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Côco AS, Campos FV, Díaz CAR, Guimarães MCC, Prado AR, de Oliveira JP. Localized Surface Plasmon Resonance-Based Nanosensor for Rapid Detection of Glyphosate in Food Samples. Biosensors (Basel) 2023; 13:bios13050512. [PMID: 37232873 DOI: 10.3390/bios13050512] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/04/2023] [Revised: 04/26/2023] [Accepted: 04/27/2023] [Indexed: 05/27/2023]
Abstract
In this study, we developed a biosensor based on the localized surface plasmon resonance (LSPR) phenomenon of gold nanoparticles (AuNPs) to detect the widely used herbicide glyphosate in food samples. To do so, either cysteamine or a specific antibody for glyphosate were conjugated to the surface of the nanoparticles. AuNPs were synthesized using the sodium citrate reduction method and had their concentration determined via inductively plasma coupled mass spectrometry. Their optical properties were analyzed using UV-vis spectroscopy, X-ray diffraction, and transmission electron microscopy. Functionalized AuNPs were further characterized via Fourier-transform infrared spectroscopy, Raman scattering, Zeta potential, and dynamic light scattering. Both conjugates succeeded in detecting the presence of glyphosate in the colloid, although nanoparticles functionalized with cysteamine tended to aggregate at high concentrations of the herbicide. On the other hand, AuNPs functionalized with anti-glyphosate functioned at a broad concentration range and successfully identified the presence of the herbicide in non-organic coffee samples and when it was added to an organic coffee sample. This study demonstrates the potential of AuNP-based biosensors to detect glyphosate in food samples. The low-cost and specificity of these biosensors make them a viable alternative to current methods for detecting glyphosate in foodstuffs.
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Affiliation(s)
- Ariany Soares Côco
- Functional Nanomaterials Laboratory, Morphology Department, Federal University of Espírito Santo (UFES), Av Marechal Campos 1468, Vitória 29040-090, ES, Brazil
| | - Fabiana Vasconcelos Campos
- Functional Nanomaterials Laboratory, Morphology Department, Federal University of Espírito Santo (UFES), Av Marechal Campos 1468, Vitória 29040-090, ES, Brazil
| | - Camilo Arturo Rodríguez Díaz
- Telecommunications Laboratory, Electrical Engineering Department, Federal University of Espírito Santo (UFES), Av Fernando Ferrari 514, Vitória 29075-910, ES, Brazil
| | - Marco César Cunegundes Guimarães
- Functional Nanomaterials Laboratory, Morphology Department, Federal University of Espírito Santo (UFES), Av Marechal Campos 1468, Vitória 29040-090, ES, Brazil
| | - Adilson Ribeiro Prado
- Federal Institute of Espírito Santo (IFES), km 6.5 ES 010, Vitória 29173-087, ES, Brazil
| | - Jairo Pinto de Oliveira
- Functional Nanomaterials Laboratory, Morphology Department, Federal University of Espírito Santo (UFES), Av Marechal Campos 1468, Vitória 29040-090, ES, Brazil
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Pereira RHA, Keijok WJ, Prado AR, de Oliveira JP, Guimarães MCC. Rapid and sensitive detection of ochratoxin A using antibody-conjugated gold nanoparticles based on Localized Surface Plasmon Resonance. Toxicon 2021; 199:139-144. [PMID: 34153309 DOI: 10.1016/j.toxicon.2021.06.012] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/14/2021] [Revised: 06/11/2021] [Accepted: 06/15/2021] [Indexed: 11/27/2022]
Abstract
The regulation of tolerable levels of ochratoxin A in food for human and animal consumption has been defined in some countries. To meet these levels, simpler, more efficient, and faster analytical methods are being developed to facilitate the identification of this dangerous contaminant in food. Here, we combined gold nanoparticles (AuNPs) with anti-ochratoxin A (OTA) IgG to detect elementary levels of OTA based on Localized Surface Plasmon Resonance. AuNPs were prepared with trisodium citrate and characterized by UV-visible spectroscopy, X-ray, dynamic light scattering, and transmission electron microscopy. The conjugation of AuNPs to IgG anti-OTA was confirmed by bathochromic shift (UV-vis) and RAMAN spectroscopy. The sensitivity of the nanosensor was investigated by measuring LSPR band λmax shifts. Our results suggest this assay is highly sensitive, with a lower detection limit of about 0.001 pg mL-1. The LSPR nanosensor reduced detection limits by roughly 10 times compared to other methods. We demonstrated that the approach investigated here is a rapid and sensitive method for OTA detection.
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Affiliation(s)
| | | | | | - Jairo Pinto de Oliveira
- Federal University of Espirito Santo, Av Marechal Campos1468, Vitoria, ES, 29.040-090, Brazil
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Keijok WJ, Pereira RHA, Alvarez LAC, Prado AR, da Silva AR, Ribeiro J, de Oliveira JP, Guimarães MCC. Controlled biosynthesis of gold nanoparticles with Coffea arabica using factorial design. Sci Rep 2019; 9:16019. [PMID: 31690887 PMCID: PMC6831671 DOI: 10.1038/s41598-019-52496-9] [Citation(s) in RCA: 43] [Impact Index Per Article: 8.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/14/2019] [Accepted: 10/17/2019] [Indexed: 12/15/2022] Open
Abstract
Green synthesis of metallic nanoparticles has become incredibly popular, mainly by minimizing problems of environmental contamination and by being able to reduce, stabilize and potentially functionalize nanomaterials. Such compounds have possible applications in various areas, e.g., pharmaceuticals (drug delivery systems, cosmetics), textile industry (clothing with antimicrobial properties), diagnostic medicine (imaging, high efficiency biosensors), energy (solar panels), bioremediation, among others. However, the lack of reproducibility and information on the control mechanisms during synthesis have made the application of green-synthesized nanoparticles unfeasible. Thus, this study proposed the investigation of the main mechanisms affecting synthesis control, using factorial design for the preparation of gold nanoparticles with extract of Coffea arabica. We obtained stable (Zeta Potential, UV-vis and DLS), monodisperse, and quasi-spherical (TEM) nanoparticles, which presented adsorbed aromatic molecules (FTIR and RAMAN) and defined crystal structure (XRD), proving that the plant extract acted as a reducing agent, as well as a stabilizer and functionalizer for the synthesized nanostructures. The factorial design employed here to obtain gold nanoparticles with Coffea arabica extract allowed for a controlled and reproducible synthesis, enabling new possibilities for the application in several fields.
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Affiliation(s)
- Wanderson Juvencio Keijok
- Federal University of Espírito Santo, Department of Morphological Sciences, Vitória, 29047-10, Brazil
| | | | | | - Adilson Ribeiro Prado
- Federal Institute of Espírito Santo, Department of chemistry, Serra, 29173-087, Brazil
| | - André Romero da Silva
- Federal Institute of Espírito Santo, Department of chemistry, Aracruz, 29192-733, Brazil
| | - Josimar Ribeiro
- Federal University of Espírito Santo, Department of chemistry, Vitória, 29075-910, Brazil
| | - Jairo Pinto de Oliveira
- Federal University of Espírito Santo, Department of Morphological Sciences, Vitória, 29047-10, Brazil
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Pereira RHA, Prado AR, Caro LFCD, Zanardo TÉC, Alencar AP, Nogueira BV. A non-linear mathematical model using optical sensor to predict heart decellularization efficacy. Sci Rep 2019; 9:12211. [PMID: 31434981 PMCID: PMC6704168 DOI: 10.1038/s41598-019-48659-3] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/07/2018] [Accepted: 08/07/2019] [Indexed: 12/14/2022] Open
Abstract
One of the main problems of the decellularization technique is the subjectivity of the final evaluation of its efficacy in individual organs. This problem can result in restricted cell repopulation reproducibility and worse responses to transplant tissues. Our proposal is to analyze the optical profiles produced by hearts during perfusion decellularization, as an additional method for evaluating the decellularization process of each individual organ. An apparatus comprised of a structured LED source and photo detector on an adjustable base was developed to capture the relationship between transmitted light during the perfusion of murine hearts, and residual DNA content. Voltage-time graphic records were used to identify a nonlinear mathematical model to discriminate between decellularizations with remaining DNA above (Incomplete Decellularization) and below (Complete Decellularization) the standardized limits. The results indicate that temporal optical evaluation of the process enables inefficient cell removal to be predicted in the initial stages, regardless of the apparent transparency of the organ. Our open system also creates new possibilities to add distinct photo detectors, such as for specific wavelengths, image acquisition, and physical-chemical evaluation of the scaffold, in order to collect different kinds of information, from dozens of studies. These data, when compiled and submitted to machine learning techniques, have the potential to initiate an exponential advance in tissue bioengineering research.
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Affiliation(s)
- Rayssa Helena Arruda Pereira
- Carlos Alberto Redins Cell Ultrastructure Laboratory (LUCCAR) and Tissue Engineering Core, Department of Morphology - Health Sciences Center, Federal University of Espírito Santo (UFES), Vitória, ES, Brazil.,Biotechnology Graduate Program - Rede Nordeste de Biotecnologia (RENORBIO), Vitória, ES, Brazil
| | - Adilson Ribeiro Prado
- Department of Control Engineering and Automation, Federal Institute of Espírito Santo, Serra, ES, Brazil
| | | | - Tadeu Ériton Caliman Zanardo
- Carlos Alberto Redins Cell Ultrastructure Laboratory (LUCCAR) and Tissue Engineering Core, Department of Morphology - Health Sciences Center, Federal University of Espírito Santo (UFES), Vitória, ES, Brazil.,Biotechnology Graduate Program - Rede Nordeste de Biotecnologia (RENORBIO), Vitória, ES, Brazil
| | - Airlane Pereira Alencar
- Department of Statistic, Institute of Mathematics and Statics, São Paulo University, São Paulo, SP, Brazil
| | - Breno Valentim Nogueira
- Carlos Alberto Redins Cell Ultrastructure Laboratory (LUCCAR) and Tissue Engineering Core, Department of Morphology - Health Sciences Center, Federal University of Espírito Santo (UFES), Vitória, ES, Brazil. .,Biotechnology Graduate Program - Rede Nordeste de Biotecnologia (RENORBIO), Vitória, ES, Brazil.
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Figueira RL, Gonçalves FL, Prado AR, Ribeiro MC, Costa KM, Silva OCE, Sbragia L. Ventilation-induced changes correlate to pulmonary vascular response and VEGF, VEGFR-1/2, and eNOS expression in the rat model of postnatal hypoxia. ACTA ACUST UNITED AC 2018; 51:e7169. [PMID: 30304094 PMCID: PMC6180352 DOI: 10.1590/1414-431x20187169] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/28/2017] [Accepted: 07/24/2018] [Indexed: 11/22/2022]
Abstract
Neonatal asphyxia occurs due to reduction in oxygen supply to vital organs in the newborn. Rapid restoration of oxygen to the lungs after a long period of asphyxia can cause lung injury and decline of respiratory function, which result from the activity of molecules that induce vascular changes in the lung such as nitric oxide (NO) and vascular endothelial growth factors (VEGF). In this study, we evaluated the pulmonary and vascular morphometry of rats submitted to the model of neonatal asphyxia and mechanical ventilation, their expression of pulmonary VEGF, VEGF receptors (VEGFR-1/VEGFR-2), and endothelial NO synthase (eNOS). Neonate Sprague-Dawley rats (CEUA #043/2011) were divided into four groups (n=8 each): control (C), control submitted to ventilation (CV), hypoxia (H), and hypoxia submitted to ventilation (HV). The fetuses were harvested at 21.5 days of gestation. The morphometric variables measured were body weight (BW), total lung weight (TLW), left lung weight (LLW), and TLW/BW ratio. Pulmonary vascular measurements, VEGFR-1, VEGFR-2, VEGF, and eNOS immunohistochemistry were performed. The morphometric analysis showed decreased TLW and TLW/BW ratio in HV compared to C and H (P<0.005). Immunohistochemistry showed increased VEGFR-2/VEGF and decreased VEGFR-1 expression in H (P<0.05) and lower eNOS expression in H and HV. Median wall thickness was increased in H, and the expression of VEGFR-1, VEGFR-2, VEGF, and eNOS was altered, especially in neonates undergoing H and HV. These data suggested the occurrence of arteriolar wall changes mediated by NO and VEGF signaling in neonatal hypoxia.
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Affiliation(s)
- R L Figueira
- Laboratório de Cirurgia Fetal e Neonatal, Departamento de Cirurgia e Anatomia, Faculdade de Medicina de Ribeirão Preto, Universidade de São Paulo, Ribeirão Preto, SP, Brasil
| | - F L Gonçalves
- Laboratório de Cirurgia Fetal e Neonatal, Departamento de Cirurgia e Anatomia, Faculdade de Medicina de Ribeirão Preto, Universidade de São Paulo, Ribeirão Preto, SP, Brasil
| | - A R Prado
- Laboratório de Cirurgia Fetal e Neonatal, Departamento de Cirurgia e Anatomia, Faculdade de Medicina de Ribeirão Preto, Universidade de São Paulo, Ribeirão Preto, SP, Brasil
| | - M C Ribeiro
- Laboratório de Cirurgia Fetal e Neonatal, Departamento de Cirurgia e Anatomia, Faculdade de Medicina de Ribeirão Preto, Universidade de São Paulo, Ribeirão Preto, SP, Brasil
| | - K M Costa
- Laboratório de Cirurgia Fetal e Neonatal, Departamento de Cirurgia e Anatomia, Faculdade de Medicina de Ribeirão Preto, Universidade de São Paulo, Ribeirão Preto, SP, Brasil
| | - O Castro E Silva
- Laboratório de Transplante de Fígado, Departamento de Cirurgia e Anatomia, Faculdade de Medicina de Ribeirão Preto, Universidade de São Paulo, Ribeirão Preto, SP, Brasil
| | - L Sbragia
- Laboratório de Cirurgia Fetal e Neonatal, Departamento de Cirurgia e Anatomia, Faculdade de Medicina de Ribeirão Preto, Universidade de São Paulo, Ribeirão Preto, SP, Brasil
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Marques RDS, Prado AR, Antunes PFDC, André PSDB, Ribeiro MRN, Frizera-Neto A, Pontes MJ. Corrosion Resistant FBG-Based Quasi-Distributed Sensor for Crude Oil Tank Dynamic Temperature Profile Monitoring. Sensors (Basel) 2015; 15:30693-703. [PMID: 26690166 PMCID: PMC4721731 DOI: 10.3390/s151229811] [Citation(s) in RCA: 51] [Impact Index Per Article: 5.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 08/09/2015] [Accepted: 11/30/2015] [Indexed: 11/17/2022]
Abstract
This article presents a corrosion resistant, maneuverable, and intrinsically safe fiber Bragg grating (FBG)-based temperature optical sensor. Temperature monitoring is a critical activity for the oil and gas industry. It typically involves acquiring the desired parameters in a hazardous and corrosive environment. The use of polytetrafluoroethylene (PTFE) was proposed as a means of simultaneously isolating the optical fiber from the corrosive environment and avoiding undesirable mechanical tensions on the FBGs. The presented sensor head is based on multiple FBGs inscribed in a lengthy single mode fiber. The sensor presents an average thermal sensitivity of 8.82 ± 0.09 pm/°C, resulting in a typical temperature resolution of ~0.1 °C and an average time constant value of 6.25 ± 0.08 s. Corrosion and degradation resistance were verified by infrared spectroscopy and scanning electron microscopy during 90 days exposure to high salinity crude oil samples. The developed sensor was tested in a field pilot test, mimicking the operation of an inland crude tank, demonstrating its abilities to dynamically monitor temperature profile.
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Affiliation(s)
- Rogério da Silva Marques
- Federal Institute of Espírito Santo, Av. Filogônio Peixoto 2220, Bairro Aviso, Linhares 29901-291, Brazil.
- Federal University of Espírito Santo, Department of Electrical Engineering, Av. Fernando Ferrari, 514, Goiabeiras, Vitória 29075-910, Brazil.
| | - Adilson Ribeiro Prado
- Federal University of Espírito Santo, Department of Electrical Engineering, Av. Fernando Ferrari, 514, Goiabeiras, Vitória 29075-910, Brazil.
- Federal Institute of Espírito Santo, Rodovia ES 010, km 6.5-Manguinhos, Serra 29173-087, Brazil.
| | - Paulo Fernando da Costa Antunes
- Instituto de Telecomunicações, I3N and Physics Department, University of Aveiro, Campus Universitário de Santiago, Aveiro 3810-193, Portugal.
| | - Paulo Sérgio de Brito André
- Instituto de Telecomunicações and Department of Electrical and Computer Engineering, Superior Technical Institute , University of Lisbon, Av. Rovisco Pais, Lisbon 1049-001, Portugal.
| | - Moisés R N Ribeiro
- Federal University of Espírito Santo, Department of Electrical Engineering, Av. Fernando Ferrari, 514, Goiabeiras, Vitória 29075-910, Brazil.
| | - Anselmo Frizera-Neto
- Federal University of Espírito Santo, Department of Electrical Engineering, Av. Fernando Ferrari, 514, Goiabeiras, Vitória 29075-910, Brazil.
| | - Maria José Pontes
- Federal University of Espírito Santo, Department of Electrical Engineering, Av. Fernando Ferrari, 514, Goiabeiras, Vitória 29075-910, Brazil.
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Oliveira JP, Prado AR, Milaneze BA, Keijok WJ, Lenz D, Ribeiro J, Nunes Ribeiro MR, Pontes MJ, Nogueira BV, Cunegundes Guimaraes MC. Gold nanoparticles synthesis to application as nano biosensors. BMC Proc 2014. [PMCID: PMC4211043 DOI: 10.1186/1753-6561-8-s4-p249] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/24/2022] Open
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Rodrigues EC, Souza GA, Martins WA, Soibelman I, Meira AR, Faustino NC, Prado AR. [Survey of health conditions of students of the primary school from the Secretaria dos Negocios de Educação do Governo do Estado de São Paulo, Brazil]. Rev Saude Publica 1972; 6:343-59. [PMID: 4661000] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/11/2023] Open
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