-closo-C2B9H11)2]−[C10H11ON4]+. Once the ion-pair complex was sy...
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