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Li L, Zhang LL, Zou J, Zou J, Duan LY, Gao Y, Peng G, Huang X, Lu L. Dual-emissive europium doped UiO-66-based ratiometric light-up biosensor for highly sensitive detection of histidinemia biomarker. Anal Chim Acta 2024; 1290:342202. [PMID: 38246745 DOI: 10.1016/j.aca.2024.342202] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/15/2023] [Revised: 12/04/2023] [Accepted: 01/01/2024] [Indexed: 01/23/2024]
Abstract
BACKGROUND Lanthanide metal-organic frameworks (Ln-MOFs) are a kind of emerging crystalline porous materials with high fluorescence and easy-to-tunable properties, making them ideal for sensing applications. However, current Ln-MOFs based fluorescent probes are primarily single-emissive or fluorescence-quenched, which greatly limited the detection performances such as sensitivity, accuracy and repeatability, thereby hindering their applications in efficient target monitoring and related disease diagnosis. To address these issues, the reasonable design of Ln-MOFs equipped with dual fluorescence emissions and light-up mode is urgently needed for a high-performance biosensor. RESULTS A dual-emissive europium doped UiO-66 (Eu@UiO-66-NH2-PMA)-based ratiometric fluorescent biosensing platform was constructed for highly sensitive and selective detection of the histidinemia biomarker-histidine (His). Eu@UiO-66-NH2-PMA (pyromellitic acid abbreviated as PMA) was synthesized utilizing a post-synthetic modification method via coordination interactions between the free -COOH of UiO-66-NH2-PMA and Eu3+, which exhibited characteristic peaks of broad ligand emission and sharp Eu3+ emissions simultaneously. Considering that Cu2+ had the excellent fluorescence quenching ability toward Eu3+ and superior affinity with His, it was deliberately introduced into the Eu@UiO-66-NH2-PMA, acting as active sites for target His responsiveness. The Eu@UiO-66-NH2-PMA/Cu2+/His ternary competition system demonstrated a low detection limit of 74 nM, excellent selectivity and good anti-interference capability that allowed for sensitive analysis of His levels in milk and human serum samples. SIGNIFICANCE Attributing to the superior luminescent properties, good stability and self-calibration capability of Eu@UiO-66-NH2-PMA, the developed ratiometric light-up sensing platform enabled sensitive, selective and credible analysis of His in complex practical samples, which might provide an available tool for food nutrition guideline and diagnostic applications of His related diseases.
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Affiliation(s)
- Li Li
- Key Laboratory of Chemical Utilization of Plant Resources of Nanchang, College of Chemistry and Materials, College of Science, Jiangxi Agricultural University, Nanchang, 330045, China
| | - Lin-Lin Zhang
- College of Food Science and Engineering, Jiangxi Agricultural University, Nanchang, 330045, China
| | - Jin Zou
- Key Laboratory of Chemical Utilization of Plant Resources of Nanchang, College of Chemistry and Materials, College of Science, Jiangxi Agricultural University, Nanchang, 330045, China
| | - Jiamin Zou
- Key Laboratory of Chemical Utilization of Plant Resources of Nanchang, College of Chemistry and Materials, College of Science, Jiangxi Agricultural University, Nanchang, 330045, China
| | - Lu-Ying Duan
- College of Food Science and Engineering, Jiangxi Agricultural University, Nanchang, 330045, China.
| | - Yansha Gao
- Key Laboratory of Chemical Utilization of Plant Resources of Nanchang, College of Chemistry and Materials, College of Science, Jiangxi Agricultural University, Nanchang, 330045, China
| | - Guanwei Peng
- Key Laboratory of Chemical Utilization of Plant Resources of Nanchang, College of Chemistry and Materials, College of Science, Jiangxi Agricultural University, Nanchang, 330045, China
| | - Xigen Huang
- Key Laboratory of Chemical Utilization of Plant Resources of Nanchang, College of Chemistry and Materials, College of Science, Jiangxi Agricultural University, Nanchang, 330045, China.
| | - Limin Lu
- Key Laboratory of Chemical Utilization of Plant Resources of Nanchang, College of Chemistry and Materials, College of Science, Jiangxi Agricultural University, Nanchang, 330045, China.
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Liu J, Wu H, Liu Y, Wang ZG. Colorimetric Sensor Based on the Oxidase-Mimic Supramolecular Catalyst for Selective and Sensitive Biomolecular Detection. ACS APPLIED MATERIALS & INTERFACES 2023; 15:48945-48951. [PMID: 37823579 DOI: 10.1021/acsami.3c09940] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 10/13/2023]
Abstract
We have engineered a colorimetric sensor capable of selective and sensitive detection of amino acids. This sensor employs a supramolecular copper-dependent oxidase mimic as the probe, stemming from our prior research. The oxidase mimic is constructed through the self-assembly of commercially available guanosine monophosphate (GMP), Fmoc-lysine, and Cu2+. It catalyzes the formation of a red product with a maximum absorbance at 510 nm. The changes in color and absorbance are responsive to both the concentrations and types of amino acids present. This effect is most pronounced in the presence of histidine, with a detection limit (LOD) of 6.4 nM. Furthermore, the catalytic probe can distinguish histidine from histamine and imidazole propionate, as well as 1-methyl-histidine from 3-methyl-histidine, based on their distinct coordination capacities with copper. This underscores the high selectivity of the sensing platform. Both theoretical simulations and experimental results (including UV-vis spectra, fluorescence, and EPR) indicate that the amino acids may engage in copper center coordination, thereby impeding O2 access to copper─a pivotal aspect of the oxidase catalysis. This sensing platform, characteristic of its swift response, simple fabrication, and exceptional sensitivity and selectivity, can also be applied to detect other biological analytes such as nucleotides. It holds potential for use in environmental and biochemical analyses.
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Affiliation(s)
- Junhong Liu
- State Key Laboratory of Organic-Inorganic Composites, Key Lab of Biomedical Materials of Natural Macromolecules (Beijing University of Chemical Technology, Ministry of Education), Beijing Laboratory of Biomedical Materials, College of Materials Science and Engineering, Beijing University of Chemical Technology, Beijing 100029, China
| | - Haifeng Wu
- State Key Laboratory of Organic-Inorganic Composites, Key Lab of Biomedical Materials of Natural Macromolecules (Beijing University of Chemical Technology, Ministry of Education), Beijing Laboratory of Biomedical Materials, College of Materials Science and Engineering, Beijing University of Chemical Technology, Beijing 100029, China
| | - Yuanxi Liu
- State Key Laboratory of Organic-Inorganic Composites, Key Lab of Biomedical Materials of Natural Macromolecules (Beijing University of Chemical Technology, Ministry of Education), Beijing Laboratory of Biomedical Materials, College of Materials Science and Engineering, Beijing University of Chemical Technology, Beijing 100029, China
| | - Zhen-Gang Wang
- State Key Laboratory of Organic-Inorganic Composites, Key Lab of Biomedical Materials of Natural Macromolecules (Beijing University of Chemical Technology, Ministry of Education), Beijing Laboratory of Biomedical Materials, College of Materials Science and Engineering, Beijing University of Chemical Technology, Beijing 100029, China
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Kusuma SAF, Harmonis JA, Pratiwi R, Hasanah AN. Gold Nanoparticle-Based Colorimetric Sensors: Properties and Application in Detection of Heavy Metals and Biological Molecules. SENSORS (BASEL, SWITZERLAND) 2023; 23:8172. [PMID: 37837002 PMCID: PMC10575141 DOI: 10.3390/s23198172] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/12/2023] [Revised: 09/18/2023] [Accepted: 09/27/2023] [Indexed: 10/15/2023]
Abstract
During the last decade, advances have been made in nanotechnology using nanomaterials, leading to improvements in their performance. Gold nanoparticles (AuNPs) have been widely used in the field of sensor analysis and are also combined with certain materials to obtain the desired characteristics. AuNPs are commonly used as colorimetric sensors in detection methods. In developing an ideal sensor, there are certain characteristics that must be met such as selectivity, sensitivity, accuracy, precision, and linearity, among others. Various methods for the synthesis of AuNPs and conjugation with other components have been carried out in order to obtain good characteristics for their application. AuNPs can be applied in the detection of both heavy metals and biological molecules. This review aimed at observing the role of AuNPs in its application. The synthesis of AuNPs for sensors will also be revealed, along with their characteristics suitable for this role. In the application method, the size and shape of the particles must be considered. AuNPs used in heavy metal detection have a particle size of around 15-50 nm; in the detection of biological molecules, the particle size of AuNPs used is 6-35 nm whereas in pharmaceutical compounds for cancer treatment and the detection of other drugs, the particle size used is 12-30 nm. The particle sizes did not correlate with the type of molecules regardless of whether it was a heavy metal, biological molecule, or pharmaceutical compound but depended on the properties of the molecule itself. In general, the best morphology for application in the detection process is a spherical shape to obtain good sensitivity and selectivity based on previous studies. Functionalization of AuNPs with conjugates/receptors can be carried out to increase the stability, sensitivity, selectivity, solubility, and plays a role in detecting biological compounds through conjugating AuNPs with biological molecules.
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Affiliation(s)
- Sri Agung Fitri Kusuma
- Department of Pharmaceutical Biology, Faculty of Pharmacy, Universitas Padjadjaran, Jalan Raya Bandung-Sumedang KM 21 Jatinangor, Bandung 45363, Indonesia
| | - Jacko Abiwaqash Harmonis
- Department of Pharmaceutical Analysis and Medicinal Chemistry, Faculty of Pharmacy, Universitas Padjadjaran, Jalan Raya Bandung-Sumedang KM 21 Jatinangor, Bandung 45363, Indonesia; (J.A.H.); (R.P.)
| | - Rimadani Pratiwi
- Department of Pharmaceutical Analysis and Medicinal Chemistry, Faculty of Pharmacy, Universitas Padjadjaran, Jalan Raya Bandung-Sumedang KM 21 Jatinangor, Bandung 45363, Indonesia; (J.A.H.); (R.P.)
| | - Aliya Nur Hasanah
- Department of Pharmaceutical Analysis and Medicinal Chemistry, Faculty of Pharmacy, Universitas Padjadjaran, Jalan Raya Bandung-Sumedang KM 21 Jatinangor, Bandung 45363, Indonesia; (J.A.H.); (R.P.)
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Linghu X, Wang S, Liu W, Wang R, Lu Y. Immunocolorimetric assay based on amplified gold nanoparticles and magnetic separation beads for detection of sesame allergens in food. ANALYTICAL METHODS : ADVANCING METHODS AND APPLICATIONS 2022; 14:4803-4812. [PMID: 36382410 DOI: 10.1039/d2ay01557a] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/16/2023]
Abstract
We have developed a magnetic separation-based immunocolorimetric assay to detect sesame allergens. Sesame monoclonal antibody (Ab) was modified onto gold nanoparticles (AuNPs) to create signal probes (AuNPs-Ab), and sesame allergens (SA) were attached to carboxyl-functionalized magnetic polystyrene microspheres (MPMs) to act as capture probes (MPMs-SA). Based on the competition format, the capture probes competed with the sesame allergens in the sample to bind the corresponding signal probes. When sesame allergens were present, two immune complexes (AuNPs-Ab@MPMs-SA and AuNPs-Ab@SA) were formed. The immune complex AuNPs-Ab@SA was used to quantify the sesame allergens in the sample. This immunoassay had a detection linear range from 50 to 800 μg L-1 with a limit of detection (LOD) of 45.53 μg L-1. Based on the optimized conditions, the recovery of sesame allergens in bread, biscuit, almond beverage, and energy bar samples was between 82.50% and 116.67%. The LODs for the bread, biscuit, almond beverage, and energy bar samples were 0.36, 0.36, 0.27, and 0.55 mg kg-1, respectively.
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Affiliation(s)
- Xiaopan Linghu
- Key Laboratory of Food Quality and Health of Tianjin, State Key Laboratory for Food Nutrition and Safety, College of Food Engineering and Biotechnology, Tianjin University of Science and Technology, Tianjin, 300457, China.
| | - Shasha Wang
- Key Laboratory of Food Quality and Health of Tianjin, State Key Laboratory for Food Nutrition and Safety, College of Food Engineering and Biotechnology, Tianjin University of Science and Technology, Tianjin, 300457, China.
| | - Wentao Liu
- Key Laboratory of Food Quality and Health of Tianjin, State Key Laboratory for Food Nutrition and Safety, College of Food Engineering and Biotechnology, Tianjin University of Science and Technology, Tianjin, 300457, China.
| | - Rui Wang
- Key Laboratory of Food Quality and Health of Tianjin, State Key Laboratory for Food Nutrition and Safety, College of Food Engineering and Biotechnology, Tianjin University of Science and Technology, Tianjin, 300457, China.
| | - Yang Lu
- Key Laboratory of Food Quality and Health of Tianjin, State Key Laboratory for Food Nutrition and Safety, College of Food Engineering and Biotechnology, Tianjin University of Science and Technology, Tianjin, 300457, China.
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Recent developments in the colorimetric sensing of biological molecules using gold nanoparticles-based probes. TALANTA OPEN 2022. [DOI: 10.1016/j.talo.2022.100122] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022] Open
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Jeyanthi D, Joel C, Bennie RB, Livingston DJ, Balakrishnan C. Crystal structure and chemosensing property of benzimidazole-based probe towards detection of multiple analytes – A combined experimental and DFT approach. J Photochem Photobiol A Chem 2022. [DOI: 10.1016/j.jphotochem.2022.113950] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/18/2022]
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Parshina AV, Safronova EY, Kolganova TS, Kuleshova VA, Bobreshova OV. MF-4SC Membranes Modified with Carboxylated Carbon Nanotubes for Potentiometric Determination of Alanine, Valine, and Phenylalanine in Alkaline Solutions. MEMBRANES AND MEMBRANE TECHNOLOGIES 2022. [DOI: 10.1134/s2517751622040072] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
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Ji J, Wu H, Wang D, Liu D, Chen X, Feng S. Green synthesis, characterization of Radix Hedysari-mediated silver nanoparticles and their use for sensitive colorimetric detection of Pb 2+ in the Yellow River medium. ANALYTICAL METHODS : ADVANCING METHODS AND APPLICATIONS 2022; 14:643-651. [PMID: 35080529 DOI: 10.1039/d1ay01852c] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/14/2023]
Abstract
In this study, a safe, rapid, and environment-friendly green synthesis of silver nanoparticles using the alcohol extract of Radix Hedysari (RH-AgNPs) was developed, the alcohol extract of Radix Hedysari (RH) acted as the reducing agent, stabilizer, and modifier. The main components of RH were determined using high-performance liquid chromatography (HPLC). The particle size and morphology of RH-AgNPs were optimized and characterized by a series of techniques. The size distribution, zeta potential, element distribution, and crystalline nature of RH-AgNPs were all determined. It was indicated that RH-AgNPs showed great sensitivity for lead ion (Pb2+) detection with a limit of detection (LOD) of 1.5 μM with a wide range of 10-500 μM. The selectivity was also explored for common metal ions. RH-AgNPs were then applied to the detection of Pb2+ in spiked Yellow River samples, and the possible mechanism is based on the crosslinking reaction between the hydroxide radical, carboxylate radical and Pb2+.
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Affiliation(s)
- Jiahui Ji
- College of Pharmacy, Master of Pharmaceutical Analysis, Lanzhou University, Gansu Province, China.
| | - Huifang Wu
- College of Pharmacy, Master of Pharmaceutical Analysis, Lanzhou University, Gansu Province, China.
| | - Donghan Wang
- College of Pharmacy, Master of Pharmaceutical Analysis, Lanzhou University, Gansu Province, China.
| | - Dan Liu
- College of Pharmacy, Master of Pharmaceutical Analysis, Lanzhou University, Gansu Province, China.
| | - Xinyue Chen
- College of Pharmacy, Master of Pharmaceutical Analysis, Lanzhou University, Gansu Province, China.
| | - Shilan Feng
- College of Pharmacy, Master of Pharmaceutical Analysis, Lanzhou University, Gansu Province, China.
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The dual-mode platform based on cysteamine-stabilized gold nanoparticles for the high throughput and on-site detection of bongkrekic acid. Food Control 2022. [DOI: 10.1016/j.foodcont.2022.108887] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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Bartolomé M, Contento AM, Villaseñor MJ, Ríos Á. Innovative and versatile nanoplasmonic approach for the full sensing of proteinogenic aminoacids in nutritional supplements. Talanta 2022; 237:122976. [PMID: 34736698 DOI: 10.1016/j.talanta.2021.122976] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/27/2021] [Revised: 10/10/2021] [Accepted: 10/15/2021] [Indexed: 10/20/2022]
Abstract
A current nourishment issue is the development of smart and reliable analytical strategies to control in a simple way main bioactive compounds of nutritional supplements whose increasing use is deemed a trend nowadays. With this aim a quick and highly sensitive plasmonic sensor using simple citrate coated gold nanoparticles (AuNPs) as optical probe, was developed for both qualitative and quantitative global assessment of all the proteinogenic amino acids in nutritional supplements. AuNPs of five different sizes (from 19 to 74 nm) were synthesized, characterized and evaluated as optimal transductor element for the sensing approach. Critical physic-chemical conditions controlling aggregation (pH, incubation time, AuNPs amount and ionic strength) were investigated on the main five types of aas, structurally different attending to their R-side chain and with expected distinctive behaviour on aggregation mechanisms, which are also discussed. All proteinogenic amino acids induced AuNPs aggregation at low pH (2.5) causing a change in the colour solution from red to blue, as well as a redshift in the plasmon band from 518 nm (disperse NPs) to 650 nm (aggregated NPs). Based on this sensing approach two different strategies are allowed, a preliminary qualitative/semi-quantitative screening just by the naked eye (simple spot test) and a second quantitative confirmation procedure using the analytical signal (A650/A518). Reliability of quantitative approach was assessed by an exhaustive validation procedure, where matrix effects and potential interferences usually present in commercial samples and affecting the analytical signal were mainly focussed. The results for the analysis of complex nutritional samples were validated by means of a statistical comparison with those ones of the official reference Kjeldahl method (paired Student test-t) at a 95% confidence level. This is the first sensing approach able to provide the global estimation of proteinogenic aas amount based on their simply AuNPs aggregation induction, irrespectively of their R-side chain structure.
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Affiliation(s)
- Manuel Bartolomé
- Department of Analytical Chemistry and Food Technology, Faculty of Chemical Science and Technology, University of Castilla-La Mancha, 13071, Ciudad Real, Spain; Regional Institute for Applied Chemistry Research (IRICA), 13071, Ciudad Real, Spain.
| | - Ana M Contento
- Department of Analytical Chemistry and Food Technology, Faculty of Chemical Science and Technology, University of Castilla-La Mancha, 13071, Ciudad Real, Spain; Regional Institute for Applied Chemistry Research (IRICA), 13071, Ciudad Real, Spain.
| | - María J Villaseñor
- Department of Analytical Chemistry and Food Technology, Faculty of Chemical Science and Technology, University of Castilla-La Mancha, 13071, Ciudad Real, Spain; Department of Analytical Chemistry, Industrial Engineering School, University of Castilla-La Mancha, 13071, Ciudad Real, Spain.
| | - Ángel Ríos
- Department of Analytical Chemistry and Food Technology, Faculty of Chemical Science and Technology, University of Castilla-La Mancha, 13071, Ciudad Real, Spain; Regional Institute for Applied Chemistry Research (IRICA), 13071, Ciudad Real, Spain.
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Yao SL, Xu H, Zheng TF, Peng Y, Liu SJ, Chen JL, Wen HR. Stable bifunctional ZnII-based sensor toward acetylacetone and L-histidine by fluorescence red shift and turn-on effect. CrystEngComm 2022. [DOI: 10.1039/d2ce00026a] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
A new coordination polymer [Zn(bbip)(NH2-BDC)]n (JXUST-15, bbip = 2,6-bis(benzimidazol-1-yl)pyridine and NH2-H2BDC = 2-aminoterephthalic acid) has been synthesized by mixed ligand strategy. The structure analysis shows that JXUST-15 takes a two-dimensional...
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Mohan B, Modi K, Parikh J, Ma S, Kumar S, Kumar Manar K, Sun F, You H, Ren P. Efficacy of 2-nitrobenzylidene-hydrazine-based selective and rapid sensor for Cu2+ ions, histidine, and tyrosine: Spectral and computational study. J Photochem Photobiol A Chem 2022. [DOI: 10.1016/j.jphotochem.2021.113557] [Citation(s) in RCA: 5] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/15/2022]
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Karazan ZM, Roushani M. A novel electrochemical sensor for the determination of histidine based on a molecularly imprinted copolymer. ANALYTICAL METHODS : ADVANCING METHODS AND APPLICATIONS 2021; 13:4904-4910. [PMID: 34606533 DOI: 10.1039/d1ay01492g] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/13/2023]
Abstract
The present study aimed to report a novel electrochemical sensor through electropolymerization of o-aminophenol (o-AP) and m-dihydroxy benzene (m-DB) as monomers on the surface of the glassy carbon electrode (GCE) for the determination of histidine (His) as a template molecule. The developed sensor exhibited satisfactory sensitivity and high selectivity, and also offered a linear range between 0.005 and 10.0 μM with a detection limit of 0.9 nM. Finally, it is worth mentioning that we also aimed at employing the proposed sensor for the detection of His in blood serum samples.
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Affiliation(s)
- Zahra Mirzaei Karazan
- Department of Chemistry, Faculty of Sciences, Ilam University, P. O. Box, Ilam 69315-516, Iran.
| | - Mahmoud Roushani
- Department of Chemistry, Faculty of Sciences, Ilam University, P. O. Box, Ilam 69315-516, Iran.
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Advances in Colorimetric Assay Based on AuNPs Modified by Proteins and Nucleic Acid Aptamers. CHEMOSENSORS 2021. [DOI: 10.3390/chemosensors9100281] [Citation(s) in RCA: 12] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 02/07/2023]
Abstract
This review is focused on the biosensing assay based on AuNPs (AuNPs) modified by proteins, peptides and nucleic acid aptamers. The unique physical properties of AuNPs allow their modification by proteins, peptides or nucleic acid aptamers by chemisorption as well as other methods including physical adsorption and covalent immobilization using carbodiimide chemistry or based on strong binding of biotinylated receptors on neutravidin, streptavidin or avidin. The methods of AuNPs preparation, their chemical modification and application in several biosensing assays are presented with focus on application of nucleic acid aptamers for colorimetry assay for determination of antibiotics and bacteria in food samples.
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Yadav M, Das M, Bhatt S, Shah P, Jadeja R, Thakore S. Rapid selective optical detection of sulfur containing agrochemicals and amino acid by functionalized cyclodextrin polymer derived gold nanoprobes. Microchem J 2021. [DOI: 10.1016/j.microc.2021.106630] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/31/2022]
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Silver nanopentagons-based colorimetric sensor for high-selective chromium(III) detection in aqueous solution with polyvinylpyrrolidone and citrate. CHEMICAL PAPERS 2021. [DOI: 10.1007/s11696-021-01729-1] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 02/07/2023]
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