News tagged with biosensor
A biosensor is a device for the detection of an analyte that combines a biological component with a physicochemical detector component.
It consists of 3 parts:
The most widespread example of a commercial biosensor is the blood glucose biosensor, which uses the enzyme glucose oxidase to break blood glucose down. In doing so it first oxidizes glucose and uses two electrons to reduce the FAD (a component of the enzyme) to FADH2. This in turn is oxidized by the electrode (accepting two electrons from the electrode) in a number of steps. The resulting current is a measure of the concentration of glucose. In this case, the electrode is the transducer and the enzyme is the biologically active component.
Recently, arrays of many different detector molecules have been applied in so called electronic nose devices, where the pattern of response from the detectors is used to fingerprint a substance. Current commercial electronic noses, however, do not use biological elements.
A canary in a cage, as used by miners to warn of gas could be considered a biosensor. Many of today's biosensor applications are similar, in that they use organisms which respond to toxic substances at a much lower level than us to warn us of their presence. Such devices can be used in environmental monitoring, trace gas detection and in water treatment facilities.
This text uses material from Wikipedia and is available under the GNU Free Documentation License.
(Medical Xpress)—CSIRO scientists, in collaboration with researchers at the Bio21 Institute at the University of Melbourne, have developed a new method which could pave the way for a portable Hendra virus ...
Diseases, Conditions, Syndromes Sep 20, 2012 | not rated yet | 0
Pricking a finger everyday is just part of everyday life for many diabetes patients. A non-invasive measurement approach could release them from the constant pain of pin pricks. The linchpin is a biosensor ...
Diseases, Conditions, Syndromes Sep 04, 2012 | 5 / 5 (1) | 1
Breezing, a new startup based on technology developed by researchers at Arizona State University, is offering the world's first portable device that can track an individual's metabolism and use that information t ...
Medical research Jan 25, 2013 | 4 / 5 (3) | 0
A pioneering mobile device using cutting-edge nanotechnology to rapidly detect malaria infection and drug resistance will be ready for field testing this year, one year ahead of schedule.
Diseases, Conditions, Syndromes Apr 26, 2013 | not rated yet | 0
A closer look at personalized or point-of-care healthcare was the focus of a recent international conference in India organized and chaired by NJIT Distinguished Professor Atam Dhawan. The IEEE Engineering in Medicine and ...
Health Feb 06, 2013 | not rated yet | 0
A*STAR's Institute of Microelectronics and SFC Fluidics, a USA microfluidics-based biomedical device development company, will be collaborating to develop a portable diagnostic tool for rapid triaging of traumatic brain injury ...
Medical research Nov 28, 2012 | not rated yet | 0