1
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Teniou A, Rhouati A, Rabai S, Catanante G, Marty JL. Design of a label-free aptasensor for electrochemical determination of hemoglobin: investigation of the peroxidase-like activity of hemoglobin for the sensing of different substrates. Analyst 2023. [PMID: 37466196 DOI: 10.1039/d3an00345k] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 07/20/2023]
Abstract
The unbalanced hemoglobin level in biological fluids can cause several diseases; hence it can be used as a biomarker for diagnosis. We aim, in the present study, to construct a label-free electrochemical aptasensor for the quantification of hemoglobin. For that, a conjugate of L-cysteine and gold nanoparticles was used for the aptamer immobilization on screen printed carbon electrodes. Using square wave voltammetry, the calibration plot was obtained and it was linear in the range of 50 ng ml-1 to 36 000 ng ml-1 while the detection limit was 1.2 ng ml-1. After the binding of Hb on the modified screen-printed carbon electrode surface, the peroxidase-like activity of the bound hemoglobin was explored in the quantification of different substrates. Hydrogen peroxide and nitrite were chosen as model analytes. Amperometric measurements showed wide linear ranges: 0.2 μM-7.7 mM and 3.6 nM-1.3 mM for H2O2 and nitrite, respectively, with detection limits of 0.044 μM and 0.55 nM. In the proposed strategy, the aptamer provides excellent orientation and a biocompatible environment for hemoglobin whose catalytic activity plays a key role in H2O2 and nitrite analysis.
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Affiliation(s)
- Ahlem Teniou
- Bioengineering laboratory, Higher National School of Biotechnology, Constantine, Algeria.
| | - Amina Rhouati
- Bioengineering laboratory, Higher National School of Biotechnology, Constantine, Algeria.
| | - Selma Rabai
- Laboratory of Sensors, Instrumentations and Process (LCIP), University of Khenchela, Khenchela, Algeria
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2
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Carrapiço A, Martins MR, Caldeira AT, Mirão J, Dias L. Biosynthesis of Metal and Metal Oxide Nanoparticles Using Microbial Cultures: Mechanisms, Antimicrobial Activity and Applications to Cultural Heritage. Microorganisms 2023; 11:microorganisms11020378. [PMID: 36838343 PMCID: PMC9960935 DOI: 10.3390/microorganisms11020378] [Citation(s) in RCA: 10] [Impact Index Per Article: 10.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/29/2022] [Revised: 01/21/2023] [Accepted: 01/30/2023] [Indexed: 02/05/2023] Open
Abstract
Nanoparticles (1 to 100 nm) have unique physical and chemical properties, which makes them suitable for application in a vast range of scientific and technological fields. In particular, metal nanoparticle (MNPs) research has been showing promising antimicrobial activities, paving the way for new applications. However, despite some research into their antimicrobial potential, the antimicrobial mechanisms are still not well determined. Nanoparticles' biosynthesis, using plant extracts or microorganisms, has shown promising results as green alternatives to chemical synthesis; however, the knowledge regarding the mechanisms behind it is neither abundant nor consensual. In this review, findings from studies on the antimicrobial and biosynthesis mechanisms of MNPs were compiled and evidence-based mechanisms proposed. The first revealed the importance of enzymatic disturbance by internalized metal ions, while the second illustrated the role of reducing and negatively charged molecules. Additionally, the main results from recent studies (2018-2022) on the biosynthesis of MNPs using microorganisms were summarized and analyzed, evidencing a prevalence of research on silver nanoparticles synthesized using bacteria aiming toward testing their antimicrobial potential. Finally, a synopsis of studies on MNPs applied to cultural heritage materials showed potential for their future use in preservation.
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Affiliation(s)
- António Carrapiço
- HERCULES Laboratory, Cultural Heritage, Studies and Safeguard, University of Évora, 7000-809 Évora, Portugal
- Institute for Research and Advanced Training (IIFA), University of Évora, 7000-809 Évora, Portugal
| | - Maria Rosário Martins
- HERCULES Laboratory, Cultural Heritage, Studies and Safeguard, University of Évora, 7000-809 Évora, Portugal
- Department of Medicinal Sciences and Health, School of Health and Human Development, University of Évora, 7000-671 Évora, Portugal
| | - Ana Teresa Caldeira
- HERCULES Laboratory, Cultural Heritage, Studies and Safeguard, University of Évora, 7000-809 Évora, Portugal
- Department of Chemistry and Biochemistry, School of Sciences and Technology, University of Évora, 7000-671 Évora, Portugal
| | - José Mirão
- HERCULES Laboratory, Cultural Heritage, Studies and Safeguard, University of Évora, 7000-809 Évora, Portugal
- Department of Geosciences, School of Sciences and Technology, University of Évora, 7000-671 Évora, Portugal
| | - Luís Dias
- HERCULES Laboratory, Cultural Heritage, Studies and Safeguard, University of Évora, 7000-809 Évora, Portugal
- Department of Geosciences, School of Sciences and Technology, University of Évora, 7000-671 Évora, Portugal
- Correspondence:
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3
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Sharma NK, Vishwakarma J, Rai S, Alomar TS, AlMasoud N, Bhattarai A. Green Route Synthesis and Characterization Techniques of Silver Nanoparticles and Their Biological Adeptness. ACS OMEGA 2022; 7:27004-27020. [PMID: 35967040 PMCID: PMC9366950 DOI: 10.1021/acsomega.2c01400] [Citation(s) in RCA: 10] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/08/2022] [Accepted: 07/13/2022] [Indexed: 05/13/2023]
Abstract
The development of the most reliable and green techniques for nanoparticle synthesis is an emerging step in the area of green nanotechnology. Many conventional approaches used for nanoparticle (NP) synthesis are expensive, deadly, and nonenvironmental. In this new era of nanotechnology, to overcome such concerns, natural sources which work as capping and reducing agents, including bacteria, fungi, biopolymers, and plants, are suitable candidates for synthesizing AgNPs. The surface morphology and applications of AgNPs are significantly pretentious to the experimental conditions by which they are synthesized. Available scattered information on the synthesis of AgNPs comprises the influence of altered constraints and characterization methods such as FTIR, UV-vis, DLS, SEM, TEM, XRD, EDX, etc. and their properties and applications. This review focuses on all the above-mentioned natural sources that have been used for AgNP synthesis recently. The green routes to synthesize AgNPs have established effective applications in various areas, including biosensors, magnetic resonance imaging (MRI), cancer treatment, surface-enhanced Raman spectroscopy (SERS), antimicrobial agents, drug delivery, gene therapy, DNA analysis, etc. The existing boundaries and prospects for metal nanoparticle synthesis by the green route are also discussed herein.
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Affiliation(s)
- Nitin Kumar Sharma
- Department
of Chemical Engineering, Indian Institute
of Technology, Kanpur 208016, India
- Shri
Maneklal M. Patel Institute of Sciences and Research, Kadi Sarva Vishwavidyalaya, Gandhinagar 382023, India
| | - Jyotsna Vishwakarma
- K. B.
Pharmacy Institute of Education and Research, Kadi Sarva Vishwavidyalaya, Gandhinagar 382023, India
| | - Summi Rai
- Department
of Chemistry, Mahendra Morang Adarsh Multiple Campus, Tribhuvan University, Biratnagar 56613, Nepal
| | - Taghrid S. Alomar
- Department
of Chemistry, College of Science, Princess
Nourah bint Abdulrahman University, Riyadh 11671, Saudi Arabia
| | - Najla AlMasoud
- Department
of Chemistry, College of Science, Princess
Nourah bint Abdulrahman University, Riyadh 11671, Saudi Arabia
| | - Ajaya Bhattarai
- Department
of Chemistry, Mahendra Morang Adarsh Multiple Campus, Tribhuvan University, Biratnagar 56613, Nepal
- or
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4
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Rodríguez-Zamora P, Cordero-Silis CA, Fabila J, Luque-Ceballos JC, Buendía F, Heredia-Barbero A, Garzón IL. Interaction Mechanisms and Interface Configuration of Cysteine Adsorbed on Gold, Silver, and Copper Nanoparticles. LANGMUIR : THE ACS JOURNAL OF SURFACES AND COLLOIDS 2022; 38:5418-5427. [PMID: 35447033 DOI: 10.1021/acs.langmuir.1c03298] [Citation(s) in RCA: 7] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/14/2023]
Abstract
Cysteine-protected metal nanoparticles (NPs) have shown interesting physicochemical properties of potential utility in biomedical applications and in the understanding of protein folding. Herein, cysteine interaction with gold, silver, and copper NPs is characterized by Raman spectroscopy and density functional theory calculations to elucidate the molecular conformation and adsorption sites for each metal. The experimental analysis of Raman spectra upon adsorption with respect to free cysteine indicates that while the C-S bond and carboxyl group are similarly affected by adsorption on the three metal NPs, the amino group is sterically influenced by the electronegativity of each metal, causing a greater modification in the case of gold NPs. A theoretical approach that takes into consideration intermolecular interactions using two cysteine molecules is proposed using a S-metal-S interface motif anchored to the metal surface. These interactions generate the stabilization of an organo-metallic complex that combines gauche (PH) and anti (PC) rotameric conformers of cysteine on the surface of all three metals. Similarities between the calculated Raman spectra and experimental data confirm the thiol and carboxyl as adsorption groups for gold, silver, and copper NPs and suggest the formation of monomeric "staple motifs" that have been found in the protecting monolayer of atomic-precise thiolate-capped metal nanoclusters.
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Affiliation(s)
| | | | - Jorge Fabila
- Instituto de Física, Universidad Nacional Autónoma de México, Mexico City 04510, Mexico
| | | | - Fernando Buendía
- Instituto de Física, Universidad Nacional Autónoma de México, Mexico City 04510, Mexico
- Department of Chemical and Biomolecular Engineering Faculty of Engineering, National University of Singapore, 10 Kent Ridge Crescent, Singapore 119260, Singapore
| | | | - Ignacio L Garzón
- Instituto de Física, Universidad Nacional Autónoma de México, Mexico City 04510, Mexico
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5
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Balasurya S, Okla MK, Abdel-maksoud MA, Ahamad SR, Almasoud F, AbdElgawad H, Thomas AM, Raju LL, Sudheer Khan S. Fabrication of Ag-ZnCo2O4 framework on chitosan matrix for discriminative dual mode detection of S2- ions and cysteine, and cyto-toxicological evaluation. J Mol Liq 2022. [DOI: 10.1016/j.molliq.2021.118356] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022]
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6
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Ditta SA, Yaqub A, Tanvir F, Ullah R, Rashid M, Bilal M. Histopathological evaluation of amino acid capped silver nanoconjugates in albino mice. BIOINSPIRED BIOMIMETIC AND NANOBIOMATERIALS 2021. [DOI: 10.1680/jbibn.21.00033] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/13/2022]
Abstract
Various molecules may modify the surface chemistry of commonly used nanomaterials (NMs), resulting in the synthesis of novel and safer NMs. The current study was delineated to evaluate the in vivo toxicity profiling of the silver nanoconjugates (AgNCs) conjugated with different amino acids. The L-glycine capped-AgNCs exhibited toxicity and caused tissue damage, while L-cystine- and L-tyrosine-capped AgNCs showed protective effects against cadmium-induced toxicity. L-cystine-capped AgNCs performed well as compared to other amino-acid AgNCs. The level of serum creatinine, alanine aminotransferase (ALT), aspartate aminotransferase (AST), alkaline phosphatase and blood urea increased (p < 0.05) in G2, G3 and G5 in comparison to G1 (control group), while an increase in bilirubin for G2 was statistically non-significant (p > 0.05). The ALT and AST elevated (p < 0.05) in G4; however, other serological parameters in G4 and G6 did not show any noticeable change in their values. Histological analysis showed disturbed and deformed cellular structures in liver and kidney tissues of G2, G3 and G5. However, G4 and G6 samples demonstrated minute changes in comparison to G1. It is concluded that L-cystine- and L-tyrosine-capped AgNCs exhibited protective effects and should be tested further for developing safer nanoconjugates for biomedical uses.
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Affiliation(s)
| | - Atif Yaqub
- Department of Zoology, Government College University, Lahore, Pakistan
| | - Fouzia Tanvir
- Department of Zoology, University of Okara, Okara, Pakistan
| | - Rehan Ullah
- Department of Zoology, Government College University, Lahore, Pakistan
| | - Muhammad Rashid
- Department of Zoology, Government College University, Lahore, Pakistan
| | - Muhammad Bilal
- Department of Zoology, Government College University, Lahore, Pakistan
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7
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Xu L, Zhu Z, Sun DW. Bioinspired Nanomodification Strategies: Moving from Chemical-Based Agrosystems to Sustainable Agriculture. ACS NANO 2021; 15:12655-12686. [PMID: 34346204 PMCID: PMC8397433 DOI: 10.1021/acsnano.1c03948] [Citation(s) in RCA: 40] [Impact Index Per Article: 13.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/10/2021] [Accepted: 07/29/2021] [Indexed: 05/24/2023]
Abstract
Agrochemicals have supported the development of the agricultural economy and national population over the past century. However, excessive applications of agrochemicals pose threats to the environment and human health. In the last decades, nanoparticles (NPs) have been a hot topic in many fields, especially in agriculture, because of their physicochemical properties. Nevertheless, the prevalent methods for fabricating NPs are uneconomical and involve toxic reagents, hindering their extensive applications in the agricultural sector. In contrast, inspired by biological exemplifications from microbes and plants, their extract and biomass can act as a reducing and capping agent to form NPs without any toxic reagents. NPs synthesized through these bioinspired routes are cost-effective, ecofriendly, and high performing. With the development of nanotechnology, biosynthetic NPs (bioNPs) have been proven to be a substitute strategy for agrochemicals and traditional NPs in heavy-metal remediation of soil, promotion of plant growth, and management of plant disease with less toxicity and higher performance. Therefore, bioinspired synthesis of NPs will be an inevitable trend for sustainable development in agricultural fields. This critical review will demonstrate the bioinspired synthesis of NPs and discuss the influence of bioNPs on agricultural soil, crop growth, and crop diseases compared to chemical NPs or agrochemicals.
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Affiliation(s)
- Liang Xu
- School
of Food Science and Engineering, South China
University of Technology, Guangzhou 510641, China
- Academy
of Contemporary Food Engineering, South
China University of Technology, Guangzhou Higher Education Mega Center, Guangzhou 510006, China
- Engineering
and Technological Research Centre of Guangdong Province on Intelligent
Sensing and Process Control of Cold Chain Foods, & Guangdong Province
Engineering Laboratory for Intelligent Cold Chain Logistics Equipment
for Agricultural Products, Guangzhou Higher
Education Mega Center, Guangzhou 510006, China
| | - Zhiwei Zhu
- School
of Food Science and Engineering, South China
University of Technology, Guangzhou 510641, China
- Academy
of Contemporary Food Engineering, South
China University of Technology, Guangzhou Higher Education Mega Center, Guangzhou 510006, China
- Engineering
and Technological Research Centre of Guangdong Province on Intelligent
Sensing and Process Control of Cold Chain Foods, & Guangdong Province
Engineering Laboratory for Intelligent Cold Chain Logistics Equipment
for Agricultural Products, Guangzhou Higher
Education Mega Center, Guangzhou 510006, China
| | - Da-Wen Sun
- School
of Food Science and Engineering, South China
University of Technology, Guangzhou 510641, China
- Academy
of Contemporary Food Engineering, South
China University of Technology, Guangzhou Higher Education Mega Center, Guangzhou 510006, China
- Engineering
and Technological Research Centre of Guangdong Province on Intelligent
Sensing and Process Control of Cold Chain Foods, & Guangdong Province
Engineering Laboratory for Intelligent Cold Chain Logistics Equipment
for Agricultural Products, Guangzhou Higher
Education Mega Center, Guangzhou 510006, China
- Food
Refrigeration and Computerized Food Technology (FRCFT), Agriculture
and Food Science Centre, University College
Dublin, National University of Ireland, Belfield, Dublin 4, Ireland
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8
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Pem B, Toma M, Vrček V, Vinković Vrček I. Combined NMR and Computational Study of Cysteine Oxidation during Nucleation of Metallic Clusters in Biological Systems. Inorg Chem 2021; 60:4144-4161. [PMID: 33657797 DOI: 10.1021/acs.inorgchem.1c00321] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/12/2022]
Abstract
The widespread biomedical applications of silver and gold nanoparticles (AgNPs and AuNPs, respectively) prompt the need for mechanistic evaluation of their interaction with biomolecules. In biological media, metallic NPs are known to transform by various pathways, especially in the presence of thiols. The interplay between metallic NPs and thiols may lead to unpredictable consequences for the health status of an organism. This study explored the potential events occurring during biotransformation, dissolution, and reformation of NPs in the thiol-rich biological media. The study employed a model system evaluating the interaction of cysteine with small-sized AgNPs and AuNPs. The interplay of cysteine on transformation and reformation pathways of these NPs was experimentally investigated by nuclear magnetic resonance (NMR) spectroscopy and supported by light scattering techniques and transmission electron microscopy (TEM). As the main outcome, Ag- or Au-catalyzed oxidation of cysteine to cystine was found to occur through generation of reactive oxygen species (ROS). Computational simulations confirmed this mechanism and the role of ROS in the oxidative dimerization of biothiol during NPs reformation. The obtained results represent valuable mechanistic data about the complex events during the transport of metallic NPs in thiol-rich biological systems that should be considered for the future biomedical applications of metal-based nanomaterials.
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Affiliation(s)
- Barbara Pem
- Institute for Medical Research and Occupational Health, Ksaverska cesta 2, 10000 Zagreb, Croatia
| | - Mateja Toma
- Faculty of Pharmacy and Biochemistry, University of Zagreb, Ante Kovačića 1, 10000 Zagreb, Croatia
| | - Valerije Vrček
- Faculty of Pharmacy and Biochemistry, University of Zagreb, Ante Kovačića 1, 10000 Zagreb, Croatia
| | - Ivana Vinković Vrček
- Institute for Medical Research and Occupational Health, Ksaverska cesta 2, 10000 Zagreb, Croatia
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9
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Ibrahim UH, Devnarain N, Govender T. Biomimetic strategies for enhancing synthesis and delivery of antibacterial nanosystems. Int J Pharm 2021; 596:120276. [DOI: 10.1016/j.ijpharm.2021.120276] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/26/2020] [Revised: 12/09/2020] [Accepted: 12/19/2020] [Indexed: 12/19/2022]
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10
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Wang Z, Li F, Zhang L, Qian J, Cao S. Phase-transfer-assisted synthesis of cysteine-Ag nanoparticles/graphene oxide nanocomposite and its enhanced performance in antibiosis and biosensing. NANOTECHNOLOGY 2020; 31:455603. [PMID: 32590361 DOI: 10.1088/1361-6528/aba05c] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/11/2023]
Abstract
We report a facile, rapid, phase-transfer-assisted process to prepare Ag nanoparticles (AgNP) loaded graphene oxide (GO) nanocomposite, by using cysteine as a highly-effective phase transfer agent for AgNP movement from organic phase to water and subsequently as a covalent linkage for immobilizing AgNP on GO. The obtained c-Ag/GO nanocomposite possesses high nanoparticle loading efficiency, small particle size and monodispersity, strong binding force and good water dispersibility, which endow it with great potential in a variety of bio-applications. To illustrate potentail application, c-Ag/GO and its derivatives c-Ag/rGO were used for antibiosis and biosensing, respectively. The c-Ag/GO composite demonstrates high antibacterial activity against E. coli with a minimal bactericidal concentration of 10 μg ml-1. The biosensor based on c-Ag/rGO exhibits rapid and sensitive response for uric acid detection with a detection limit of 0.025 μM, a sensitivity of 5.76 μA mM-1 and a wide linear range of 0.025 ∼ 2250 μM. The comparative analysis with relevant nanocomposites also reveals the precedence of c-Ag/GO in these applications, thus highlighting the advantages of the developed preparation method for c-Ag/GO.
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Affiliation(s)
- ZhiZhan Wang
- School of Materials Science and Engineering, Zhengzhou University, Zhengzhou, People's Republic of China
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11
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Naaz F, Farooq U, Khan MAM, Ahmad T. Multifunctional Efficacy of Environmentally Benign Silver Nanospheres for Organic Transformation, Photocatalysis, and Water Remediation. ACS OMEGA 2020; 5:26063-26076. [PMID: 33073133 PMCID: PMC7558020 DOI: 10.1021/acsomega.0c03584] [Citation(s) in RCA: 9] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 07/27/2020] [Accepted: 09/15/2020] [Indexed: 06/11/2023]
Abstract
Highly crystalline and monophasic silver nanospheres with a high specific surface area of 57 m2/g have been synthesized by an environmentally benign rapid chemical reduction using l-alanine for catalytic transformation, photocatalytic degradation, and bacterial disinfection, which can provide an ample strategy for water remediation. Electron microscopic analysis confirms the spherical morphology of as-prepared silver nanoparticles with an average grain size of 20 nm. Silver nanospheres showed excellent catalytic activity for the catalytic hydrogenation and conversion (95.6%) of 4-nitrophenol to 4-aminophenol. Significant photocatalytic degradation proficiency was also shown for methylene blue (94.5%) and rhodamine B (96.3%) dyes under solar irradiation. The antibacterial behavior of Ala-Ag nanospheres was demonstrated through the disk diffusion antibacterial assay against Gram-positive (Escherichia coli) and Gram-negative (Staphylococcus aureus) bacteria. Multifunctional efficiency of as-prepared Ala-Ag nanospheres for water remediation has also been established.
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Affiliation(s)
- Farha Naaz
- Nanochemistry
Laboratory, Department of Chemistry, Jamia
Millia Islamia, New Delhi 110025, India
| | - Umar Farooq
- Nanochemistry
Laboratory, Department of Chemistry, Jamia
Millia Islamia, New Delhi 110025, India
| | - M. A. Majeed Khan
- King
Abdullah Institute for Nanotechnology, King
Saud University, Riyadh 11451, Saudi Arabia
| | - Tokeer Ahmad
- Nanochemistry
Laboratory, Department of Chemistry, Jamia
Millia Islamia, New Delhi 110025, India
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12
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Basik M, Mobin M, Shoeb M. Cysteine-silver-gold Nanocomposite as potential stable green corrosion inhibitor for mild steel under acidic condition. Sci Rep 2020; 10:279. [PMID: 31937900 PMCID: PMC6959314 DOI: 10.1038/s41598-019-57181-5] [Citation(s) in RCA: 21] [Impact Index Per Article: 5.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/26/2019] [Accepted: 12/23/2019] [Indexed: 11/16/2022] Open
Abstract
Cysteine based silver-gold nanocomposite (Cys/Ag-Au NCz) was synthesized, this was followed by its characterization using Fourier-transform infrared spectroscopy (FTIR), X-ray diffraction (XRD), Ultraviolet-visible spectroscopy (UV-Vis), Scanning electron microscopy (SEM), Energy-dispersive X-ray spectroscopy (EDAX), Thermogravimetric analysis (TGA) and Transmission electron microscopy (TEM). Cys/Ag-Au NCz was studied as novel green corrosion inhibitor for mild steel in 1M HCl solution at varying concentration and temperature using gravimetric, Potentiodynamic polarization (PDP), Electrochemical impedance spectroscopy (EIS), SEM, EDAX and FTIR. Weight loss, PDP and EIS studies confirmed Cys/Ag-Au NCz as efficient corrosion inhibitor at moderately low concentration. The maximum inhibition efficiency of 96 % was observed at 303 K at 300 ppm. Cys/Ag-Au NCz acted by affecting both anodic and cathodic processes and its adsorption on steel surface followed the Langmuir adsorption isotherm. EIS data displayed the existence of protective film at mild steel/solution interface in Cys/Ag-Au NCz inhibited system. SEM micrograph in presence of Cys/Ag-Au NCz inhibited acid solution displayed better morphology as compared to blank solution. The UV-Vis and FTIR data indicates good interaction between the Cys/Ag-Au NCz and steel surface.
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Affiliation(s)
- Megha Basik
- Corrosion Research Laboratory, Department of Applied Chemistry, Faculty of Engineering and Technology, Aligarh Muslim University, Aligarh, 202002, India
| | - Mohammad Mobin
- Corrosion Research Laboratory, Department of Applied Chemistry, Faculty of Engineering and Technology, Aligarh Muslim University, Aligarh, 202002, India.
| | - Mohd Shoeb
- Corrosion Research Laboratory, Department of Applied Chemistry, Faculty of Engineering and Technology, Aligarh Muslim University, Aligarh, 202002, India
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13
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Gour N, Kanth P. C, Koshti B, Kshtriya V, Shah D, Patel S, Agrawal-Rajput R, Pandey MK. Amyloid-like Structures Formed by Single Amino Acid Self-Assemblies of Cysteine and Methionine. ACS Chem Neurosci 2019; 10:1230-1239. [PMID: 30380833 DOI: 10.1021/acschemneuro.8b00310] [Citation(s) in RCA: 34] [Impact Index Per Article: 6.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/12/2022] Open
Abstract
We report for the very first time the discovery of amyloid-like self-assemblies formed by the nonaromatic single amino acids cysteine (Cys) and methionine (Met) under neutral aqueous conditions. The structure formation was assessed and characterized by various microscopic and spectroscopic techniques such as optical microscopy, phase contrast microscopy, scanning electron microscopy, and transmission electron microscopy. The mechanism of self-assembly and the role of hydrogen bonding and thiol interactions of Cys and Met were assessed by Fourier transform infrared spectroscopy, thermogravimetric analysis, X-ray diffraction, and solid state NMR along with various control experiments. In addition, molecular dynamics simulations were carried out to gain insight into assembly initiation. Further, Thioflavin T and Congo red binding assays with Cys and Met structures indicated that these single amino acid assemblies may have amyloid-like characteristics. To understand the biological significance of the Cys and Met structures, cytotoxicity assays of the assemblies were performed on human neuroblastoma IMR-32 cells and monkey kidney cells (COS-7). The results revealed that both Cys and Met fibers were cytotoxic. The cell viability assay further supported the hypothesis that aggregation of single amino acid may contribute to the etiology of metabolic disorders like cystinuria and hypermethioninemia. The results presented in this study are striking, and to the best of our knowledge this is the first report which demonstrates that nonaromatic amino acids like Cys and Met can undergo spontaneous self-assembly to form amyloidogenic aggregates. The results presented are also consistent with the established generic amyloid hypothesis and support a new paradigm for the study of the etiology of single amino acid initiated metabolic disorders in amyloid related diseases.
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Affiliation(s)
- Nidhi Gour
- Centre of Engineering and Enterprise, Indian Institute of Advanced Research, Gandhinagar, Gujarat 382426, India
| | - Chandra Kanth P.
- Department of Science, School of Technology, Pandit Deendayal Petroleum University, Gandhinagar, Gujarat 382007, India
| | - Bharti Koshti
- Centre of Engineering and Enterprise, Indian Institute of Advanced Research, Gandhinagar, Gujarat 382426, India
| | - Vivekshinh Kshtriya
- Centre of Engineering and Enterprise, Indian Institute of Advanced Research, Gandhinagar, Gujarat 382426, India
| | - Dhruvi Shah
- School of Biological Sciences and Biotechnology, Indian Institute of Advanced Research, Gandhinagar, Gujarat 382426, India
| | - Sunita Patel
- UM-DAE Centre for Excellence in Basic Sciences, Mumbai University Campus, Mumbai, Maharashtra 400098, India
| | - Reena Agrawal-Rajput
- School of Biological Sciences and Biotechnology, Indian Institute of Advanced Research, Gandhinagar, Gujarat 382426, India
| | - Manoj K. Pandey
- Department of Science, School of Technology, Pandit Deendayal Petroleum University, Gandhinagar, Gujarat 382007, India
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14
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Electrokinetic properties of cysteine-stabilized silver nanoparticles dispersed in suspensions and deposited on solid surfaces in the form of monolayers. Electrochim Acta 2019. [DOI: 10.1016/j.electacta.2018.11.213] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/23/2022]
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15
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Wang L, Wang Y, Hu Y, Wang G, Dong S, Hao J. Magnetic networks of carbon quantum dots and Ag particles. J Colloid Interface Sci 2018; 539:203-213. [PMID: 30580176 DOI: 10.1016/j.jcis.2018.12.037] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/23/2018] [Revised: 12/09/2018] [Accepted: 12/10/2018] [Indexed: 01/08/2023]
Abstract
Self-assembly exploits a facile non-covalent way to couple structurally different building blocks for creating soft materials with synergetic novel properties and functions. Taking advantage of magneto-properties from magnetic surfactants as well as versatile functional ligand formed by carbon quantum dots with cysteine (cys-CQDs), the magnetic network materials were firstly constructed by using magnetic surfactants and cys-CQDs as self-assembly building blocks. Counterions of Br-, [GdCl3Br]-, [HoCl3Br]- in surfactants could control the morphology of magnetic network structures, and the concentration of magnetic surfactants manoeuvres a versatile scenario of self-assembly behavior. Self-assembly of cys-CQDs and CTAHo brought out a 10-fold increase in magnetic moment of CTAHo. The fluorescent property of carbon quantum dots firstly served as an effective indicator element to dissect the collective effect in self-assembly process. For the sake of capturing the target sequence-specific DNA molecules, in situ growth of Ag nanoparticles (AgNPs) upon the magnetic network structures was realized by synergetically electrostatic and coordinated interaction of carboxyl groups and Ag ions. The magnetic Ag self-assemblies anchored thiol-containing DNA, serving as a magnetic separation booster for the target sequence-specific DNA molecules under an applied magnetic field, which will bring light on designing magneto-functional self-assembly materials according to practical application requirements.
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Affiliation(s)
- Ling Wang
- Key Laboratory of Colloid and Interface Chemistry & Key Laboratory of Special Aggregated Materials (Shandong University), Ministry of Education, Jinan 250100, PR China
| | - Yitong Wang
- Key Laboratory of Colloid and Interface Chemistry & Key Laboratory of Special Aggregated Materials (Shandong University), Ministry of Education, Jinan 250100, PR China
| | - Yuanyuan Hu
- Key Laboratory of Colloid and Interface Chemistry & Key Laboratory of Special Aggregated Materials (Shandong University), Ministry of Education, Jinan 250100, PR China
| | - Guangzhen Wang
- Key Laboratory of Colloid and Interface Chemistry & Key Laboratory of Special Aggregated Materials (Shandong University), Ministry of Education, Jinan 250100, PR China
| | - Shuli Dong
- Key Laboratory of Colloid and Interface Chemistry & Key Laboratory of Special Aggregated Materials (Shandong University), Ministry of Education, Jinan 250100, PR China.
| | - Jingcheng Hao
- Key Laboratory of Colloid and Interface Chemistry & Key Laboratory of Special Aggregated Materials (Shandong University), Ministry of Education, Jinan 250100, PR China.
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16
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Self-assembly of cysteine-functionalized silver nanoparticles at solid/liquid interfaces. Colloids Surf A Physicochem Eng Asp 2018. [DOI: 10.1016/j.colsurfa.2018.08.050] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/13/2023]
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17
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Kim NH, Hwang W, Baek K, Rohman MR, Kim J, Kim HW, Mun J, Lee SY, Yun G, Murray J, Ha JW, Rho J, Moskovits M, Kim K. Smart SERS Hot Spots: Single Molecules Can Be Positioned in a Plasmonic Nanojunction Using Host–Guest Chemistry. J Am Chem Soc 2018; 140:4705-4711. [DOI: 10.1021/jacs.8b01501] [Citation(s) in RCA: 72] [Impact Index Per Article: 12.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/31/2022]
Affiliation(s)
- Nam Hoon Kim
- Center for Self-assembly and Complexity, Institute for Basic Science, Pohang 37673, Republic of Korea
| | - Wooseup Hwang
- Center for Self-assembly and Complexity, Institute for Basic Science, Pohang 37673, Republic of Korea
| | - Kangkyun Baek
- Center for Self-assembly and Complexity, Institute for Basic Science, Pohang 37673, Republic of Korea
| | - Md. Rumum Rohman
- Center for Self-assembly and Complexity, Institute for Basic Science, Pohang 37673, Republic of Korea
| | - Jeehong Kim
- Center for Self-assembly and Complexity, Institute for Basic Science, Pohang 37673, Republic of Korea
| | - Hyun Woo Kim
- Center for Self-assembly and Complexity, Institute for Basic Science, Pohang 37673, Republic of Korea
| | | | - So Young Lee
- Department of Chemistry, University of Ulsan, Ulsan 44610, Republic of Korea
| | - Gyeongwon Yun
- Center for Self-assembly and Complexity, Institute for Basic Science, Pohang 37673, Republic of Korea
| | - James Murray
- Center for Self-assembly and Complexity, Institute for Basic Science, Pohang 37673, Republic of Korea
| | - Ji Won Ha
- Department of Chemistry, University of Ulsan, Ulsan 44610, Republic of Korea
| | | | - Martin Moskovits
- Department of Chemistry and Biochemistry, University of California, Santa Barbara, California 93106, United States
| | - Kimoon Kim
- Center for Self-assembly and Complexity, Institute for Basic Science, Pohang 37673, Republic of Korea
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18
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Jakob M, von Weber A, Kartouzian A, Heiz U. Chirality transfer from organic ligands to silver nanostructures via chiral polarisation of the electric field. Phys Chem Chem Phys 2018; 20:20347-20351. [DOI: 10.1039/c8cp02970a] [Citation(s) in RCA: 13] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/03/2023]
Abstract
Polarisation of the electric field and a chiral adsorption pattern can induce chirality into silver NPs very efficiently.
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Affiliation(s)
- Matthias Jakob
- Chair of Physical Chemistry
- Technical University of Munich
- 85748 Garching
- Germany
| | - Alexander von Weber
- Chair of Physical Chemistry
- Technical University of Munich
- 85748 Garching
- Germany
| | - Aras Kartouzian
- Chair of Physical Chemistry
- Technical University of Munich
- 85748 Garching
- Germany
| | - Ulrich Heiz
- Chair of Physical Chemistry
- Technical University of Munich
- 85748 Garching
- Germany
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19
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Physicochemical properties and cytotoxicity of cysteine-functionalized silver nanoparticles. Colloids Surf B Biointerfaces 2017; 160:429-437. [DOI: 10.1016/j.colsurfb.2017.09.042] [Citation(s) in RCA: 20] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/26/2017] [Revised: 08/06/2017] [Accepted: 09/17/2017] [Indexed: 01/20/2023]
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20
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Chandraker K, Nagwanshi R, Jadhav SK, Ghosh KK, Satnami ML. Antibacterial properties of amino acid functionalized silver nanoparticles decorated on graphene oxide sheets. SPECTROCHIMICA ACTA. PART A, MOLECULAR AND BIOMOLECULAR SPECTROSCOPY 2017; 181:47-54. [PMID: 28329722 DOI: 10.1016/j.saa.2017.03.032] [Citation(s) in RCA: 24] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/21/2016] [Revised: 03/11/2017] [Accepted: 03/15/2017] [Indexed: 06/06/2023]
Abstract
Graphene oxide (GO) sheets decorated with amino acid L-cysteine (L-cys) functionalized silver nanoparticles (GO-L-cys-Ag) was synthesized by AgNO3, trisodium citrate, and NaBH4. GO-L-cys-Ag nanocomposite was characterized by transmission electron microscopy (TEM), Fourier transform infrared (FTIR) spectra, ultraviolet-visible (UV-vis) absorption spectra, which demonstrated that a diameter of L-cys-AgNPs compactly deposited on GO. Antibacterial activity tests of GO-L-cys-Ag nanocomposite were carried out using Escherichia coli MTCC 1687 and Staphylococcus aureus MTCC 3160 as model strains of Gram-negative and Gram-positive bacteria, respectively. The effect of bactericide dosage on antibacterial activity of GO-L-cys-Ag nanocomposite was examined by plate count, well diffusion and broth dilution methods. Morphological observation of bacterial cells by scanning electron microscope (SEM) showed that GO-L-cys-Ag nanocomposite was more destructive to cell membrane of Escherichia coli than that of Staphylococcus aureus. The above technique establish that the bactericidal property of GO-L-cys-Ag nanocomposite with wide range of applications in biomedical science.
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Affiliation(s)
- Kumudini Chandraker
- School of Studies in Chemistry, Pt. Ravishankar Shukla University, Raipur 492010, (C.G.), India
| | - Rekha Nagwanshi
- Department of Chemistry, Govt. Madhav Science P. G. College, Ujjain 456010, (M.P.), India
| | - S K Jadhav
- School of Studies in Biotechnology, Pt. Ravishankar Shukla University, Raipur 492010, (C.G.), India
| | - Kallol K Ghosh
- School of Studies in Chemistry, Pt. Ravishankar Shukla University, Raipur 492010, (C.G.), India
| | - Manmohan L Satnami
- School of Studies in Chemistry, Pt. Ravishankar Shukla University, Raipur 492010, (C.G.), India.
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21
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Talekar S, Joshi A, Chougle R, Nakhe A, Bhojwani R. Immobilized enzyme mediated synthesis of silver nanoparticles using cross-linked enzyme aggregates (CLEAs) of NADH-dependent nitrate reductase. ACTA ACUST UNITED AC 2016. [DOI: 10.1016/j.nanoso.2016.03.002] [Citation(s) in RCA: 20] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/22/2022]
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22
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Durán M, Silveira CP, Durán N. Catalytic role of traditional enzymes for biosynthesis of biogenic metallic nanoparticles: a mini-review. IET Nanobiotechnol 2016; 9:314-23. [PMID: 26435286 DOI: 10.1049/iet-nbt.2014.0054] [Citation(s) in RCA: 43] [Impact Index Per Article: 5.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/15/2022] Open
Abstract
Although the formation mechanism of biogenically metallic nanoparticles is broadly associated to enzyme mediation, major attention has been given to the role of proteins and peptides in oxido-reduction of metallic ions leading to these nanostructures. Among the wide range of biomolecules that can act not only as capping agents but also as non-enzymatic agents to form nanoparticles, disulphide bridge-containing peptides and amino acids particularly stand out. The literature proposes that they actively participate in the process of nanoparticles' synthesis, with thiols groups and disulphide bridge moieties as the reaction catalytic sites. Similarly, denaturated enzymes containing exposed S-S or S-H moieties are also able to reduce metallic ions to form nanoparticles. This mini-review is focused on the biogenic synthesis of metallic nanoparticles such as gold, silver, copper, platinum, palladium, lead and selenium, in which proteins, peptides, reductases and even oxido-reductases act as non-enzymatic catalysts of the reduction reaction, opening economically and ecologically favourable perspectives in the nanoparticles synthesis field.
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Affiliation(s)
- Marcela Durán
- Laboratory on Nanostructures Synthesis and Interactions with Biosystems (NanoBioss) Institute of Chemistry, Universidade Estadual de Campinas, Bloco I, Sala 239, Caixa Postal 6154, CEP 13081-970 Campinas, SP, Brazil
| | - Camila P Silveira
- Laboratory on Nanostructures Synthesis and Interactions with Biosystems (NanoBioss) Institute of Chemistry, Universidade Estadual de Campinas, Bloco I, Sala 239, Caixa Postal 6154, CEP 13081-970 Campinas, SP, Brazil
| | - Nelson Durán
- Laboratory on Nanostructures Synthesis and Interactions with Biosystems (NanoBioss) Institute of Chemistry, Universidade Estadual de Campinas, Bloco I, Sala 239, Caixa Postal 6154, CEP 13081-970 Campinas, SP, Brazil.
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23
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Shaik MM, Kowshik M. Novel melt-down neutralization method for synthesis of chitosan–silver scaffolds for tissue engineering applications. Polym Bull (Berl) 2015. [DOI: 10.1007/s00289-015-1522-1] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/06/2023]
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24
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Shankar S, Rhim JW. Amino acid mediated synthesis of silver nanoparticles and preparation of antimicrobial agar/silver nanoparticles composite films. Carbohydr Polym 2015; 130:353-63. [PMID: 26076636 DOI: 10.1016/j.carbpol.2015.05.018] [Citation(s) in RCA: 155] [Impact Index Per Article: 17.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/28/2015] [Revised: 04/30/2015] [Accepted: 05/04/2015] [Indexed: 10/23/2022]
Abstract
Silver nanoparticles (AgNPs) were synthesized using amino acids (tyrosine and tryptophan) as reducing and capping agents, and they were incorporated into the agar to prepare antimicrobial composite films. The AgNPs solutions exhibited characteristic absorption peak at 420 nm that showed a red shift to ∼434 nm after forming composite with agar. XRD data demonstrated the crystalline structure of AgNPs with dominant (111) facet. Apparent surface color and transmittance of agar films were greatly influenced by the AgNPs. The incorporation of AgNPs into agar did not exhibit any change in chemical structure, thermal stability, moisture content, and water vapor permeability. The water contact angle, tensile strength, and modulus decreased slightly, but elongation at break increased after AgNPs incorporation. The agar/AgNPs nanocomposite films possessed strong antibacterial activity against Listeria monocytogenes and Escherichia coli. The agar/AgNPs film could be applied to the active food packaging by controlling the food-borne pathogens.
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Affiliation(s)
- Shiv Shankar
- Department of Food Engineering and Bionanocomposite Research Institute, Mokpo National University, 61 Dorimri, Chungkyemyon, Muangun, 534729 Jeonnam, Republic of Korea
| | - Jong-Whan Rhim
- Department of Food Engineering and Bionanocomposite Research Institute, Mokpo National University, 61 Dorimri, Chungkyemyon, Muangun, 534729 Jeonnam, Republic of Korea.
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25
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Nidya M, Umadevi M, Rajkumar BJM. Structural, morphological and optical studies of l-cysteine modified silver nanoparticles and its application as a probe for the selective colorimetric detection of Hg(2+). SPECTROCHIMICA ACTA. PART A, MOLECULAR AND BIOMOLECULAR SPECTROSCOPY 2014; 133:265-271. [PMID: 24950383 DOI: 10.1016/j.saa.2014.04.193] [Citation(s) in RCA: 34] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/22/2013] [Revised: 04/27/2014] [Accepted: 04/30/2014] [Indexed: 06/03/2023]
Abstract
We report an extensive study on the evolution of a highly facile, selective colorimetric probe for Hg(2+) detection using cysteine modified silver nanoparticles. The nanoparticles are stable in a basic medium and the Surface Enhanced Raman Spectrum (SERS) reveal that the cysteine is bound to the Ag surface through the thiolate moiety with the charged carboxylate group pointing outwards in a morphology that lends itself to sensor applications. In the presence of Hg(2+), the absorption peak is quenched resulting in a drastic colour change. The sensor displays high selectivity to Hg(2+) over other metallic ions.
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Affiliation(s)
- M Nidya
- P.G. & Research Department of Physics, Lady Doak College, Madurai 625002, Tamil Nadu, India
| | - M Umadevi
- Department of Physics, Mother Teresa Women's University, Kodaikanal 624102, Tamil Nadu, India
| | - Beulah J M Rajkumar
- P.G. & Research Department of Physics, Lady Doak College, Madurai 625002, Tamil Nadu, India.
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26
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Biosynthesis of silver nanoparticles from Schizophyllum radiatum HE 863742.1: their characterization and antimicrobial activity. 3 Biotech 2014; 4:227-234. [PMID: 28324427 PMCID: PMC4026449 DOI: 10.1007/s13205-013-0138-0] [Citation(s) in RCA: 32] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/27/2012] [Accepted: 05/07/2013] [Indexed: 11/20/2022] Open
Abstract
Development of reliable and eco-friendly process for synthesis of silver nanoparticles is an important step in the field of application in nanotechnology. One of the options to achieve this objective is to use natural biological processes. They have an advantage over conventional methods involving chemical agents associated with environmental toxicity. This study demonstrates the extra-cellular synthesis of stable silver nanoparticles using the white rot fungus, Schizophyllum radiatum with GenBank Accession no HE 863742.1. The supernatant of the seed media obtained after separating the cells has been used for the synthesis of silver nanoparticles. The morphology and structure of synthesized silver nanoparticles were characterized using FT-IR, XRD, UV–visible spectrum of the aqueous medium containing silver ion showed a peak in the range of 420–430 nm corresponding to the Plasmon absorbance of silver nanoparticles. Scanning electron microscopy micrograph showed formation of well-dispersed silver nanoparticles in the range of 10–40 nm. The effect of different carbon sources and the time taken for formation particles and the anti-microbial activity of synthesized nanoparticles were carried and compared with silver nitrate solution and with standard streptomycin. The process of reduction being extra-cellular and fast may lead to the development of an easy bioprocess for synthesis of silver nanoparticles.
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27
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Atta AM, Al-Lohedan HA, Ezzat AO. Synthesis of silver nanoparticles by green method stabilized to synthetic human stomach fluid. Molecules 2014; 19:6737-53. [PMID: 24858265 PMCID: PMC6271957 DOI: 10.3390/molecules19056737] [Citation(s) in RCA: 20] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/22/2014] [Revised: 05/20/2014] [Accepted: 05/21/2014] [Indexed: 02/03/2023] Open
Abstract
Silver nanoparticles (Ag NP) have been attracted much attention in recent years in biomedical applications due to their antimicrobial activity, but their drawbacks include toxicity and instability to aqueous hydrochloric acid solutions. Ag NPs have now been successfully prepared by a simple and “green” synthesis method by reducing Ag+ ions in the presence of modified poly(vinyl alcohol) thiol (PVA-SH) in aqueous acidic solution. In this respect, Ag NPs were stabilized by coating different types of citrate-reduced Ag NPs with different weight ratios (1–3 Wt. %) of PVSH derivatives. The as-prepared Ag NPs were characterized using UV-Visible, high resolution transmission electron microscopy/ energy dispersive X-ray spectroscopy (TEM/EDS), dynamic light scattering (DLS) and X-ray powder diffraction (XRD) combined with Rietveld analysis. The changes in size, shape, and hydrodynamic diameter of Ag NPs after different duration exposure to synthetic stomach fluid (SSF) and1 M HCl were determined using TEM, XRD and UV-Visible analyses. The data indicated that these Ag NPs possessed high stability to SSF for more than 90 days, which was not previously reported in the literature.
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Affiliation(s)
- Ayman M. Atta
- Surfactants Research Chair, Department of Chemistry, College of Science, King Saud University, P.O.Box 2455, Riyadh 11451, Saudi Arabia; E-Mails: (H.A.A.-L.); (A.O.E.)
- Petroleum Application Department, Egyptian Petroleum Research Institute, Cairo 11727, Egypt
- Author to whom correspondence should be addressed; E-Mail: ; Tel.: +96-611-467-5998; Fax: +96-611-467-5992
| | - Hamad A. Al-Lohedan
- Surfactants Research Chair, Department of Chemistry, College of Science, King Saud University, P.O.Box 2455, Riyadh 11451, Saudi Arabia; E-Mails: (H.A.A.-L.); (A.O.E.)
| | - Abdelrahman O. Ezzat
- Surfactants Research Chair, Department of Chemistry, College of Science, King Saud University, P.O.Box 2455, Riyadh 11451, Saudi Arabia; E-Mails: (H.A.A.-L.); (A.O.E.)
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28
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Abstract
Free identical nanoobjects include metals, semiconductors, magnetic materials, polymers, bio molecules, are integrated together to form as multifunctional nanomaterials (MFNs), in which more than one behaviour can be rendered simultaneously. This summary showcases their exciting properties which are providing the emerging properties in applications like visualizing and targeting in drug delivery, recoverable and reusable photocatalytic materials. Various application areas, where the multifunctional nanomaterials are now getting the constant place in cutting edge technologies, are highlighted. And also in this, various multifunctional materials and their criteria involving during the integration of assorted materials based on their properties and to be applied according to the requirements of the applications are also explained in detail.
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29
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Liu C, Jiang Z, Tong Z, Li Y, Yang D. Biomimetic synthesis of inorganic nanocomposites by a de novo designed peptide. RSC Adv 2014. [DOI: 10.1039/c3ra44630a] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/02/2023] Open
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30
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Barua S, Chattopadhyay P, Phukan MM, Konwar BK, Islam J, Karak N. Biocompatible hyperbranched epoxy/silver–reduced graphene oxide–curcumin nanocomposite as an advanced antimicrobial material. RSC Adv 2014. [DOI: 10.1039/c4ra07802k] [Citation(s) in RCA: 32] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/05/2023] Open
Abstract
Hyperbranched epoxy/silver–reduced graphene oxide immobilized curcumin nanocomposite as an antimicrobial material.
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Affiliation(s)
- Shaswat Barua
- Advanced Polymer and Nanomaterial Laboratory
- Department of Chemical Sciences
- Tezpur University
- Napaam-784028, India
| | | | - Mayur M. Phukan
- Department of Molecular Biology and Biotechnology
- Tezpur University
- Napaam-784028, India
| | - Bolin K. Konwar
- Department of Molecular Biology and Biotechnology
- Tezpur University
- Napaam-784028, India
| | | | - Niranjan Karak
- Advanced Polymer and Nanomaterial Laboratory
- Department of Chemical Sciences
- Tezpur University
- Napaam-784028, India
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31
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Schneid AC, Roesch EW, Sperb F, Matte U, da Silveira NP, Costa TMH, Benvenutti EV, de Menezes EW. Silver nanoparticle–ionic silsesquioxane: a new system proposed as an antibacterial agent. J Mater Chem B 2014; 2:1079-1086. [DOI: 10.1039/c3tb21057j] [Citation(s) in RCA: 19] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/09/2023]
Abstract
Ionic silsesquioxane applied as a stabilizer of small size silver nanoparticle aqueous dispersions showing antibacterial activity at very low concentration.
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Affiliation(s)
- Andressa C. Schneid
- Instituto de Química
- Universidade Federal do Rio Grande do Sul (UFRGS)
- CP 15003
- Porto Alegre, Brazil
| | | | - Fernanda Sperb
- Hospital de Clínicas de Porto Alegre
- Porto Alegre, Brazil
| | - Ursula Matte
- Hospital de Clínicas de Porto Alegre
- Porto Alegre, Brazil
| | - Nádya P. da Silveira
- Instituto de Química
- Universidade Federal do Rio Grande do Sul (UFRGS)
- CP 15003
- Porto Alegre, Brazil
| | - Tania M. H. Costa
- Instituto de Química
- Universidade Federal do Rio Grande do Sul (UFRGS)
- CP 15003
- Porto Alegre, Brazil
| | - Edilson V. Benvenutti
- Instituto de Química
- Universidade Federal do Rio Grande do Sul (UFRGS)
- CP 15003
- Porto Alegre, Brazil
| | - Eliana W. de Menezes
- Instituto de Química
- Universidade Federal do Rio Grande do Sul (UFRGS)
- CP 15003
- Porto Alegre, Brazil
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32
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Maliszewska I, Juraszek A, Bielska K. Green Synthesis and Characterization of Silver Nanoparticles Using Ascomycota Fungi Penicillium nalgiovense AJ12. J CLUST SCI 2013. [DOI: 10.1007/s10876-013-0683-z] [Citation(s) in RCA: 56] [Impact Index Per Article: 5.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
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33
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You J, Xiang M, Hu H, Cai J, Zhou J, Zhang Y. Aqueous synthesis of silver nanoparticles stabilized by cationic cellulose and their catalytic and antibacterial activities. RSC Adv 2013. [DOI: 10.1039/c3ra42242a] [Citation(s) in RCA: 22] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/23/2023] Open
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