Navigation Links
New biosensor can detect bacteria instantaneously
Date:9/15/2009

A research group from the Rovira i Virgili University (URV) in Tarragona has developed a biosensor that can immediately detect very low levels of Salmonella typhi, the bacteria that causes typhoid fever. The technique uses carbon nanotubes and synthetic DNA fragments that activate an electric signal when they link up with the pathogen.

"We have developed a new biosensor that can detect extremely low concentrations of bacteria immediately, easily and reliably", F. Xavier Rius, lead author of the study and a professor in the Chemometrics, Qualimetrics and Nanosensors research group in the Analytical Chemistry and Organic Chemistry Department of the URV, tells SINC.

Rius' team, jointly led by Jordi Riu, has come up with a technique that can detect extremely low levels of the bacteria Salmonella typhi, which causes typhoid fever. This new biosensor functions using a method, described this month in the scientific journal Angewandte Chemie International Edition, which involves carbon nanotubes with inbuilt aptamers providing electrochemical readings.

The aptamers are small fragments of artificial DNA or RNA designed to attach themselves specifically to a particular molecule, cell or micro organism, in this case Salmonella. If the bacteria are not present, the aptamers remain on the walls of the carbon nanotubes. However, if they detect bacteria, they become activated and stick to it, and the carbon nanotubes generate an electric signal that is picked up by a simple potentiometer connected to the biosensor.

"The presence of the bacteria sparks a change in the interaction between the aptamers and the nanotubes, which takes place in a few seconds and creates an increase in the voltage of the electrode", says Rius.

Traditional methods for identifying and measuring micro organisms require one or two days' analysis. "This technique means small quantities of micro organisms can be detected simply
'/>"/>

Contact: SINC
info@plataformasinc.es
34-914-251-820
FECYT - Spanish Foundation for Science and Technology
Source:Eurekalert  

Page: 1 2

Related biology technology :

1. Fitting pieces for biosensors
2. ArunA Biomedical Submits Contract Proposal to Further Develop Environmental Biosensor for National Security
3. ArunA Biomedical Awarded Department of Defense Contract to Further Develop Environmental Biosensor for National Security
4. Innovative Biosensors and ProGenTech Partner to Develop a Rapid Diagnostics System
5. U.S. Genomics Awarded $9.1 Million Contract for Development of Advanced Biosensor by the U.S. Department of Homeland Security
6. NASA Nanotechnology-Based Biosensor Helps Detect Biohazards
7. Biosensors Receives CE Mark Approval for Its BioMatrix(R) Drug-Eluting Coronary Stent System
8. Model is first to compare performance of biosensors
9. When proteins, antibodies and other biological molecules kiss, a new kind of biosensor can tell
10. When proteins, antibodies and other biological molecules kiss, a new kind of biosensor can tell
11. Hanson Technologies, Inc. Awarded Patent for its Advanced Food Pathogen Detection System
Post Your Comments:
*Name:
*Comment:
*Email:
Related Image:
New biosensor can detect bacteria instantaneously
(Date:12/24/2014)... NEW YORK , Dec. 23, 2014  NeuroLifeSciences ... of mazindol in children with attention deficit/hyperactivity disorder published ... 2014 . The paper, titled "Pilot ... deficit/hyperactivity disorder" ( Konofal et al, Drug ... 2014 ) shows that mazindol might be an ...
(Date:12/22/2014)... , Dec. 22, 2014 /PRNewswire/ - RepliCel Life ... regenerative medicine company focused on the development of autologous ... out of the University of Calgary in conjunction with ... Carolina, which further validates the company,s ongoing clinical research ... effects of pattern baldness. The paper entitled ...
(Date:12/22/2014)... 2014  ( www.competitivehealth.com ) — Competitive Health is ... review and advocacy service, has signed an agreement to ... discount health services marketplace. 63% of Americans ... they expected to pay. As part of an ongoing ... Savings is pleased to offer medical bill review and ...
(Date:12/22/2014)... Fertility Associates of Memphis has announced a new ... network of more than 20 contributing fertility practices ... access to a national pool of frozen donor ... of Memphis is the only fertility clinic in the ... Dr. William Kutteh , director of Fertility Associates of ...
Breaking Biology Technology:Redefining ADHD: A New Approach & A Shift of Paradigm in ADHD Therapeutics 2Redefining ADHD: A New Approach & A Shift of Paradigm in ADHD Therapeutics 3Newly Released Peer-Reviewed Publication Further Validates RepliCel's Use of Dermal Sheath Cup Cells to Treat Pattern Baldness 2Newly Released Peer-Reviewed Publication Further Validates RepliCel's Use of Dermal Sheath Cup Cells to Treat Pattern Baldness 3Newly Released Peer-Reviewed Publication Further Validates RepliCel's Use of Dermal Sheath Cup Cells to Treat Pattern Baldness 4Newly Released Peer-Reviewed Publication Further Validates RepliCel's Use of Dermal Sheath Cup Cells to Treat Pattern Baldness 5WellCard Savings Announces CoPatient Medical Bill Review Service for Members 2Fertility Associates of Memphis Announces Partnership with Donor Egg Bank USA 2Fertility Associates of Memphis Announces Partnership with Donor Egg Bank USA 3
... Gastrotomy Closure Considered Largest Hurdle in Adoption of Incisionless ... Translumenal Endoscopic Surgery (NOTES), SAN CLEMENTE, Calif., Dec. ... field of Incisionless Surgery, today announced that,its EndoSurgical Operating ... a gastrotomy (an incision in the stomach wall) during,a ...
... Protocol Assessment for Reviroc, AMSTERDAM, December 19 ... completed an End of Phase II meeting for ... Reviroc is under,development for elimination of cancer cells ... end-stage blood cancer patients. The FDA,agreed that the ...
... Inc., (Amex:,ADL), today announced that its subsidiary, Jade ... nutraceutical,diagnostic, consumer healthcare and personal care products, is ... Personal Care Center in Hangzhou,China. The state-of-the-art facility ... flagship JPGreen Health and Personal Care Center., ...
Cached Biology Technology:USGI Medical Demonstrates First System for Gastrotomy Closure in NOTES 2Kiadis Pharma Reports Successful End of Phase II Meeting With FDA for Reviroc 2AMDL's First Full Service JPGreen Health and Personal Care Center Set to Open in Hangzhou, China 2
(Date:12/22/2014)... , Dec. 22, 2014 Research ... has announced the addition of the ... report to their offering. ... insight provides an overview of the global ... aims to control and monitor piracy by ...
(Date:12/19/2014)... DUBLIN , Dec. 18, 2014 Research and ... addition of the "Micro Market Monitor: North America ... http://photos.prnewswire.com/prnh/20130307/600769 ... grow at a CAGR of 3.6% from 2014 to ... in this market, Canada is ...
(Date:12/17/2014)... Research and Markets ( http://www.researchandmarkets.com/research/s6qzt5/samsung_galaxy_s5 ... "Samsung Galaxy S5 - Home Button Synaptics Fingerprint ... http://photos.prnewswire.com/prnh/20130307/600769 ... than the iPhone 5S, Samsung introduces for the ... The Galaxy S5 home button presents ...
Breaking Biology News(10 mins):The Global Watermarking and Fingerprinting Markets 2Micro Market Monitor: North America Perimeter Security Systems Market (Intrusion Detection Sensor, Video Surveillance, Communication/Alarm and Notification, Access Control System) 2Micro Market Monitor: North America Perimeter Security Systems Market (Intrusion Detection Sensor, Video Surveillance, Communication/Alarm and Notification, Access Control System) 3Samsung Galaxy S5 - Home Button Synaptics Fingerprint Sensor Technology Analysis 2
... Pittsburgh of UPMC have identified a potential target ... trachomatis, the most prevalent sexually transmitted bacterial infection ... Toni Darville, MD, chief of the Division of ... strain of Chlamydia that, when investigated in an ...
... artificial heart-valve replacements face several repeat operations as they ... and must be traded for bigger ones. Researchers at ... growing valves created in the lab from a patients ... published September 11, they describe making pulmonary valves through ...
... critical to how successful treatment can be. Therefore, the ... field, where every small step is of great importance. ... Cellular Proteomics, Uppsala University researchers describe a technique that the ... bodys cells and tissues, and our knowledge of the human ...
Cached Biology News:Study by Pittsburgh researchers identifies possible vaccine target for chlamydia 2A step toward tissue-engineered heart structures for children 2
... EZ DNA Methylation Kit uses a simplified ... DNA methylation analysis. The kit is based ... place between cytosine and sodium bisulfite where ... DNA Methylation Kits innovative in-column desulphonation reaction ...
... Chemicon Select Tissue Arrays are intended ... individual tissues were fixed in neutral buffered ... identification and diagnosis was performed by certified ... their paraffin blocks and relocated into a ...
... intended for laboratory research use only. ... buffered formalin and embedded in paraffin. ... certified pathologists. Tissue cores were removed ... a new recipient paraffin block, in an ...
... tissue extracts (liver, kidney, spleen, and heart) and ... It was also tested with microsomal fractions prepared ... simple and reliable method for measuring NDPase activity ... the inorganic phosphate released from NDP by the ...
Biology Products: