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Kurup CP, Mohd-Naim NF, Ahmed MU. A solid-state electrochemiluminescence aptasensor for β-lactoglobulin using Ru-AuNP/GNP/Naf nanocomposite-modified printed sensor. Mikrochim Acta 2022; 189:165. [PMID: 35355134 DOI: 10.1007/s00604-022-05275-9] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/25/2021] [Accepted: 03/10/2022] [Indexed: 01/16/2023]
Abstract
An electrochemiluminescence (ECL) aptasensor for the detection of the milk protein allergen β-lactoglobulin (β-LG) using nanocomposite as luminophore was fabricated. The Ru-AuNPs/GNP/Naf complex was formed by combining the Rubpy32+-AuNPs complex (Ru-AuNPs), prepared by modifying the negatively charged surface of gold nanoparticles (AuNPs) with positively charged Rubpy32+ through electrostatic interactions and the graphene nanoplatelets-Nafion (GNP/Naf) at a ratio of 2:1. The nanocomposite was coated on the surface of the screen-printed electrode (SPCE) through the film-forming properties of Nafion. A layer of chitosan (CS) was coated onto this modified electrode, and later amine-terminated β-LG aptamers were covalently attached to the CS/Ru-AuNP/GNP/Naf via glutaraldehyde (GLUT) cross-linking. When β-LG was incubated with the aptasensor, a subsequent decrease in ECL intensity was recorded. Under the optimal conditions, the ECL intensity of the aptasensor changed linearly with the logarithmic concentration of β-LG, in the range 0.1 to 1000 pg/ml, and the detection limit was 0.02 pg/mL (3σ/m). The constructed aptasensor displayed simple and fast determination of β-LG with excellent reproducibility, stability, and high specificity. Additionally, the proposed ECL aptasensor displayed high recoveries (92.5-112%) and low coefficients of variation (1.6-7.8%), when β-LG fortified samples were analyzed. Integrating Ru-AuNPs/GNP/Naf nanocomposite in the ECL aptasensor paves the way towards a cost-effective and sensitive detection of the milk allergen β-LG.
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Affiliation(s)
- Chitra Padmakumari Kurup
- Biosensors and Nanobiotechnology Laboratory, Integrated Science Building, Faculty of Science, Universiti Brunei Darussalam, Jalan Tungku Link, Gadong, 1410, BE, Brunei Darussalam
| | - Noor Faizah Mohd-Naim
- PAPRSB Institute of Health Sciences, Universiti Brunei Darussalam, Jalan Tungku Link, Gadong, 1410, BE, Brunei Darussalam
| | - Minhaz Uddin Ahmed
- Biosensors and Nanobiotechnology Laboratory, Integrated Science Building, Faculty of Science, Universiti Brunei Darussalam, Jalan Tungku Link, Gadong, 1410, BE, Brunei Darussalam.
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Manouchehri M, Seidi S, Naseri MT, Rouhollahi A. Trace determination of antifungal drugs in biological fluids through a developed approach of hydrogel-based spin-column micro-solid-phase extraction followed by LC-MS/MS analysis. J Sep Sci 2021; 45:594-601. [PMID: 34714600 DOI: 10.1002/jssc.202100560] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/14/2021] [Revised: 10/22/2021] [Accepted: 10/26/2021] [Indexed: 12/24/2022]
Abstract
In the present research, a blended polyacrylamide-chitosan hydrogel was synthesized. For the first time, the prepared sorbent was efficiently employed in a hydrogel-based spin-column setup as a promising format. The proposed method was applied for monitoring the trace amounts of ketoconazole, clotrimazole, and miconazole in blood samples. Effective adsorption and desorption parameters were optimized using a central composite design and the one-variable-at-a-time method. Under the optimal conditions, the calibration curves were linear in the range of 15.0-1000.0, 1.0-1000.0, and 2.0-1000.0 ng mL-1 for ketoconazole, clotrimazole, and miconazole, respectively, along with intra- and interday precision less than 8.4%. Limits of detection were obtained between 0.2 and 5.0 ng mL-1 . The preconcentration factors were found in the range of 5.9-7.8. The introduced method was successfully applied for micro-solid-phase extraction of trace amounts of target antifungal drugs in blood samples, followed by liquid chromatography-tandem mass spectrometry. Satisfactory relative recoveries of 94.5-103.5% were obtained, implying method reliability. Overall, the proposed method provides good accuracy and repeatability, high reusability, and good applicability to determine antifungal drugs in complex biological matrices.
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Affiliation(s)
- Mahshid Manouchehri
- Department of Analytical Chemistry, Faculty of Chemistry, K.N. Toosi University of Technology, Tehran, Iran
| | - Shahram Seidi
- Department of Analytical Chemistry, Faculty of Chemistry, K.N. Toosi University of Technology, Tehran, Iran
| | - Mohammad Taghi Naseri
- Department of Chemistry, Faculty of Sciences, Tarbiat Modares University, Tehran, Iran
| | - Ahmad Rouhollahi
- Department of Analytical Chemistry, Faculty of Chemistry, K.N. Toosi University of Technology, Tehran, Iran
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Bao Y, Han K, Ding Z, Li Y, Li T, Guan M, Li G. A label-free electrochemiluminescence immunosensor for carbohydrate antigen 153 based on polypyrrole-luminol-AuNPs nanocomposites with bi-catalysis. SPECTROCHIMICA ACTA. PART A, MOLECULAR AND BIOMOLECULAR SPECTROSCOPY 2021; 253:119562. [PMID: 33611216 DOI: 10.1016/j.saa.2021.119562] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/25/2020] [Revised: 12/29/2020] [Accepted: 01/27/2021] [Indexed: 06/12/2023]
Abstract
Polypyrrole-luminol-AuNPs nanocomposites were prepared and used to develop a sensitive label-free electrochemiluminescence (ECL) immunosensor for carbohydrate antigen 153 (CA153) detection. Firstly, polypyrrole (PPY) nanoparticles were synthesized by a chemical oxidation method using FeCl3 as an oxidizing agent, then luminol and gold nanoparticles (AuNPs) were combined with PPY nanoparticles through electrostatic interaction to form PPY-luminol-AuNPs nanocomposites. The nanocomposites were characterized by transmission electron microscopy (TEM), UV-Vis absorption spectra, atomic emission spectrometry (AES), X-ray diffraction (XRD) and electrochemical impedance spectroscopy (EIS). Especially, iron element was also detected in the nanocomposites. The PPY-luminol-AuNPs nanocomposites showed excellent ECL activity due to the bi-catalysis of iron ion and gold nanoparticles on the ECL of luminol. Furthermore, the nanocomposites showed good film-forming property, and it can be fixed on electrode surface without the assistance of other film-forming materials. On this basis, an ECL immunosensor for CA153 was constructed by covalently immobilizing anti-CA153 on PPY-luminol-AuNPs modified indium-doped tin oxide (ITO) electrode. In the presence of CA153, a remarkable decrease in ECL signals was observed due to the formation of anti-CA153/CA153 complex. The immunosensor showed a good linear relationship in the concentration range of 0.001 to 700 U/mL for CA153, and the detection limit was 5.8 × 10-4 U/mL (S/N = 3). Furthermore, the ECL immunosensor was applied to the determination of CA153 in practical human serum sample.
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Affiliation(s)
- Ying Bao
- Xinjiang Key Laboratory of Energy Storage and Photoelectrocatalytic Materials, School of Chemistry and Chemical Engineering, Xinjiang Normal University, Urumqi, Xinjiang 830054, PR China
| | - Kexin Han
- Xinjiang Key Laboratory of Energy Storage and Photoelectrocatalytic Materials, School of Chemistry and Chemical Engineering, Xinjiang Normal University, Urumqi, Xinjiang 830054, PR China
| | - Zhifang Ding
- Xinjiang Key Laboratory of Energy Storage and Photoelectrocatalytic Materials, School of Chemistry and Chemical Engineering, Xinjiang Normal University, Urumqi, Xinjiang 830054, PR China
| | - Yue Li
- Xinjiang Key Laboratory of Energy Storage and Photoelectrocatalytic Materials, School of Chemistry and Chemical Engineering, Xinjiang Normal University, Urumqi, Xinjiang 830054, PR China
| | - Ting Li
- Xinjiang Key Laboratory of Energy Storage and Photoelectrocatalytic Materials, School of Chemistry and Chemical Engineering, Xinjiang Normal University, Urumqi, Xinjiang 830054, PR China
| | - Ming Guan
- Xinjiang Key Laboratory of Energy Storage and Photoelectrocatalytic Materials, School of Chemistry and Chemical Engineering, Xinjiang Normal University, Urumqi, Xinjiang 830054, PR China
| | - Guixin Li
- Xinjiang Key Laboratory of Energy Storage and Photoelectrocatalytic Materials, School of Chemistry and Chemical Engineering, Xinjiang Normal University, Urumqi, Xinjiang 830054, PR China.
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Mohadeseh Safaei, Beitollahi H, Shishehbore MR. Amplified Electrochemical Sensor Employing Fe3O4@SiO2/graphene Nanocomposite for Selective Determination of Folic Acid. JOURNAL OF ANALYTICAL CHEMISTRY 2020. [DOI: 10.1134/s1061934820010141] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/23/2022]
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Li S, Lei S, Yu Q, Zou L, Ye B. A novel electrochemical sensor for detecting hyperin with a nanocomposite of ZrO 2-SDS-SWCNTs as decoration. Talanta 2018; 185:453-460. [PMID: 29759227 DOI: 10.1016/j.talanta.2018.04.008] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/21/2017] [Revised: 03/24/2018] [Accepted: 04/02/2018] [Indexed: 01/16/2023]
Abstract
A novel high-sensitive electrochemical sensor with glassy carbon electrode (GCE) as support for hyperin determination is successfully designed and constructed, and the well-shaped nano-meter modified material is synthesized via a one-step and facile route. Functionalized with surfactant sodium dodecyl sulfate (SDS), Single-Walled Carbon Nanotubes (SWCNTs) are synchronously grafted with ZrO2 nanoparticles to develop into the as-prepared nano-composite (ZrO2-SDS-SWCNTs). Compared to the previous reports related with hyperin detection, the linear range gets wider and detection limit (LOD) becomes lower with the aid of this novel nano-composite modified glassy carbon electrode (ZrO2-SDS-SWCNTs/GCE). The crystalline phases and functionalization of the preparation process has been investigated by X-ray diffraction (XRD) and Fourier transform infrared (FT-IR) instrument analysis, respectively, and the micro-morphology of related modified materials is also visibly characterized by scanning electron microscope (SEM) and transmission electron microscope (TEM). In addition, electrochemical properties of the modified materials are comparably explored by means of impedance spectroscopy (EIS) and cyclic voltammograms (CV). According to the established calibration curve under optimized condition, the peak current (Differential pulse voltammetry (DPV) signal) keeps a linear relationship with hyperin concentration in the ranges of 1.0 × 10-9 - 3.0 × 10-7 mol L-1, meanwhile detection limit reaches as low as 5 × 10-10 mol L-1 (S/N = 3). As for practical applications, the proposed sensor has also worked well on sensitive hyperin determination in real species Abelmoschus manihot.
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Affiliation(s)
- Shuo Li
- College of Chemistry and Molecular Engineering, Zhengzhou University, Zhengzhou 450001, PR China
| | - Sheng Lei
- College of Chemistry and Molecular Engineering, Zhengzhou University, Zhengzhou 450001, PR China
| | - Qian Yu
- College of Chemistry and Molecular Engineering, Zhengzhou University, Zhengzhou 450001, PR China
| | - Lina Zou
- College of Chemistry and Molecular Engineering, Zhengzhou University, Zhengzhou 450001, PR China.
| | - Baoxian Ye
- College of Chemistry and Molecular Engineering, Zhengzhou University, Zhengzhou 450001, PR China.
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Beitollahi H, Yoonesfar R. Sensitive detection of sulfasalazine at a carbon paste electrode modified with NiO/CNT nanocomposite and ionic liquid in pharmaceutical and biological samples. INORG NANO-MET CHEM 2017. [DOI: 10.1080/24701556.2017.1357577] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/19/2022]
Affiliation(s)
- Hadi Beitollahi
- Environment Department, Institute of Science and High Technology and Environmental Sciences, Graduate University of Advanced Technology, Kerman, Iran
| | - Roghayeh Yoonesfar
- Department of Chemistry, Graduate University of Advanced Technology, Kerman, Iran
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