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Ul Haq T, Ullah R. Green thesis and characterization of gold nanoparticles (Au-NPs) using stem extract of Euphorbia neriifolia L. and evaluation of their antibacterial and antifungal potential. INTERNATIONAL JOURNAL OF NANOSCIENCE 2022. [DOI: 10.1142/s0219581x22500089] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/18/2022]
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2
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Bharathi D, Siddlingeshwar B, Hari Krishna R, Kirilova EM, Divakar DD, Alkheraif AA. Interaction of CuO and ZnO nanoparticles with 3-N-(N′-methylacetamidino) benzanthrone: A temperature dependent fluorescence quenching study. INORG CHEM COMMUN 2021. [DOI: 10.1016/j.inoche.2021.109069] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/19/2022]
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3
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Aga MB, Dar AH, Nayik GA, Panesar PS, Allai F, Khan SA, Shams R, Kennedy JF, Altaf A. Recent insights into carrageenan-based bio-nanocomposite polymers in food applications: A review. Int J Biol Macromol 2021; 192:197-209. [PMID: 34624381 DOI: 10.1016/j.ijbiomac.2021.09.212] [Citation(s) in RCA: 29] [Impact Index Per Article: 9.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/01/2021] [Revised: 09/28/2021] [Accepted: 09/30/2021] [Indexed: 10/20/2022]
Abstract
Nanotechnology has proven as progressive technology that enables to contribute, develop several effective and sustainable changes in food products. Incorporating nanomaterials like TiO2, SiO2, Halloysite nano clay, Copper sulfide, Bentonite nano clay, in carrageenan to develop innovative packaging materials with augmented mechanical and antimicrobial properties along with moisture and gas barrier properties that can produce safe and healthy foods. Intervention of carrageenan-based bio-nanocomposites as food packaging constituents has shown promising results in increasing the shelf stability and food quality by arresting the microbial growth. Nanomaterials can be incorporated within the carrageenan for developing active packaging systems for continuous protection of food products under different storage environments from farm to the fork to ensure quality and safety of foods. Carrageenan based bio nanocomposite packaging materials can be helpful to reduce the environmental concerns due to their high biodegradability index. This review gives insight about the current trends in the applications of carrageenan-based bio nanocomposites for different food packaging applications.
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Affiliation(s)
- Mohsin B Aga
- Department of Food Technology, Islamic University of Science and Technology, Awantipora 192122, Kashmir, India
| | - Aamir H Dar
- Department of Food Technology, Islamic University of Science and Technology, Awantipora 192122, Kashmir, India.
| | - Gulzar A Nayik
- Government Degree College, Shopian 192303, Jammu & Kashmir, India
| | - Parmjit S Panesar
- Department of Food Engineering and Technology, Sant Longowal Institute of Engineering and Technology, Longowal 148106, Punjab, India
| | - Farhana Allai
- Department of Food Technology, Islamic University of Science and Technology, Awantipora 192122, Kashmir, India
| | - Shafat A Khan
- Department of Food Technology, Islamic University of Science and Technology, Awantipora 192122, Kashmir, India
| | - Rafeeya Shams
- Division of Food Science and Technology, Sher-e-Kashmir University of Agricultural Sciences and Technology, Jammu 180009, India
| | - John F Kennedy
- Chembiotech Laboratories, Kyrewood House, Tenbury Wells, Worcestershire WR15 8SG, United Kingdom
| | - Aayeena Altaf
- Department of Food Technology, SIST Jamia Hamdard, 110062 New Delhi, India
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4
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Fabrication of gold nanostructure decorated polystyrene hybrid nanosystems via poly(L-DOPA) and their applications in surface-enhanced Raman Spectroscopy (SERS), and catalytic activity. Colloids Surf A Physicochem Eng Asp 2021. [DOI: 10.1016/j.colsurfa.2021.126654] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/07/2023]
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5
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Anvar AA, Ahari H, Ataee M. Antimicrobial Properties of Food Nanopackaging: A New Focus on Foodborne Pathogens. Front Microbiol 2021; 12:690706. [PMID: 34322104 PMCID: PMC8312271 DOI: 10.3389/fmicb.2021.690706] [Citation(s) in RCA: 21] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/03/2021] [Accepted: 06/21/2021] [Indexed: 12/23/2022] Open
Abstract
Food products contaminated by foodborne pathogens (bacteria, parasites, and viruses) cause foodborne diseases. Today, great efforts are being allocated to the development of novel and effective agents against food pathogenic microorganisms. These efforts even might have a possible future effect in coronavirus disease 2019 (COVID-19) pandemic. Nanotechnology introduces a novel food packaging technology that creates and uses nanomaterials with novel physiochemical and antimicrobial properties. It could utilize preservatives and antimicrobials to extend the food shelf life within the package. Utilizing the antimicrobial nanomaterials into food packaging compounds typically involves incorporation of antimicrobial inorganic nanoparticles such as metals [Silver (Ag), Copper (Cu), Gold (Au)], and metal oxides [Titanium dioxide (TiO2), Silicon oxide (SiO2), Zinc oxide (ZnO)]. Alternatively, intelligent food packaging has been explored for recognition of spoilage and pathogenic microorganisms. This review paper focused on antimicrobial aspects of nanopackaging and presented an overview of antibacterial properties of inorganic nanoparticles. This article also provides information on food safety during COVID-19 pandemic.
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Affiliation(s)
- Amir Ali Anvar
- Department of Food Hygiene, Science and Research Branch, Islamic Azad University, Tehran, Iran
| | - Hamed Ahari
- Department of Food Science and Technology, Science and Research Branch, Islamic Azad University, Tehran, Iran
| | - Maryam Ataee
- Department of Food Hygiene, Science and Research Branch, Islamic Azad University, Tehran, Iran
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Si Y, Grazon C, Clavier G, Rieger J, Tian Y, Audibert JF, Sclavi B, Méallet-Renault R. Fluorescent Copolymers for Bacterial Bioimaging and Viability Detection. ACS Sens 2020; 5:2843-2851. [PMID: 32786389 DOI: 10.1021/acssensors.0c00981] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/24/2022]
Abstract
Novel fluorescent labels with high photostability and high biocompatibility are required for microbiological imaging and detection. Here, we present a green fluorescent polymer chain (GFPC), designed to be nontoxic and water-soluble, for multicolor bioimaging and real-time bacterial viability determination. The copolymer is synthesized using a straightforward one-pot reversible addition-fragmentation chain-transfer (RAFT) polymerization technique. We show that GFPC does not influence bacterial growth and is stable for several hours in a complex growth medium and in the presence of bacteria. GFPC allows the labeling of the bacterial cytoplasm for multicolor bacterial bioimaging applications. It can be used in combination with propidium iodide (PI) to develop a rapid and reliable protocol to distinguish and quantify, in real time, by flow cytometry, live and dead bacteria.
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Affiliation(s)
- Yang Si
- Université Paris-Saclay, ENS Paris-Saclay, CNRS, PPSM, 91190 Gif-sur-Yvette, France
- Université Paris-Saclay, ENS Paris-Saclay, CNRS, LBPA, 91190 Gif-sur-Yvette, France
| | - Chloé Grazon
- Université Paris-Saclay, ENS Paris-Saclay, CNRS, PPSM, 91190 Gif-sur-Yvette, France
| | - Gilles Clavier
- Université Paris-Saclay, ENS Paris-Saclay, CNRS, PPSM, 91190 Gif-sur-Yvette, France
| | - Jutta Rieger
- Sorbonne Université, CNRS, Institut Parisien de Chimie Moléculaire, UMR 8232, Equipe Chimie des Polymères, 75252 Paris, France
| | - Yayang Tian
- Université Paris-Saclay, ENS Paris-Saclay, CNRS, PPSM, 91190 Gif-sur-Yvette, France
| | | | - Bianca Sclavi
- Université Paris-Saclay, ENS Paris-Saclay, CNRS, LBPA, 91190 Gif-sur-Yvette, France
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8
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Buruga K, Song H, Shang J, Bolan N, Jagannathan TK, Kim KH. A review on functional polymer-clay based nanocomposite membranes for treatment of water. JOURNAL OF HAZARDOUS MATERIALS 2019; 379:120584. [PMID: 31419722 DOI: 10.1016/j.jhazmat.2019.04.067] [Citation(s) in RCA: 32] [Impact Index Per Article: 6.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/16/2018] [Revised: 03/12/2019] [Accepted: 04/20/2019] [Indexed: 06/10/2023]
Abstract
Water is essential for every living being. Increasing population, mismanagement of water sources, urbanization, industrialization, globalization, and global warming have all contributed to the scarcity of fresh water sources and the growing demand of such resources. Securing and allocating sufficient water resources has thus become one of the current major global challenges. Membrane technology has dominated the field of water purification due to its ease of usage and fabrication with high efficiency. The development of novel membrane materials can hence play a central role in advancing the field of membrane technology. It is noted that polymer-clay nanocomposites have been used widely for treatment of waste water. Nonetheless, not much efforts have been put to functionalize their membranes to be selective for specific targets. This review was organized to offer better insights into various types of functional polymer and clays composite membranes developed for efficient treatment and purification of water/wastewater. Our discussion was extended further to evaluate the efficacy of membrane techniques employed in the water industry against major chemical (e.g., heavy metal, dye, and phenol) and biological contaminants (e.g., biofouling).
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Affiliation(s)
- Kezia Buruga
- Department of Chemical Engineering, National Institute of Technology Karnataka Surathkal 575025, India
| | - Hocheol Song
- Department of Environment and Energy, Sejong University, Seoul 05006, South Korea
| | - Jin Shang
- School of Energy and Environment, City University of Hong Kong, Tat Chee Avenue, Kowloon, Hong Kong, China
| | - Nanthi Bolan
- Department of Civil and Environmental Engineering, Hanyang University, 222 Wangsimni-Ro, Seoul, 04763, South Korea
| | | | - Ki-Hyun Kim
- Department of Civil and Environmental Engineering, Hanyang University, 222 Wangsimni-Ro, Seoul, 04763, South Korea.
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Vasile C. Polymeric Nanocomposites and Nanocoatings for Food Packaging: A Review. MATERIALS (BASEL, SWITZERLAND) 2018; 11:E1834. [PMID: 30261658 PMCID: PMC6213312 DOI: 10.3390/ma11101834] [Citation(s) in RCA: 121] [Impact Index Per Article: 20.2] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 08/12/2018] [Revised: 09/10/2018] [Accepted: 09/22/2018] [Indexed: 01/20/2023]
Abstract
Special properties of the polymeric nanomaterials (nanoscale size, large surface area to mass ratio and high reactivity individualize them in food packaging materials. They can be processed in precisely engineered materials with multifunctional and bioactive activity. This review offers a general view on polymeric nanocomposites and nanocoatings including classification, preparation methods, properties and short methodology of characterization, applications, selected types of them used in food packaging field and their antimicrobial, antioxidant, biological, biocatalyst and so forth, functions.
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Affiliation(s)
- Cornelia Vasile
- Physical Chemistry of Polymers Department, Petru Poni Institute of Macromolecular Chemistry (PPIMC), Romanian Academy, 41A Gr. Ghica Alley, RO 700487 Iasi, Romania.
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Synthesis and antibacterial activity of iron-hexacyanocobaltate nanoparticles. J Biol Inorg Chem 2018; 23:385-398. [PMID: 29478176 DOI: 10.1007/s00775-018-1544-x] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/23/2017] [Accepted: 02/12/2018] [Indexed: 12/11/2022]
Abstract
This paper deals with the synthesis and characterization of iron-hexacyanocobaltate (FeHCC) and its antibacterial properties. The nanoparticles were prepared by a facile co-precipitation technique. Crystal structure, particle morphology, and elemental composition were determined using X-ray Powder Diffraction, X-ray fluorescence spectroscopy, Transmission Electron Microscopy (TEM), and Infrared Spectroscopy (IR). The antibacterial activity of the FeHCC nanoparticles was tested against Escherichia coli and Staphylococcus aureus as models for Gram-negative and Gram-positive bacteria, respectively, by bacterial counting method and microscopic visualization (TEM, FEG-SEM, and fluorescence microscopy). The results showed that the FeHCC nanoparticles bind to the bacterial cells, inhibit bacterial growth in a dose- and time-dependent manner, inducing a loss of the membrane potential, the production of reactive oxygen species and the release of macromolecules (nucleic acids and proteins) in the extracellular environment. To the best of our knowledge, this is the first study reporting the antimicrobial effects of metal-hexacyanometallates suggesting practical uses of these materials in different areas, such as self-cleaning surfaces or food packaging.
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Dasgupta N, Ranjan S. Nanotechnology in Food Packaging. AN INTRODUCTION TO FOOD GRADE NANOEMULSIONS 2018. [DOI: 10.1007/978-981-10-6986-4_8] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/08/2023]
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12
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Emmanuel R, Saravanan M, Ovais M, Padmavathy S, Shinwari ZK, Prakash P. Antimicrobial efficacy of drug blended biosynthesized colloidal gold nanoparticles from Justicia glauca against oral pathogens: A nanoantibiotic approach. Microb Pathog 2017; 113:295-302. [DOI: 10.1016/j.micpath.2017.10.055] [Citation(s) in RCA: 76] [Impact Index Per Article: 10.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/05/2017] [Revised: 10/27/2017] [Accepted: 10/27/2017] [Indexed: 11/28/2022]
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Yemmireddy VK, Hung YC. Using Photocatalyst Metal Oxides as Antimicrobial Surface Coatings to Ensure Food Safety-Opportunities and Challenges. Compr Rev Food Sci Food Saf 2017; 16:617-631. [PMID: 33371565 DOI: 10.1111/1541-4337.12267] [Citation(s) in RCA: 71] [Impact Index Per Article: 10.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/23/2017] [Revised: 03/30/2017] [Accepted: 03/31/2017] [Indexed: 11/30/2022]
Abstract
Cross-contamination of foods with pathogenic microorganisms such as bacteria, viruses, and parasites may occur at any point in the farm to fork continuum. Food contact and nonfood contact surfaces are the most frequent source of microbial cross-contamination. In the wake of new and emerging food safety challenges, including antibiotic-resistant human pathogens, conventional sanitation and disinfection practices may not be sufficient to ensure safe food processing, proper preparation, and also not be environmentally friendly. Nanotechnology-enabled novel food safety interventions have a great potential to mitigate the risk of microbial cross-contamination in the food chain. Especially engineered nanoparticles (ENPs) are increasingly finding novel applications as antimicrobial agents. Among various ENPs, photocatalyst metal oxides have shown great promise as effective nontargeted disinfectants over a wide range of microorganisms. The present review provides an overview of antimicrobial properties of various photocatalyst metal oxides and their potential applications as surface coatings. Further, this review discusses the most common approaches to developing antimicrobial coatings, methods to characterize, test, and evaluate antimicrobial efficacy as well as the physical stability of the coatings. Finally, regulations and challenges concerning the use of these novel photocatalytic antimicrobial coatings are also discussed.
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Affiliation(s)
- Veerachandra K Yemmireddy
- Dept. of Food Science and Technology, Univ. of Georgia, 1109 Experiment Street, Griffin, Ga., 30223-1797, U.S.A
| | - Yen-Con Hung
- Dept. of Food Science and Technology, Univ. of Georgia, 1109 Experiment Street, Griffin, Ga., 30223-1797, U.S.A
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Alkhatib MH, Aly MM, Saleh OA, Gashlan HM. Antibacterial activity of a microemulsion loaded with cephalosporin. Biologia (Bratisl) 2016. [DOI: 10.1515/biolog-2016-0105] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022]
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15
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Jafari A, Jafarpour A, Safari R. Influence of Chitosan Nanocomposite and Rosemary (Rosmarinus officinalis L.) Extract Coating on Quality of Huso huso Fillet Inoculated with Listeria monocytogenes During Refrigerated Storage. JOURNAL OF AQUATIC FOOD PRODUCT TECHNOLOGY 2016. [DOI: 10.1080/10498850.2016.1266427] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 10/20/2022]
Affiliation(s)
- Alika Jafari
- Department of Fisheries, Faculty of Animal Science and Fisheries, Sari Agriculture Science and Natural Resources University (SANRU), Sari, Iran
| | - Ali Jafarpour
- Department of Fisheries, Faculty of Animal Science and Fisheries, Sari Agriculture Science and Natural Resources University (SANRU), Sari, Iran
| | - Reza Safari
- Caspian Sea Ecology Research Institute in Ecology, Sari, Iran
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Kim I, Moon JS, Oh JW. Recent advances in M13 bacteriophage-based optical sensing applications. NANO CONVERGENCE 2016; 3:27. [PMID: 28191437 PMCID: PMC5271159 DOI: 10.1186/s40580-016-0087-5] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/05/2016] [Accepted: 10/07/2016] [Indexed: 05/03/2023]
Abstract
Recently, M13 bacteriophage has started to be widely used as a functional nanomaterial for various electrical, chemical, or optical applications, such as battery components, photovoltaic cells, sensors, and optics. In addition, the use of M13 bacteriophage has expanded into novel research, such as exciton transporting. In these applications, the versatility of M13 phage is a result of its nontoxic, self-assembling, and specific binding properties. For these reasons, M13 phage is the most powerful candidate as a receptor for transducing chemical or optical phenomena of various analytes into electrical or optical signal. In this review, we will overview the recent progress in optical sensing applications of M13 phage. The structural and functional characters of M13 phage will be described and the recent results in optical sensing application using fluorescence, surface plasmon resonance, Förster resonance energy transfer, and surface enhanced Raman scattering will be outlined.
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Affiliation(s)
- Inhong Kim
- Research Center for Energy Convergence Technology, Pusan National University, Busan, 46241 Republic of Korea
| | - Jong-Sik Moon
- BK21 Plus Division of Nano Convergence Technology, Pusan National University, Busan, 46241 Republic of Korea
| | - Jin-Woo Oh
- Research Center for Energy Convergence Technology, Pusan National University, Busan, 46241 Republic of Korea
- BK21 Plus Division of Nano Convergence Technology, Pusan National University, Busan, 46241 Republic of Korea
- Department of Nanoenergy Engineering, Pusan National University, Busan, 46241 Republic of Korea
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17
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Efficacy of Nanostructures as Preservation Carriers of Bacillus atrophaeus in the Preparation of Sterilization Bioindicators. J Pharm Innov 2016. [DOI: 10.1007/s12247-016-9260-y] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/21/2022]
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18
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Ponnuvelu DV, Suriyaraj SP, Vijayaraghavan T, Selvakumar R, Pullithadathail B. Enhanced cell-wall damage mediated, antibacterial activity of core-shell ZnO@Ag heterojunction nanorods against Staphylococcus aureus and Pseudomonas aeruginosa. JOURNAL OF MATERIALS SCIENCE. MATERIALS IN MEDICINE 2015; 26:204. [PMID: 26152512 DOI: 10.1007/s10856-015-5535-y] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/19/2015] [Accepted: 07/01/2015] [Indexed: 06/04/2023]
Abstract
Hybrid ZnO@Ag core-shell nanorods have been synthesized by a synthetic strategy based on seed mediated growth. Formation of core-shell nanostructures was confirmed by UV- diffused reflectance spectroscopy (UV-DRS), X-ray diffraction studies, field emission scanning electron microscopy and high resolution transmission electron microscopy. UV-DRS analysis of hybrid core-shell nanorods suggests the possibility of interfacial electron transfer between surface anchored Ag nanoclusters and ZnO nanorods. Successful decoration of Ag nanoclusters with an average diameter of ~7 ± 0.5 nm was observed forming the heterojunctions on the surface of the ZnO nanorods. An enhanced antibacterial property was observed for the ZnO@Ag core-shell nanorods against both Staphylococcus aureus and Pseudomonas aeruginosa lbacteria. The synergetic antibacterial activity of ZnO@Ag nanorods was found to be more prominent against Gram-positive bacteria than Gram-negative bacteria. The plausible reason for this enhanced antibacterial activity of the core-shell nanorods can be attributed to the physical damage caused by the interaction of the material with outer cell wall layer due to the production of reactive oxygen species by interfacial electron transfer between ZnO nanorods and plasmonic Ag nanoclusters. Overall, the ZnO@Ag core-shell nanorods were found to be promising materials that could be developed further as an effective antibacterial agent against wide range of microorganisms to control spreading and persistence of bacterial infections.
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Affiliation(s)
- Dinesh Veeran Ponnuvelu
- Nanosensor Laboratory, Nanotech Research, Innovation and Incubation Facility, PSG Institute of Advanced Studies, Post Box No: 1609, Avinashi Road, Peelamedu, Coimbatore, 641 004, India
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Jayabharathi J, Karunakaran C, Ramanathan P. Binding interaction between 2-(naphthalen-1-yl)-1-p-tolyl-1H-phenanthro[9,10-d]imidazole and semiconductor nanomaterials. SPECTROCHIMICA ACTA. PART A, MOLECULAR AND BIOMOLECULAR SPECTROSCOPY 2015; 136 Pt C:1428-1433. [PMID: 25459702 DOI: 10.1016/j.saa.2014.10.032] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/31/2014] [Revised: 07/04/2014] [Accepted: 10/13/2014] [Indexed: 06/04/2023]
Abstract
The binding interaction of bioactive phenanthrimidazole with nanoparticulate WO3, Fe2O3, Fe3O4, CuO, ZrO2 and Al2O3 has been studied by electronic and life time spectral studies. The phenanthrimidazole adsorbs strongly on the surface of nanosemiconductor, the apparent binding constants have been determined from the fluorescence quenching. In the case of nanocrystalline insulator, fluorescence quenching through electron transfer from the excited state of the phenanthrimidazole to alumina is not possible, but it is due to energy transfer process.
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Affiliation(s)
- J Jayabharathi
- Department of Chemistry, Annamalai University, Annamalainagar 608002, Tamil Nadu, India.
| | - C Karunakaran
- Department of Chemistry, Annamalai University, Annamalainagar 608002, Tamil Nadu, India
| | - P Ramanathan
- Department of Chemistry, Annamalai University, Annamalainagar 608002, Tamil Nadu, India
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21
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Rispail N, De Matteis L, Santos R, Miguel AS, Custardoy L, Testillano PS, Risueño MC, Pérez-de-Luque A, Maycock C, Fevereiro P, Oliva A, Fernández-Pacheco R, Ibarra MR, de la Fuente JM, Marquina C, Rubiales D, Prats E. Quantum dot and superparamagnetic nanoparticle interaction with pathogenic fungi: internalization and toxicity profile. ACS APPLIED MATERIALS & INTERFACES 2014; 6:9100-10. [PMID: 24853082 DOI: 10.1021/am501029g] [Citation(s) in RCA: 29] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/27/2023]
Abstract
For several years now, nanoscaled materials have been implemented in biotechnological applications related to animal (in particular human) cells and related pathologies. However, the use of nanomaterials in plant biology is far less widespread, although their application in this field could lead to the future development of plant biotechnology applications. For any practical use, it is crucial to elucidate the relationship between the nanomaterials and the target cells. In this work we have evaluated the behavior of two types of nanomaterials, quantum dots and superparamagnetic nanoparticles, on Fusarium oxysporum, a fungal species that infects an enormous range of crops causing important economic losses and is also an opportunistic human pathogen. Our results indicated that both nanomaterials rapidly interacted with the fungal hypha labeling the presence of the pathogenic fungus, although they showed differential behavior with respect to internalization. Thus, whereas magnetic nanoparticles appeared to be on the cell surface, quantum dots were significantly taken up by the fungal hyphae showing their potential for the development of novel control approaches of F. oxysporum and related pathogenic fungi following appropriate functionalization. In addition, the fungal germination and growth, accumulation of ROS, indicative of cell stress, and fungal viability have been evaluated at different nanomaterial concentrations showing the low toxicity of both types of nanomaterials to the fungus. This work represents the first study on the behavior of quantum dots and superparamagnetic particles on fungal cells, and constitutes the first and essential step to address the feasibility of new nanotechnology-based systems for early detection and eventual control of pathogenic fungi.
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Affiliation(s)
- Nicolas Rispail
- Instituto de Agricultura Sostenible, CSIC , Alameda del Obispo s/n, Córdoba, Spain
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Issadore D, Chung HJ, Chung J, Budin G, Weissleder R, Lee H. μHall chip for sensitive detection of bacteria. Adv Healthc Mater 2013; 2:1224-8. [PMID: 23495188 PMCID: PMC4340655 DOI: 10.1002/adhm.201200380] [Citation(s) in RCA: 50] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/22/2012] [Indexed: 11/10/2022]
Abstract
Sensitive, rapid and phenotype-specific enumeration of pathogens is essential for the diagnosis of infectious disease, monitoring of food chains, and for defense against bioterrorism. Microbiological culture and genotyping, techniques that sensitively and selectively detect bacteria in laboratory settings, have limited application in clinical environments due to high cost, slow response times, and the need for specially trained staff and laboratory infrastructure. To address these challenges, we developed a microfluidic chip-based micro-Hall (μHall) platform capable of measuring single, magnetically tagged bacteria directly in clinical specimens with minimal sample processing. We demonstrated the clinical utility of the μHall chip by enumerating Gram-positive bacteria. The overall detection limit of the system was similar to that of culture tests (~10 bacteria), but the assay time was 50-times faster. This low-cost, single-cell analytical technique is especially well-suited to diagnose infectious diseases in resource-limited clinical settings.
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Affiliation(s)
- David Issadore
- Center for Systems Biology, Massachusetts General Hospital, 185 Cambridge St, CPZN 5206, Boston, MA 02114
| | - Hyun Jung Chung
- Center for Systems Biology, Massachusetts General Hospital, 185 Cambridge St, CPZN 5206, Boston, MA 02114
| | - Jaehoon Chung
- Center for Systems Biology, Massachusetts General Hospital, 185 Cambridge St, CPZN 5206, Boston, MA 02114
| | - Ghyslain Budin
- Center for Systems Biology, Massachusetts General Hospital, 185 Cambridge St, CPZN 5206, Boston, MA 02114
| | - Ralph Weissleder
- Center for Systems Biology, Massachusetts General Hospital, 185 Cambridge St, CPZN 5206, Boston, MA 02114
- Department of Systems Biology, Harvard Medical School, Boston, MA 02115
| | - Hakho Lee
- Center for Systems Biology, Massachusetts General Hospital, 185 Cambridge St, CPZN 5206, Boston, MA 02114
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Karunakaran C, Jayabharathi J, Jayamoorthy K. Fluorescence quenching of organic molecule by insulator. SPECTROCHIMICA ACTA. PART A, MOLECULAR AND BIOMOLECULAR SPECTROSCOPY 2013; 112:417-421. [PMID: 23707997 DOI: 10.1016/j.saa.2013.04.093] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/15/2012] [Revised: 04/12/2013] [Accepted: 04/24/2013] [Indexed: 06/02/2023]
Abstract
A new kind of fluorophore 2-(4-fluorophenyl)-1-phenyl-1H-benzo[d]imidazole (FPPBI) has been synthesized and characterized by (1)H NMR, (13)C NMR, mass spectral studies and single crystal XRD. The energy transfer from FPPBI to Al2O3 nanocrystals has been studied by absorption, fluorescence and lifetime spectroscopic methods. The association between nanoparticles and FPPBI is explained from both absorption and fluorescence quenching data. The distance between FPPBI and Al2O3 as well as the critical energy transfer distance has been deduced.
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Affiliation(s)
- C Karunakaran
- Department of Chemistry, Annamalai University, Annamalainagar 608 002, Tamilnadu, India
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Binding, unfolding and refolding dynamics of serum albumins. Biochim Biophys Acta Gen Subj 2013; 1830:5394-404. [PMID: 23707713 DOI: 10.1016/j.bbagen.2013.05.017] [Citation(s) in RCA: 61] [Impact Index Per Article: 5.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/28/2013] [Revised: 05/08/2013] [Accepted: 05/13/2013] [Indexed: 10/26/2022]
Abstract
BACKGROUND The serum albumins (human and bovine serum albumin) occupy a seminal position among all proteins investigated until today as they are the most abundant circulatory proteins. They play the major role of a transporter of many bio-active substances which include various fatty acids, drug molecules, and amino acids to the target cells. Hence, studying the interaction of these serum albumins with different binding agents has attracted enormous research interests from decades. The nature and magnitude of these bindings have direct consequence on drug delivery, pharmacokinetics, therapeutic efficacy and drug design and control. SCOPE OF THE REVIEW In the present review, we summarize the binding characteristics of both the serum albumins with surfactants, lipids and vesicles, polymers and dendrimers, nanomaterials and drugs. Finally we have reviewed the effect of various chemical and physical denaturants on these albumins with a special emphasis on protein unfolding and refolding dynamics. MAJOR CONCLUSIONS The topic of binding and dynamics of protein unfolding and refolding spans across all areas of inter-disciplinary sciences and will benefit clinical toxicology and medicines. The extensive data from several contemporary research based on albumins will help us to understand protein dynamics in a more illustrious manner. GENERAL SIGNIFICANCE These data have immense significance in understanding and unravelling the mechanisms of protein unfolding/refolding and thus can pave the way to prevent protein mis-folding/aggregation which sometimes leads to severe consequences like Parkinson's and Alzheimer's diseases. This article is a part of a Special Issue entitled Serum Albumin. This article is part of a Special Issue entitled Serum Albumin.
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Binding of serum albumins with bioactive substances – Nanoparticles to drugs. JOURNAL OF PHOTOCHEMISTRY AND PHOTOBIOLOGY C-PHOTOCHEMISTRY REVIEWS 2013. [DOI: 10.1016/j.jphotochemrev.2012.09.001] [Citation(s) in RCA: 160] [Impact Index Per Article: 14.5] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/29/2023]
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Karunakaran C, Jayabharathi J, Jayamoorthy K, Vinayagamoorthy P. Photoinduced electron-transfer from benzimidazole to nanocrystals. J Mol Liq 2013. [DOI: 10.1016/j.molliq.2012.10.032] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
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Wu Q, Li Y, Wang M, Wu ZG, Huang BH. Rapid identification of Staphylococcus aureus directly from positive blood culture media using quantum dots as fluorescence probes. APMIS 2012; 121:348-52. [PMID: 23030047 DOI: 10.1111/apm.12005] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/20/2012] [Accepted: 08/26/2012] [Indexed: 11/28/2022]
Abstract
The subcultivation of positive blood cultures for organism identification is a time-consuming process. We explored the use of fluorescent quantum dots (QDs) as probes for the improved detection and identification of Staphylococcus aureus directly from positive blood culture media. Immunofluorescence probes were synthesized by linking biotin-conjugated QDs to streptavidin-conjugated IgG molecules. This QDs-IgG complex is capable of binding anti-SPA antibodies which specifically bind to a cell surface protein of S. aureus. The specificity of the method was confirmed using reference strains. Among 372 positive blood cultures, 73 containing gram-positive cocci in clusters were investigated. Relative to the standard culture method, the immunofluorescence assay showed 90.5% (19/21) sensitivity and 100% (52/52) specificity for S. aureus. These results suggest that this immunofluorescence assay allows the rapid identification of S. aureus directly from specimens.
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Affiliation(s)
- Qing Wu
- Department of Clinical Laboratory, Renmin Hospital of Wuhan University, Wuhan, China
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Nagajyothi P, Lee SE, An M, Lee KD. Green Synthesis of Silver and Gold Nanoparticles Using Lonicera Japonica Flower Extract. B KOREAN CHEM SOC 2012. [DOI: 10.5012/bkcs.2012.33.8.2609] [Citation(s) in RCA: 34] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022]
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Lkhagvadulam B, Kim JH, Yoon I, Shim YK. Synthesis and photodynamic activities of novel water soluble purpurin-18-N-methyl-D-glucamine photosensitizer and its gold nanoparticles conjugate. J PORPHYR PHTHALOCYA 2012. [DOI: 10.1142/s1088424612500708] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/18/2022]
Abstract
A new type of water soluble ionic photosensitizer (PS), purpurin-18-N-methyl-D-glucamine (Pu-18-NMGA) has been synthesized and it was conjugated into gold nanoparticles (GNPs) stabilized by the PS without adding any particular reducing agents and surfactants. In vitro anticancer efficacy of the PS and its PS–GNPs conjugate against A549 lung cancer cell lines was evaluated. The PS–GNPs conjugate based on water-soluble Pu-18-NMGA afforded good PDT efficacy which was three times greater than that of the water-soluble PS.
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Affiliation(s)
- Byambajav Lkhagvadulam
- PDT Research Institute, School of Nano System Engineering, Inje University, Gimhae 621-749, South Korea
| | - Jung Hwa Kim
- PDT Research Institute, School of Nano System Engineering, Inje University, Gimhae 621-749, South Korea
| | - Il Yoon
- PDT Research Institute, School of Nano System Engineering, Inje University, Gimhae 621-749, South Korea
| | - Young Key Shim
- PDT Research Institute, School of Nano System Engineering, Inje University, Gimhae 621-749, South Korea
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A novel study of antibacterial activity of copper iodide nanoparticle mediated by DNA and membrane damage. Colloids Surf B Biointerfaces 2012; 96:50-5. [PMID: 22521682 DOI: 10.1016/j.colsurfb.2012.03.021] [Citation(s) in RCA: 93] [Impact Index Per Article: 7.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/14/2011] [Revised: 02/08/2012] [Accepted: 03/28/2012] [Indexed: 11/20/2022]
Abstract
In this article potential activity of nanoparticles (NPs) of copper iodide (CuI) as an antibacterial agent has been presented. The nano particles are synthesized by co-precipitation method with an average size of 8 nm as determined by Transmission Electron Microscope (TEM). The average charge of the NPs is -21.5 mV at pH 7 as obtained by zeta potential measurement and purity is determined by XRD. These NPs are able to kill both gram positive and gram negative bacteria. Among the bacteria tested, DH5α is more sensitive but Bacillus subtilis is more resistant to NPs of CuI. Consequently, the MIC and MBC values of DH5α is least (0.066 mg/ml and 0.083 mg/ml respectively) and B. subtilis is highest (0.15 mg/ml and 0.18 mg/ml respectively) among the tested bacterial strains. From our studies it is inferred that CuI NPs produce reactive oxygen species (ROS) in both gram negative and gram positive bacteria and it also causes ROS mediated DNA damage for the suppression of transcription as revealed by reporter gene assay. Probably ROS is formed on the surface of NPs of CuI in presence of amine functional groups of various biological molecules. Furthermore they induce membrane damage as determined by atomic force microscopy (AFM). Thus production of ROS and membrane damage are major mechanisms of the bactericidal activity of these NPs of CuI.
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Shinde SB, Fernandes CB, Patravale VB. Recent trends in in-vitro nanodiagnostics for detection of pathogens. J Control Release 2012; 159:164-80. [DOI: 10.1016/j.jconrel.2011.11.033] [Citation(s) in RCA: 62] [Impact Index Per Article: 5.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/21/2011] [Accepted: 11/23/2011] [Indexed: 11/17/2022]
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Jiménez A, Ruseckaite RA. Nano-Biocomposites for Food Packaging. ENVIRONMENTAL SILICATE NANO-BIOCOMPOSITES 2012. [DOI: 10.1007/978-1-4471-4108-2_15] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/20/2023]
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Sharma TK, Chopra A, Sapra M, Kumawat D, Patil SD, Pathania R, Navani NK. Green Synthesis and Antimicrobial Potential of Silver Nanoparticles. ACTA ACUST UNITED AC 2012. [DOI: 10.1080/19430892.2012.656040] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/28/2022]
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Selective capturing and detection of Salmonella typhi on polycarbonate membrane using bioconjugated quantum dots. Talanta 2011; 84:952-62. [DOI: 10.1016/j.talanta.2011.02.052] [Citation(s) in RCA: 22] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/14/2011] [Revised: 02/20/2011] [Accepted: 02/23/2011] [Indexed: 11/20/2022]
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Marradi M, García I, Penadés S. Carbohydrate-Based Nanoparticles for Potential Applications in Medicine. PROGRESS IN MOLECULAR BIOLOGY AND TRANSLATIONAL SCIENCE 2011; 104:141-73. [DOI: 10.1016/b978-0-12-416020-0.00004-8] [Citation(s) in RCA: 22] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/20/2022]
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Khlebtsov N, Dykman L. Biodistribution and toxicity of engineered gold nanoparticles: a review of in vitro and in vivo studies. Chem Soc Rev 2011; 40:1647-71. [DOI: 10.1039/c0cs00018c] [Citation(s) in RCA: 1185] [Impact Index Per Article: 91.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/11/2022]
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Guven B, Basaran-Akgul N, Temur E, Tamer U, Boyaci IH. SERS-based sandwich immunoassay using antibody coated magnetic nanoparticles for Escherichia coli enumeration. Analyst 2010; 136:740-8. [PMID: 21125089 DOI: 10.1039/c0an00473a] [Citation(s) in RCA: 177] [Impact Index Per Article: 12.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/17/2023]
Abstract
A method combining immunomagnetic separation (IMS) and surface-enhanced Raman scattering (SERS) was developed to enumerate Escherichia coli (E. coli). Gold-coated magnetic spherical nanoparticles were prepared by immobilizing biotin-labeled anti-E. coli antibodies onto avidin-coated magnetic nanoparticles and used in the separation and concentration of the E. coli cells. Raman labels have been constructed using rod shaped gold nanoparticles coated with 5,5-dithiobis-(2-nitrobenzoic acid) (DTNB) and subsequently with a molecular recognizer. Then DTNB-labeled gold nanorods were interacted with gold-coated magnetic spherical nanoparticle-antibody-E. coli complex. The capture efficiency and calibration graphs were obtained and examined in different E. coli concentrations (10(1)-10(7) cfu mL(-1)). The correlation between the concentration of bacteria and SERS signal was found to be linear within the range of 10(1)-10(4) cfu mL(-1) (R(2) = 0.992). The limit of detection (LOD) and limit of quantification (LOQ) values of the developed method were found to be 8 and 24 cfu mL(-1), respectively. The selectivity of the developed immunoassay was examined with Enterobacter aerogenes, Enterobacter dissolvens, and Salmonella enteriditis which did not produce any significant response. The ability of the immunoassay to detect E. coli in real water samples was also investigated and the results were compared with the experimental results from plate-counting methods. There was no significant difference between the methods that were compared (p > 0.05). This method is rapid and sensitive to target organisms with a total analysis time of less than 70 min.
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Affiliation(s)
- Burcu Guven
- Department of Food Engineering, Faculty of Engineering, Hacettepe University, Beytepe Ankara, Turkey
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38
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Naveenraj S, Anandan S, Kathiravan A, Renganathan R, Ashokkumar M. The interaction of sonochemically synthesized gold nanoparticles with serum albumins. J Pharm Biomed Anal 2010; 53:804-10. [DOI: 10.1016/j.jpba.2010.03.039] [Citation(s) in RCA: 80] [Impact Index Per Article: 5.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/29/2009] [Revised: 03/24/2010] [Accepted: 03/25/2010] [Indexed: 11/30/2022]
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García I, Marradi M, Penadés S. Glyconanoparticles: multifunctional nanomaterials for biomedical applications. Nanomedicine (Lond) 2010; 5:777-92. [DOI: 10.2217/nnm.10.48] [Citation(s) in RCA: 71] [Impact Index Per Article: 5.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/31/2023] Open
Abstract
Metal-based glyconanoparticles (GNPs) are biofunctional nanomaterials that combine the unique physical, chemical and optical properties of the metallic nucleus with the characteristics of the carbohydrate coating. The latter characteristics comprise a series of advantages that range from ensuring water solubility, biocompatibility and stability to targeting properties. The selection of suitable carbohydrates for specifically targeting biomarkers opens up the possibility to employ metallic GNPs in diagnostics and/or therapy. Within the vast nanoscience field, this review intends to focus on the advances of multifunctional and multimodal GNPs, which make use of the ‘glycocode’ to specifically address pathogens or pathological-related biomedical problems. Examples of their potential application in antiadhesion therapy and diagnosis are highlighted. From the ex vivo diagnostic perspective, it can be predicted that GNPs will soon be used clinically. However, the in vivo application of metallic GNPs in humans will probably need more time. In particular, major concerns regarding nanotoxicity need to be exhaustively addressed. However, it is expected that the sugar shell of GNPs will lower the intrinsic toxicity of metal nanoclusters better than other non-natural coatings.
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Affiliation(s)
- Isabel García
- Laboratory of GlycoNanotechnology, CIC biomaGUNE/CIBER-BBN, Parque Tecnológico de San Sebastián, Pº de Miramón182, 20009 San Sebastián, Spain
| | - Marco Marradi
- Laboratory of GlycoNanotechnology, CIC biomaGUNE/CIBER-BBN, Parque Tecnológico de San Sebastián, Pº de Miramón182, 20009 San Sebastián, Spain
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40
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Muthaiyan A, Ricke SC. Current perspectives on detection of microbial contamination in bioethanol fermentors. BIORESOURCE TECHNOLOGY 2010; 101:5033-5042. [PMID: 19951838 DOI: 10.1016/j.biortech.2009.11.005] [Citation(s) in RCA: 11] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/01/2009] [Revised: 10/31/2009] [Accepted: 11/02/2009] [Indexed: 05/28/2023]
Abstract
In recent years bioethanol has encompassed worldwide interest as a non-conventional bioenergy source. This fact has driven several bioethanol industries to produce more ethanol on a large scale via cost effective methods. However in the process of scaling up ethanol production bacterial contamination is becoming one of the more challenging problems facing the bioethanol industry. There are several traditional microbiological methods available to detect and subsequently limit these bacterial contaminants. These methods are time consuming, laborious and can be less sensitive. Consequently, it is necessary to find novel sensitive and economic detection methods to eradicate the contaminants long before they disrupt ethanol production. Molecular methods that can detect the contaminants even at very low numbers at any given stage would help in the design of more cost effective eradication strategies and better targeted antimicrobial treatments. Application of rapid molecular detection approaches have the potential to provide much more sensitive and rapid means to not only detect but quantitate microbial contaminants long before they become problematic to overall bioethanol formation.
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Affiliation(s)
- Arunachalam Muthaiyan
- Center for Food Safety, IFSE and Department of Food Science, University of Arkansas, Fayetteville, AR 72704, USA
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Lee H, Yoon TJ, Weissleder R. Ultrasensitive detection of bacteria using core-shell nanoparticles and an NMR-filter system. Angew Chem Int Ed Engl 2009; 48:5657-60. [PMID: 19554581 DOI: 10.1002/anie.200901791] [Citation(s) in RCA: 165] [Impact Index Per Article: 11.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
Affiliation(s)
- Hakho Lee
- Center for Systems Biology, Massachusetts General Hospital/Harvard Medical School, 185 Cambridge Street, Boston, MA 02114, USA
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44
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Lee H, Yoon TJ, Weissleder R. Ultrasensitive Detection of Bacteria Using Core-Shell Nanoparticles and an NMR-Filter System. Angew Chem Int Ed Engl 2009. [DOI: 10.1002/ange.200901791] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022]
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45
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Burygin GL, Khlebtsov BN, Shantrokha AN, Dykman LA, Bogatyrev VA, Khlebtsov NG. On the Enhanced Antibacterial Activity of Antibiotics Mixed with Gold Nanoparticles. NANOSCALE RESEARCH LETTERS 2009; 4:794-801. [PMID: 20596384 PMCID: PMC2894127 DOI: 10.1007/s11671-009-9316-8] [Citation(s) in RCA: 111] [Impact Index Per Article: 7.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/17/2008] [Accepted: 04/06/2009] [Indexed: 05/03/2023]
Abstract
The bacterial action of gentamicin and that of a mixture of gentamicin and 15-nm colloidal-gold particles on Escherichia coli K12 was examined by the agar-well-diffusion method, enumeration of colony-forming units, and turbidimetry. Addition of gentamicin to colloidal gold changed the gold color and extinction spectrum. Within the experimental errors, there were no significant differences in antibacterial activity between pure gentamicin and its mixture with gold nanoparticles (NPs). Atomic absorption spectroscopy showed that upon application of the gentamicin-particle mixture, there were no gold NPs in the zone of bacterial-growth suppression in agar. Yet, free NPs diffused into the agar. These facts are in conflict with the earlier findings indicating an enhancement of the bacterial activity of similar gentamicin-gold nanoparticle mixtures. The possible causes for these discrepancies are discussed, and the suggestion is made that a necessary condition for enhancement of antibacterial activity is the preparation of stable conjugates of NPs coated with the antibiotic molecules.
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Affiliation(s)
- GL Burygin
- Institute of Biochemistry and Physiology of Plants and Microorganisms, Russian Academy of Sciences, 13 Prospekt Entuziastov, 410049, Saratov, Russia
- Saratov State University, 83 Ulitsa Astrakhanskaya, 410026, Saratov, Russia
| | - BN Khlebtsov
- Institute of Biochemistry and Physiology of Plants and Microorganisms, Russian Academy of Sciences, 13 Prospekt Entuziastov, 410049, Saratov, Russia
| | - AN Shantrokha
- Saratov State University, 83 Ulitsa Astrakhanskaya, 410026, Saratov, Russia
| | - LA Dykman
- Institute of Biochemistry and Physiology of Plants and Microorganisms, Russian Academy of Sciences, 13 Prospekt Entuziastov, 410049, Saratov, Russia
| | - VA Bogatyrev
- Institute of Biochemistry and Physiology of Plants and Microorganisms, Russian Academy of Sciences, 13 Prospekt Entuziastov, 410049, Saratov, Russia
- Saratov State University, 83 Ulitsa Astrakhanskaya, 410026, Saratov, Russia
| | - NG Khlebtsov
- Institute of Biochemistry and Physiology of Plants and Microorganisms, Russian Academy of Sciences, 13 Prospekt Entuziastov, 410049, Saratov, Russia
- Saratov State University, 83 Ulitsa Astrakhanskaya, 410026, Saratov, Russia
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Abstract
Viruses have recently proven useful for the detection of target analytes such as explosives, proteins, bacteria, viruses, spores, and toxins with high selectivity and sensitivity. Bacteriophages (often shortened to phages), viruses that specifically infect bacteria, are currently the most studied viruses, mainly because target-specific nonlytic phages (and the peptides and proteins carried by them) can be identified by using the well-established phage display technique, and lytic phages can specifically break bacteria to release cell-specific marker molecules such as enzymes that can be assayed. In addition, phages have good chemical and thermal stability, and can be conjugated with nanomaterials and immobilized on a transducer surface in an analytical device. This Review focuses on progress made in the use of phages in chemical and biological sensors in combination with traditional analytical techniques. Recent progress in the use of virus-nanomaterial composites and other viruses in sensing applications is also highlighted.
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Affiliation(s)
- Chuanbin Mao
- Department of Chemistry & Biochemistry, University of Oklahoma, Norman, OK 73019, USA.
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Affiliation(s)
- Weian Zhao
- Department of Chemistry, McMaster University, Canada.
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