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Kurup C, Mohd-Naim NF, Keasberry NA, Zakaria SNA, Bansal V, Ahmed MU. Label-Free Electrochemiluminescence Nano-aptasensor for the Ultrasensitive Detection of ApoA1 in Human Serum. ACS OMEGA 2022; 7:38709-38716. [PMID: 36340071 PMCID: PMC9631400 DOI: 10.1021/acsomega.2c04300] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/08/2022] [Accepted: 09/06/2022] [Indexed: 05/11/2023]
Abstract
A molybdenum sulfide/zirconium oxide/Nafion (MoS2/ZrO2/Naf) based electrochemiluminescence (ECL) aptasensor for the selective and ultrasensitive detection of ApoA1 is proposed, with Ru(bpy)3 2+ as the luminophore. The chitosan (CS) modification on the nanocomposite layer allowed glutaraldehyde (GLUT) cross-linking, resulting in the immobilization of ApoA1 aptamers. Scanning electron microscopy, tunneling electron microscopy, and energy dispersive X-ray spectroscopy were used to characterize the nanocomposite, while electrochemiluminescence (ECL), cyclic voltammetry, and electrochemical impedance spectroscopy were used to analyze the aptasensor assembly. The nanocomposite was used as an electrode modifier, which increased the intensity of the ECL signal. Due to the anionic environment produced on the sensor surface following the specific interaction of the ApoA1 biomarker with the sensor, more Ru(bpy)3 2+ were able to be electrostatically attached to the aptamer-ApoA1 complex, resulting in enhanced ECL signal. The ECL aptasensor demonstrated outstanding sensitivity for ApoA1 under optimal experimental conditions, with a detection limit of 53 fg/mL and a wide linear dynamic range of 0.1-1000 pg/mL. The potential practical applicability of this aptasensor was validated by analyzing ApoA1 in human serum samples, with recovery rates of 94-108% (n = 3). The proposed assay was found to be substantially better compared to the commercially available enzyme-linked immunosorbent assay method, as reflected from over 1500 times improvement in the detection limit for ApoA1.
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Affiliation(s)
- Chitra
P. Kurup
- Biosensors
and Nanobiotechnology Laboratory, Integrated Science Building, Faculty
of Science, Universiti Brunei Darussalam, Jalan Tungku Link, GadongBE 1410, Brunei Darussalam
| | - Noor F. Mohd-Naim
- Biosensors
and Nanobiotechnology Laboratory, Integrated Science Building, Faculty
of Science, Universiti Brunei Darussalam, Jalan Tungku Link, GadongBE 1410, Brunei Darussalam
- PAPRSB
Institute of Health Sciences, Universiti
Brunei Darussalam, Jalan Tungku Link, GadongBE 1410, Brunei Darussalam
| | - Natasha A. Keasberry
- Biosensors
and Nanobiotechnology Laboratory, Integrated Science Building, Faculty
of Science, Universiti Brunei Darussalam, Jalan Tungku Link, GadongBE 1410, Brunei Darussalam
| | - Siti N. A. Zakaria
- Biosensors
and Nanobiotechnology Laboratory, Integrated Science Building, Faculty
of Science, Universiti Brunei Darussalam, Jalan Tungku Link, GadongBE 1410, Brunei Darussalam
| | - Vipul Bansal
- Ian
Potter NanoBioSensing Facility, NanoBiotechnology Research Laboratory
(NBRL), School of Science, RMIT University, GPO Box 2476, Melbourne, Victoria3000, Australia
| | - Minhaz U. Ahmed
- Biosensors
and Nanobiotechnology Laboratory, Integrated Science Building, Faculty
of Science, Universiti Brunei Darussalam, Jalan Tungku Link, GadongBE 1410, Brunei Darussalam
- ;
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Saravanakumar V, Rajagopal V, Kathiresan M, Suryanarayanan V, Anandan S, Ho KC. Cu-MOF derived CuO nanoparticle decorated amorphous carbon as an electrochemical platform for the sensing of caffeine in real samples. J Taiwan Inst Chem Eng 2022. [DOI: 10.1016/j.jtice.2022.104248] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/19/2022]
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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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Kartika AE, Setiyanto H, Manurung RV, Jenie SNA, Saraswaty V. Silver Nanoparticles Coupled with Graphene Nanoplatelets Modified Screen-Printed Carbon Electrodes for Rhodamine B Detection in Food Products. ACS OMEGA 2021; 6:31477-31484. [PMID: 34869974 PMCID: PMC8637599 DOI: 10.1021/acsomega.1c03414] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/29/2021] [Accepted: 11/09/2021] [Indexed: 05/05/2023]
Abstract
A rapid, simple, and sensitive voltammetric sensor has been fabricated to determine Rhodamine B (RhB), a textile coloring agent. Silver nanoparticles (AgNPs) were synthesized by the chemical reduction method of silver nitrate and sodium citrate. Graphene nanoplatelets (GPLs) and AgNPs were drop-casted on the surface of a working electrode of a screen-printed carbon electrode (SPCE), forming the SPCE-GPLs/AgNPs samples. Scanning electron microscopy-energy dispersive X-ray and cyclic voltammetry confirmed the altered surface of the SPCE. The square wave voltammetry was used for the electrochemical determination of RhB. The SPCE-GPLs/AgNPs demonstrated electrochemical responses to detect RhB with a linear range of 2-100 μM, and the limit of detection was 1.94 μM. The SPCE-GPLs/AgNPs demonstrated a selective detection of RhB in the presence of common interfering compounds present in the food samples, including sucrose and monosodium glutamate. Furthermore, the sensor presented good reproducibility as well as repeatability in the detection of RhB. When the sensor was used to determine RhB in an actual food sample, similar results were shown as suggested by UV-vis spectroscopy analysis. Hence, the fabricated sensor can be applied for the detection of RhB in food samples.
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Affiliation(s)
- Andi Eka Kartika
- Department
of Chemistry (Analytical Chemistry Research Group), Faculty of Mathematics
and Natural Sciences, Bandung Institute
of Technology, Bandung 40132, Indonesia
| | - Henry Setiyanto
- Department
of Chemistry (Analytical Chemistry Research Group), Faculty of Mathematics
and Natural Sciences, Bandung Institute
of Technology, Bandung 40132, Indonesia
- . Fax: +62-22-2504154. Phone: +62-22-2502103
| | - Robeth Viktoria Manurung
- Research
Center for Electronics & Telecommunication, National Research and Innovation Agency Republic of Indonesia, Bandung 40135, Indonesia
- . Phone: +62 815 871 4667
| | - Siti Nurul Aisyiyah Jenie
- Research
Center for Chemistry, National Research
and Innovation Agency Republic of Indonesia, Tangerang Selatan 15314 Indonesia
| | - Vienna Saraswaty
- Research
Unit for Clean Technology, National Research
and Innovation Agency Republic of Indonesia, Bandung 40135, Indonesia
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Luchiari NDC, da Silva GA, Marasco Júnior CA, de Lima Gomes PCF. Development of miniaturized fluorimetric device for caffeine determination using a smartphone. RSC Adv 2019; 9:35033-35038. [PMID: 35530710 PMCID: PMC9074131 DOI: 10.1039/c9ra06220c] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/09/2019] [Accepted: 10/06/2019] [Indexed: 11/30/2022] Open
Abstract
Caffeine is an element that is consumed worldwide. It is present in many products such as beverages, chocolate, coffee, tea, energy drinks and medicines. Portable 3D devices working together with colorimetric and fluorimetric reactions have been able to determine the presence of caffeine in different kinds of samples. Also, digital image-based methods using smartphones have conferred portability and accessibility to miniaturized devices that are innovative and promising options for quick and low cost analyses. This study proposes a miniaturized fluorimetric device to determine caffeine by digital image using a smartphone. The OpenCamera app was used to capture images that were processed using ImageJ software to obtain RGB channels values. The red (R) channel signal intensity was selected as the analytical response. The device developed was applied to determine caffeine in an energy drink and medicines. The method developed presented a linear range from 100 to 600 mg L−1 of caffeine, and quantification (LOQ) and detection (LOD) limits of 100 mg L−1 and 30.0 mg L−1, respectively. The caffeine concentration found in the products analyzed was 328 mg L−1 (±2.5%) for the energy drink, 345 mg L−1 (±15%) for medicine A and 322 mg L−1 (±7.3%) for medicine B. The proposed device presented important characteristics such as low cost, required small volumes of reagents and samples, quick analysis, portability and suitable to be applied in complex matrices. This study proposes a miniaturized fluorimetric device to determine caffeine in an energy drink and medicines by digital image using a smartphone.![]()
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Affiliation(s)
- Natália da Costa Luchiari
- Department of Analytical Chemistry, Unesp, National Institute for Alternative Technologies of Detection, Toxicological Evaluation and Removal of Micropollutants and Radioactives (INCT-DATREM), Institute of Chemistry P.O. Box 355 14800-900 Araraquara (SP) Brazil
| | - Gabrielen Alves da Silva
- Department of Analytical Chemistry, Unesp, National Institute for Alternative Technologies of Detection, Toxicological Evaluation and Removal of Micropollutants and Radioactives (INCT-DATREM), Institute of Chemistry P.O. Box 355 14800-900 Araraquara (SP) Brazil
| | - César Augusto Marasco Júnior
- Department of Analytical Chemistry, Unesp, National Institute for Alternative Technologies of Detection, Toxicological Evaluation and Removal of Micropollutants and Radioactives (INCT-DATREM), Institute of Chemistry P.O. Box 355 14800-900 Araraquara (SP) Brazil
| | - Paulo Clairmont Feitosa de Lima Gomes
- Department of Analytical Chemistry, Unesp, National Institute for Alternative Technologies of Detection, Toxicological Evaluation and Removal of Micropollutants and Radioactives (INCT-DATREM), Institute of Chemistry P.O. Box 355 14800-900 Araraquara (SP) Brazil
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Simultaneous Voltammetric Detection of Acetaminophen and Caffeine Base on Cassava Starch—Fe3O4 Nanoparticles Modified Glassy Carbon Electrode. CHEMOSENSORS 2019. [DOI: 10.3390/chemosensors7040049] [Citation(s) in RCA: 18] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/27/2023]
Abstract
The new molecularly imprinted polymer (MIP) membrane based on cassava starch—Fe3O4—was developed to detect acetaminophen and caffeine simultaneously with the differential pulse voltammetry (DPV) method. Cassava starch was reacted with sodium tripolyphosphate (STPP) as a crosslinking agent, while acetaminophen and caffeine were added as templates. The Fe3O4 nanoparticles in the composite were added to increase the sensor’s sensitivity. The experimental results show that the ratio between cassava starch:STPP:acetaminophen/caffeine in the mixture for MIP membranes influences the sensitivity of the sensor obtained. MIP membranes with the best sensitivity is produced at a mixture ratio of 2:2:1. The sensor performance is also affected by the pH of the solution and the type of buffer solution used. The sensor works very well at pH 2 in PB solution. Sensors produced from GCE modified with MIP membrane from cassava starch—Fe3O4 with acetaminophen and caffeine as templates have linear range concentrations, respectively, at 50–2000 µM and 50–900 µM. Sensor sensitivity was 0.5306 A/M against acetaminophen and 0.4314 A/M against caffeine with Limit of Detection (LoD), respectively, 16 and 23 µM. Sensor selectivity and sensitivity are better than those without MIP and can be applied for the determination of the content of acetaminophen in headache medicine, with an accuracy of 96–99% and with Relative Standard Deviation (RSD) 0.9–2.56%.
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Apetrei C, Iticescu C, Georgescu LP. Multisensory System Used for the Analysis of the Water in the Lower Area of River Danube. NANOMATERIALS 2019; 9:nano9060891. [PMID: 31212988 PMCID: PMC6630530 DOI: 10.3390/nano9060891] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 04/15/2019] [Revised: 06/04/2019] [Accepted: 06/13/2019] [Indexed: 12/20/2022]
Abstract
The present paper describes the development of a multisensory system for the analysis of the natural water in the Danube, water collected in the neighboring area of Galati City. The multisensory system consists of a sensor array made up of six screen-printed sensors based on electroactive compounds (Cobalt phthalocyanine, Meldola’s Blue, Prussian Blue) and nanomaterials (Multi-Walled Carbon Nanotubes, Multi-Walled Graphene, Gold Nanoparticles). The measurements with the sensors array were performed by using cyclic voltammetry. The cyclic voltammograms recorded in the Danube natural water show redox processes related to the electrochemical activity of the compounds in the water samples or of the electro-active compounds in the sensors detector element. These processes are strongly influenced by the composition and physico-chemical properties of the water samples, such as the ionic strength or the pH. The multivariate data analysis was performed by using the principal component analysis (PCA) and the discriminant factor analysis (DFA), the water samples being discriminated according to the collection point. In order to confirm the observed classes, the partial least squares discriminant analysis (PLS-DA) method was used. The classification of the samples according to the collection point could be made accurately and with very few errors. The correlations established between the voltammetric data and the results of the physico-chemical analyses by using the PLS1 method were very good, the correlation coefficients exceeding 0.9. Moreover, the predictive capacity of the multisensory system is very good, the differences between the measured and the predicted values being less than 3%. The multisensory system based on voltammetric sensors and on multivariate data analysis methods is a viable and useful tool for natural water analysis.
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Affiliation(s)
- Constantin Apetrei
- Department of Chemistry, Physics and Environment, The European Centre of Excellence for the Environment, Faculty of Sciences and Environment, "Dunarea de Jos" University of Galati, 800008 Galati, Romania.
| | - Catalina Iticescu
- Department of Chemistry, Physics and Environment, The European Centre of Excellence for the Environment, Faculty of Sciences and Environment, "Dunarea de Jos" University of Galati, 800008 Galati, Romania.
| | - Lucian Puiu Georgescu
- Department of Chemistry, Physics and Environment, The European Centre of Excellence for the Environment, Faculty of Sciences and Environment, "Dunarea de Jos" University of Galati, 800008 Galati, Romania.
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