LIVIVO - The Search Portal for Life Sciences

zur deutschen Oberfläche wechseln
Advanced search

Search results

Result 1 - 10 of total 67

Search options

  1. Article ; Online: Synthesis and electrochemical properties of nanocubes Mn

    Sanayee, Mona / Arvand, Majid

    Scientific reports

    2023  Volume 13, Issue 1, Page(s) 20838

    Abstract: Exploring environment-friendly active material-electrolyte combinations has become increasingly necessary with the rising use of supercapacitors. In this study, the potential of ternary ... ...

    Abstract Exploring environment-friendly active material-electrolyte combinations has become increasingly necessary with the rising use of supercapacitors. In this study, the potential of ternary Mn
    Language English
    Publishing date 2023-11-27
    Publishing country England
    Document type Journal Article
    ZDB-ID 2615211-3
    ISSN 2045-2322 ; 2045-2322
    ISSN (online) 2045-2322
    ISSN 2045-2322
    DOI 10.1038/s41598-023-47738-w
    Database MEDical Literature Analysis and Retrieval System OnLINE

    More links

    Kategorien

    Order via subito

    This service is chargeable due to the Delivery terms set by subito. Orders including an article and supplementary material will be classified as separate orders. In these cases, fees will be demanded for each order.

  2. Article ; Online: A novel photoelectrochemical approach with "signal-off" pattern for anodic detection of sunset yellow in food samples based on Bi2WO6/TiO2 NTAs heterostructure nanocomposite.

    Bakhnooh, Fatemeh / Arvand, Majid

    Food chemistry

    2023  Volume 438, Page(s) 138070

    Abstract: A new and signal-off photoelectrochemical (PEC) sensing platform utilizing ... ...

    Abstract A new and signal-off photoelectrochemical (PEC) sensing platform utilizing TiO
    MeSH term(s) Reproducibility of Results ; Nanotubes/chemistry ; Nanocomposites ; Electrochemical Techniques/methods ; Limit of Detection ; Biosensing Techniques/methods
    Chemical Substances 6-hydroxy-5-((p- sulfophenyl)azo)-2-naphthalenesulfonic acid disodium salt (H77VEI93A8) ; bismuth wolframate
    Language English
    Publishing date 2023-11-23
    Publishing country England
    Document type Journal Article
    ZDB-ID 243123-3
    ISSN 1873-7072 ; 0308-8146
    ISSN (online) 1873-7072
    ISSN 0308-8146
    DOI 10.1016/j.foodchem.2023.138070
    Database MEDical Literature Analysis and Retrieval System OnLINE

    Full text online

    More links

    Kategorien

    In stock of ZB MED Bonn / Germany

    Z 3634: Show issues

    Order via subito

    This service is chargeable due to the Delivery terms set by subito. Orders including an article and supplementary material will be classified as separate orders. In these cases, fees will be demanded for each order.

    Inter-library loan at ZB MED

    Your chosen title can be delivered directly to ZB MED Cologne location if you are registered as a user at ZB MED Cologne.

  3. Article ; Online: Electrospun ruthenium oxide nanofibers/poly(sulfosalicylic acid) nanocomposite as an highly sensitive electrochemical platform for determination of sunset yellow in food samples

    Ansari, Sepideh Hojjat / Arvand, Majid

    Food Measure. 2023 Apr., v. 17, no. 2 p.1616-1627

    2023  

    Abstract: Synthetic dyes have been abundantly used recently as additives in different kinds of processed foods to enhance their color, appearance, and flavor. Nonetheless, many reports announce high hazards to human health from artificial colorants, particularly ... ...

    Abstract Synthetic dyes have been abundantly used recently as additives in different kinds of processed foods to enhance their color, appearance, and flavor. Nonetheless, many reports announce high hazards to human health from artificial colorants, particularly in concentrations exceeding the limit. In this paper, an economical and efficient nanocomposite film based on ruthenium oxide nanofibers/poly(sulfosalicylic acid) (RuO₂ NFs/PSSA) was synthesized for sensitive determination of sunset yellow in different food samples. At first, RuO₂ NFs were fabricated by electrospinning method. Subsequently, a commercial carbon paste electrode (CPE) was employed as a substrate for the preparation of RuO₂ NFs/PSSA via an electrochemical deposition process. It was clearly observed that RuO₂ NFs/PSSA/CPE enhanced the redox peak currents of sunset yellow conspicuously and could determine it sensitively and separately at its low concentrations. Under the optimum operating conditions, linear calibration curves were obtained in the range of 0.0005–0.1 and 0.1–9.0 μM with a detection limit of 0.38 nM. The prominent performance of the sensing platform originated from the hybrid composition and integrality of the electrospun nanofibers membrane. The embedded PSAA not only improved the membrane conductivity of the RuO₂ NFs to promote sunset yellow adsorption but also provided vacancies to accommodate sunset yellow, therefore enhancing the electrochemical performance of RuO₂ NFs in diagnostic performance.
    Keywords adsorption ; calibration ; carbon electrodes ; color ; detection limit ; electrochemistry ; flavor ; human health ; nanocomposites ; nanofibers ; ruthenium
    Language English
    Dates of publication 2023-04
    Size p. 1616-1627.
    Publishing place Springer US
    Document type Article ; Online
    ZDB-ID 2754612-3
    ISSN 2193-4134 ; 2193-4126
    ISSN (online) 2193-4134
    ISSN 2193-4126
    DOI 10.1007/s11694-022-01731-5
    Database NAL-Catalogue (AGRICOLA)

    Full text online

    More links

    Kategorien

    Order via subito

    This service is chargeable due to the Delivery terms set by subito. Orders including an article and supplementary material will be classified as separate orders. In these cases, fees will be demanded for each order.

  4. Article: Electrochemical Sensing of Tryptophan and Tyrosine in Chronic Kidney Disease Patients Using Magnetic Core/Ag Nanoparticles Shell Nanocomposite Modified Electrode

    Pourhabib, Akram / Arvand, Majid

    Journal of analytical chemistry. 2022 Feb., v. 77, no. 2

    2022  

    Abstract: This paper reports the production of a novel magnetic nanocomposite based on core-shell Fe₃O₄@Ag nanoparticles. Fe₃O₄@Ag nanoparticles were used to fabricate a modified carbon paste electrode (Fe₃O₄@Ag/CPE). Fe₃O₄@Ag/CPE was investigated for the ... ...

    Abstract This paper reports the production of a novel magnetic nanocomposite based on core-shell Fe₃O₄@Ag nanoparticles. Fe₃O₄@Ag nanoparticles were used to fabricate a modified carbon paste electrode (Fe₃O₄@Ag/CPE). Fe₃O₄@Ag/CPE was investigated for the simultaneous determination of tryptophan (Trp) and tyrosine (Tyr) in an aqueous media (0.1 M phosphate buffer solution, pH 6.5) using square wave voltammetry. The synthesized nanocomposite was characterized by transmission electron microscopy, scanning electron microscopy, and X-ray diffraction spectroscopy. The proposed electrode for Trp and Tyr exhibits linearity in the range of 0.5–100 µM with detection limits of 0.05 and 0.04 µM for Trp and Tyr, respectively. The novel proposed voltammetric method was successfully applied to the simultaneous determination of serum Trp and Tyr levels of chronic kidney disease patients with results similar to those obtained using a high performance liquid chromatography method at a 95% confidence level.
    Keywords X-ray diffraction ; analytical chemistry ; blood serum ; carbon electrodes ; electrochemistry ; high performance liquid chromatography ; kidney diseases ; magnetism ; nanocomposites ; nanosilver ; pH ; phosphates ; spectroscopy ; transmission electron microscopy ; tryptophan ; tyrosine ; voltammetry
    Language English
    Dates of publication 2022-02
    Size p. 235-245.
    Publishing place Pleiades Publishing
    Document type Article
    ZDB-ID 2057336-4
    ISSN 1608-3199 ; 1061-9348
    ISSN (online) 1608-3199
    ISSN 1061-9348
    DOI 10.1134/S1061934822020022
    Database NAL-Catalogue (AGRICOLA)

    Full text online

    More links

    Kategorien

    Order via subito

    This service is chargeable due to the Delivery terms set by subito. Orders including an article and supplementary material will be classified as separate orders. In these cases, fees will be demanded for each order.

  5. Article ; Online: High affinity aptamers for ultra-sensitive detection of aflatoxin B1 in milk and groundnut samples with label-free photo-electrochemical aptasensor

    Asl, Ghazal Behjati / Arvand, Majid / Habibi, Maryam Farahmand

    Food Chemistry. 2022 Dec., v. 397 p.133829-

    2022  

    Abstract: Aflatoxin B₁ is a potent liver toxin and easily accumulated in foodstuff and environment via the food chain, subjecting high hazards to human health. Rapid initial diagnosis is one of the most impressive monitoring procedures to overcome the potential ... ...

    Abstract Aflatoxin B₁ is a potent liver toxin and easily accumulated in foodstuff and environment via the food chain, subjecting high hazards to human health. Rapid initial diagnosis is one of the most impressive monitoring procedures to overcome the potential hazards. Nevertheless, the classical approaches confront many limitations, like low specificity and sensitivity and complicated procedures. Herein, a photo-electrochemical aptasensor based on sensitized poly(dopamine)@functionalized multiwall carbon nanotube/titanium dioxide (PDA@f-MWCNTs/TiO₂ NTs) was designed to detect aflatoxin B₁ in real samples (e.g. groundnut and milk). The mentioned label-free biosensing platform not only needed simple operations but also presented outstanding reusability, storage stability, reproducibility, and specificity simultaneously. This suggested strategy could sensitively and selectively detect aflatoxin B₁ with dynamic range of 0.005–50 ng/mL and a low limit of detection 1 pg/mL. This procedure could provide the bright prospect for detection of aflatoxin B₁ residues in foodstuff.
    Keywords aflatoxin B1 ; aptasensors ; carbon nanotubes ; detection limit ; dopamine ; food chain ; food chemistry ; foods ; human health ; liver ; milk ; oligonucleotides ; peanuts ; storage quality ; titanium dioxide ; Aptasensor ; Photo-electrochemical ; Foodstuff ; Label-free
    Language English
    Dates of publication 2022-12
    Publishing place Elsevier Ltd
    Document type Article ; Online
    ZDB-ID 243123-3
    ISSN 1873-7072 ; 0308-8146
    ISSN (online) 1873-7072
    ISSN 0308-8146
    DOI 10.1016/j.foodchem.2022.133829
    Database NAL-Catalogue (AGRICOLA)

    Full text online

    More links

    Kategorien

    In stock of ZB MED Bonn / Germany

    Z 3634: Show issues

    Order via subito

    This service is chargeable due to the Delivery terms set by subito. Orders including an article and supplementary material will be classified as separate orders. In these cases, fees will be demanded for each order.

    Inter-library loan at ZB MED

    Your chosen title can be delivered directly to ZB MED Cologne location if you are registered as a user at ZB MED Cologne.

  6. Article ; Online: High affinity aptamers for ultra-sensitive detection of aflatoxin B1 in milk and groundnut samples with label-free photo-electrochemical aptasensor.

    Asl, Ghazal Behjati / Arvand, Majid / Habibi, Maryam Farahmand

    Food chemistry

    2022  Volume 397, Page(s) 133829

    Abstract: Aflatoxin ... ...

    Abstract Aflatoxin B
    MeSH term(s) Aflatoxin B1/analysis ; Animals ; Aptamers, Nucleotide/chemistry ; Biosensing Techniques/methods ; Electrochemical Techniques/methods ; Humans ; Limit of Detection ; Milk/chemistry ; Reproducibility of Results
    Chemical Substances Aptamers, Nucleotide ; Aflatoxin B1 (9N2N2Y55MH)
    Language English
    Publishing date 2022-07-30
    Publishing country England
    Document type Journal Article
    ZDB-ID 243123-3
    ISSN 1873-7072 ; 0308-8146
    ISSN (online) 1873-7072
    ISSN 0308-8146
    DOI 10.1016/j.foodchem.2022.133829
    Database MEDical Literature Analysis and Retrieval System OnLINE

    Full text online

    More links

    Kategorien

    In stock of ZB MED Bonn / Germany

    Z 3634: Show issues

    Order via subito

    This service is chargeable due to the Delivery terms set by subito. Orders including an article and supplementary material will be classified as separate orders. In these cases, fees will be demanded for each order.

    Inter-library loan at ZB MED

    Your chosen title can be delivered directly to ZB MED Cologne location if you are registered as a user at ZB MED Cologne.

  7. Article ; Online: Surface imprinting by using bi-functional monomers on spherical template magnetite for selective detection of levodopa in biological fluids.

    Pourhajghanbar, Maedeh / Arvand, Majid / Habibi, Maryam Farahmand

    Talanta

    2022  Volume 254, Page(s) 124136

    Abstract: The present work introduces an innovative biosensing platform for greatly sensitive determination of levodopa medicine. Initially, spherical magnetic (SM) nanoparticles were prepared by hydrothermal fabrication approach and used as a pattern to make ... ...

    Abstract The present work introduces an innovative biosensing platform for greatly sensitive determination of levodopa medicine. Initially, spherical magnetic (SM) nanoparticles were prepared by hydrothermal fabrication approach and used as a pattern to make spherical magnetic molecular imprinted polymer (SMMIP). Afterward, levodopa-molecularly imprinted layer was grown on the surface of the spherical magnetic pattern by electropolymerization with dopamine and resorcinol as bi-functional monomers and levodopa as a template molecule, which enhanced the specific recognition of the sensing platform to levodopa. The presence of SM nanoparticles could not only accelerate the mass transfer, the electron transport rate, and improve specific surface area of the electrode but also facilitate the recognition of the polymer, in this way increasing the current response and improving the performance of the biosensor. The superior sensing efficiency of the presented biosensor was confirmed based on the low limit of detection of 10 nmol L
    Language English
    Publishing date 2022-11-25
    Publishing country Netherlands
    Document type Journal Article
    ZDB-ID 1500969-5
    ISSN 1873-3573 ; 0039-9140
    ISSN (online) 1873-3573
    ISSN 0039-9140
    DOI 10.1016/j.talanta.2022.124136
    Database MEDical Literature Analysis and Retrieval System OnLINE

    Full text online

    More links

    Kategorien

    Order via subito

    This service is chargeable due to the Delivery terms set by subito. Orders including an article and supplementary material will be classified as separate orders. In these cases, fees will be demanded for each order.

  8. Article ; Online: A magnetic nanocomposite prepared from electrospun CoFe

    Ansari, Sepideh Hojat / Arvand, Majid

    Mikrochimica acta

    2020  Volume 187, Issue 2, Page(s) 103

    Abstract: A magnetic bar carbon paste electrode (MBCPE) modified with cobalt ferrite magnetic electrospun nanofibers (NFs) and graphene oxide (GO) is described for the electrochemical determination of rutin. The NFs were prepared by electrospinning using a ... ...

    Abstract A magnetic bar carbon paste electrode (MBCPE) modified with cobalt ferrite magnetic electrospun nanofibers (NFs) and graphene oxide (GO) is described for the electrochemical determination of rutin. The NFs were prepared by electrospinning using a solution that contains poly(vinyl pyrrolidone) (PVP) and Co(II) and Fe(III) nitrates as metal sources. Carbon paste was prepared by hand mixing GO, CoFe
    Language English
    Publishing date 2020-01-07
    Publishing country Austria
    Document type Journal Article
    ZDB-ID 89-9
    ISSN 1436-5073 ; 0026-3672
    ISSN (online) 1436-5073
    ISSN 0026-3672
    DOI 10.1007/s00604-019-4068-3
    Database MEDical Literature Analysis and Retrieval System OnLINE

    Full text online

    More links

    Kategorien

    In stock of ZB MED Bonn / Germany

    Z 56/171: Show issues
    Z 8.1: Show issues

    Order via subito

    This service is chargeable due to the Delivery terms set by subito. Orders including an article and supplementary material will be classified as separate orders. In these cases, fees will be demanded for each order.

    Inter-library loan at ZB MED

    Your chosen title can be delivered directly to ZB MED Cologne location if you are registered as a user at ZB MED Cologne.

  9. Article ; Online: Label-free electrochemical aptasensor for progesterone detection in biological fluids.

    Samie, Hedieh Asadi / Arvand, Majid

    Bioelectrochemistry (Amsterdam, Netherlands)

    2020  Volume 133, Page(s) 107489

    Abstract: A label-free electrochemical progesterone (P4) aptasensor was successfully developed by covalently immobilizing ... ...

    Abstract A label-free electrochemical progesterone (P4) aptasensor was successfully developed by covalently immobilizing NH
    MeSH term(s) Adult ; Aptamers, Nucleotide/chemistry ; Biosensing Techniques/methods ; Dielectric Spectroscopy ; Electrochemical Techniques/methods ; Female ; Gold/chemistry ; Graphite/chemistry ; Humans ; Limit of Detection ; Nanotubes, Carbon/chemistry ; Nanotubes, Carbon/ultrastructure ; Progesterone/analysis ; Progesterone/blood ; Progestins/analysis ; Progestins/blood ; Quantum Dots/chemistry
    Chemical Substances Aptamers, Nucleotide ; Nanotubes, Carbon ; Progestins ; Progesterone (4G7DS2Q64Y) ; Gold (7440-57-5) ; Graphite (7782-42-5)
    Language English
    Publishing date 2020-02-19
    Publishing country Netherlands
    Document type Evaluation Study ; Journal Article
    ZDB-ID 2010650-6
    ISSN 1878-562X ; 0302-4598 ; 1567-5394
    ISSN (online) 1878-562X
    ISSN 0302-4598 ; 1567-5394
    DOI 10.1016/j.bioelechem.2020.107489
    Database MEDical Literature Analysis and Retrieval System OnLINE

    Full text online

    More links

    Kategorien

    In stock of ZB MED Cologne/Königswinter

    Zs.A 1178: Show issues Location:
    Je nach Verfügbarkeit (siehe Angabe bei Bestand)
    bis Jg. 1994: Bestellungen von Artikeln über das Online-Bestellformular
    Jg. 1995 - 2021: Lesesall (1.OG)
    ab Jg. 2022: Lesesaal (EG)

    Order via subito

    This service is chargeable due to the Delivery terms set by subito. Orders including an article and supplementary material will be classified as separate orders. In these cases, fees will be demanded for each order.

  10. Article: A label-free electrochemical aptasensor for sensitive edifenphos detection in rice

    Arvand, Majid / Gholami, Javad

    Analytical methods. 2020 Mar. 5, v. 12, no. 9

    2020  

    Abstract: Herein, for the first time, we developed a facile and sensitive method for the determination of edifenphos (EDI). An aptamer (APT) covalently attached on the surface of a glassy carbon electrode (GCE) was covered with a nanocomposite composed of reduced ... ...

    Abstract Herein, for the first time, we developed a facile and sensitive method for the determination of edifenphos (EDI). An aptamer (APT) covalently attached on the surface of a glassy carbon electrode (GCE) was covered with a nanocomposite composed of reduced graphene oxide (rGO) and functionalized multi-walled carbon nanotubes (f-MWCNTs). To promote electron transfer, amplify the signal and increase the stability of the electrode, this nanocomposite was deposited on the GCE in two steps. In the first step, graphene oxide (GO) and f-MWCNTs were deposited on the GCE (f-MWCNT–GO/GCE). In the next step, electrochemical reduction afforded the rGO and f-MWCNT nanocomposite (f-MWCNT–rGO). Following that, aminated APT was immobilized on the f-MWCNT–rGO/GCE through the covalent coupling of APT and the carboxylate groups of f-MWCNT–rGO (APT/f-MWCNT–rGO/GCE). This modified electrode was evaluated by electrochemical methods, including cyclic voltammetry (CV), electrochemical impedance spectroscopy (EIS) and differential pulse voltammetry (DPV). The obtained data from DPV, under optimized conditions, showed a wide linear range from 0.001 to 1300 nmol L−1, and the detection limit (LOD) was 0.1 pmol L−1. Moreover, the fabricated aptasensor exhibited good stability, reproducibility, and rapid response for EDI in real samples.
    Keywords aptasensors ; carbon nanotubes ; chemical bonding ; detection limit ; dielectric spectroscopy ; edifenphos ; electrochemistry ; electron transfer ; glassy carbon electrode ; graphene ; graphene oxide ; nanocomposites ; oligonucleotides ; rice ; voltammetry
    Language English
    Dates of publication 2020-0305
    Size p. 1237-1243.
    Publishing place The Royal Society of Chemistry
    Document type Article
    ZDB-ID 2515210-5
    ISSN 1759-9679 ; 1759-9660
    ISSN (online) 1759-9679
    ISSN 1759-9660
    DOI 10.1039/d0ay00011f
    Database NAL-Catalogue (AGRICOLA)

    More links

    Kategorien

    Order via subito

    This service is chargeable due to the Delivery terms set by subito. Orders including an article and supplementary material will be classified as separate orders. In these cases, fees will be demanded for each order.

To top