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Harmful bacteria are the most common cause of food- and waterborne illnesses. Infection often leads to bloody diarrhoea, and occasionally to kidney failure. Several strains of the bacteria Escherichia coli produce a powerful toxin which causes serious illness. Food and water can be contaminated with other bacteria like Salmonella, Coliform, Pseudomonas, etc. Hence, it has become important to rapidly detect and identify infectious bacteria. Colloidal luminescent semiconductor nanocrystals or quantum dots (QDs) have elicited a great deal of interest in the biosensing community due to their unique fluorescent properties. Here ZnS : Mn2+ QDs are synthesised and biofunctionalised with chitosan. They are attached to the anionic cell wall of E. coli bacteria and different properties of this compound system are studied. These nanocrystals may offer cost effective and quicker alternative to detect single bacterium compared to other conventional methods. Several characterization methods are discussed. The particle size calculated is approximately 8–10 nm. The blue shift of PL peak has been observed after the bacteria get attached.
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Sonal Mazumder is a Research Assistant in Virginia Polytechnic Institute and State University from Blacksburg, Virginia, United States. She did her Chemical Engineering from Heritage Institute of Technology, Kolkata, India and then received a M.Tech in Nanoscience and Technology from Jadavpur University, Kolkata.
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- PublisherLAP LAMBERT Academic Publishing
- Publication date2013
- ISBN 10 3847326902
- ISBN 13 9783847326908
- BindingPaperback
- Number of pages76
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Book Description Taschenbuch. Condition: Neu. This item is printed on demand - it takes 3-4 days longer - Neuware -Harmful bacteria are the most common cause of food- and waterborne illnesses. Infection often leads to bloody diarrhoea, and occasionally to kidney failure. Several strains of the bacteria Escherichia coli produce a powerful toxin which causes serious illness. Food and water can be contaminated with other bacteria like Salmonella, Coliform, Pseudomonas, etc. Hence, it has become important to rapidly detect and identify infectious bacteria. Colloidal luminescent semiconductor nanocrystals or quantum dots (QDs) have elicited a great deal of interest in the biosensing community due to their unique fluorescent properties. Here ZnS:Mn2+ QDs are synthesised and biofunctionalised with chitosan. They are attached to the anionic cell wall of E. coli bacteria and different properties of this compound system are studied. These nanocrystals may offer cost effective and quicker alternative to detect single bacterium compared to other conventional methods. Several characterization methods are discussed. The particle size calculated is approximately 8 10nm. The blue shift of PL peak has been observed after the bacteria get attached. 76 pp. Englisch. Seller Inventory # 9783847326908
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Quantum Dots for Detection of Harmful Waterborne Bacterial Pathogens
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Book Description Taschenbuch. Condition: Neu. nach der Bestellung gedruckt Neuware - Printed after ordering - Harmful bacteria are the most common cause of food- and waterborne illnesses. Infection often leads to bloody diarrhoea, and occasionally to kidney failure. Several strains of the bacteria Escherichia coli produce a powerful toxin which causes serious illness. Food and water can be contaminated with other bacteria like Salmonella, Coliform, Pseudomonas, etc. Hence, it has become important to rapidly detect and identify infectious bacteria. Colloidal luminescent semiconductor nanocrystals or quantum dots (QDs) have elicited a great deal of interest in the biosensing community due to their unique fluorescent properties. Here ZnS:Mn2+ QDs are synthesised and biofunctionalised with chitosan. They are attached to the anionic cell wall of E. coli bacteria and different properties of this compound system are studied. These nanocrystals may offer cost effective and quicker alternative to detect single bacterium compared to other conventional methods. Several characterization methods are discussed. The particle size calculated is approximately 8 10nm. The blue shift of PL peak has been observed after the bacteria get attached. Seller Inventory # 9783847326908
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Book Description Condition: New. Dieser Artikel ist ein Print on Demand Artikel und wird nach Ihrer Bestellung fuer Sie gedruckt. Autor/Autorin: Mazumder SonalSonal Mazumder is a Research Assistant in Virginia Polytechnic Institute and State University from Blacksburg, Virginia, United States. She did her Chemical Engineering from Heritage Institute of Technology, Kolkata, In. Seller Inventory # 5510288
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