Forum for Science, Industry and Business

Sponsored by:     3M 
Search our Site:


Electronic tongue detects mold


Not only can an electronic tongue monitor the prevalence and growth of microorganisms, it can also sense the difference between various forms of fungi and bacteria. This is shown in a dissertation by Charlotte Söderström submitted at Linköping University. An objective of the project as a whole is to be able to make use of an electronic tongue in the future to monitor whether foodstuffs are fit for human consumption.

Today’s monitoring methods involve taking samples from production and analyzing them in a laboratory. But it can take several days to cultivate mold and bacteria. This can even mean that this food will have reached consumers before the results are available. If an analysis uncovers a problem, it can be difficult to determine exactly what packages need to be pulled. The electronic tongue, on the other hand, can be mounted directly in a production facility, where it can continuously monitor production. It can even withstand the strong detergents used to clean machines.

The instrument consists of four metal electrodes that are inserted into a sample and then charged with electric voltage. The current that arises varies in strength between different samples depending on the content of electro-active substances. Microorganisms alter the content of such substances in the sample, which is registered by the electronic tongue. The metering provides large quantities of data, and, with the aid of special statistical methods, relevant information can be gleaned.

The development of the electronic tongue is still in the research stage. It may be several years before it is available for use in the food industry.

The dissertation is titled: Measuring Microbial Activity with an Electronic Tongue.

The dissertation was publicly defended on May 9, 2003. Charlotte Söderström, Section for Applied Physics, can be reached at phone: +46 13-286614 or +46 13-141716 or at .

Åke Hjelm | alfa
Further information:

More articles from Process Engineering:

nachricht Applying electron beams to 3-D objects
23.09.2016 | Fraunhofer-Institut für Organische Elektronik, Elektronenstrahl- und Plasmatechnik FEP

nachricht New process for cell transfection in high-throughput screening
21.03.2016 | Laser Zentrum Hannover e.V.

All articles from Process Engineering >>>

The most recent press releases about innovation >>>

Die letzten 5 Focus-News des innovations-reports im Überblick:

Im Focus: New 3-D wiring technique brings scalable quantum computers closer to reality

Researchers from the Institute for Quantum Computing (IQC) at the University of Waterloo led the development of a new extensible wiring technique capable of controlling superconducting quantum bits, representing a significant step towards to the realization of a scalable quantum computer.

"The quantum socket is a wiring method that uses three-dimensional wires based on spring-loaded pins to address individual qubits," said Jeremy Béjanin, a PhD...

Im Focus: Scientists develop a semiconductor nanocomposite material that moves in response to light

In a paper in Scientific Reports, a research team at Worcester Polytechnic Institute describes a novel light-activated phenomenon that could become the basis for applications as diverse as microscopic robotic grippers and more efficient solar cells.

A research team at Worcester Polytechnic Institute (WPI) has developed a revolutionary, light-activated semiconductor nanocomposite material that can be used...

Im Focus: Diamonds aren't forever: Sandia, Harvard team create first quantum computer bridge

By forcefully embedding two silicon atoms in a diamond matrix, Sandia researchers have demonstrated for the first time on a single chip all the components needed to create a quantum bridge to link quantum computers together.

"People have already built small quantum computers," says Sandia researcher Ryan Camacho. "Maybe the first useful one won't be a single giant quantum computer...

Im Focus: New Products - Highlights of COMPAMED 2016

COMPAMED has become the leading international marketplace for suppliers of medical manufacturing. The trade fair, which takes place every November and is co-located to MEDICA in Dusseldorf, has been steadily growing over the past years and shows that medical technology remains a rapidly growing market.

In 2016, the joint pavilion by the IVAM Microtechnology Network, the Product Market “High-tech for Medical Devices”, will be located in Hall 8a again and will...

Im Focus: Ultra-thin ferroelectric material for next-generation electronics

'Ferroelectric' materials can switch between different states of electrical polarization in response to an external electric field. This flexibility means they show promise for many applications, for example in electronic devices and computer memory. Current ferroelectric materials are highly valued for their thermal and chemical stability and rapid electro-mechanical responses, but creating a material that is scalable down to the tiny sizes needed for technologies like silicon-based semiconductors (Si-based CMOS) has proven challenging.

Now, Hiroshi Funakubo and co-workers at the Tokyo Institute of Technology, in collaboration with researchers across Japan, have conducted experiments to...

All Focus news of the innovation-report >>>



Event News

#IC2S2: When Social Science meets Computer Science - GESIS will host the IC2S2 conference 2017

14.10.2016 | Event News

Agricultural Trade Developments and Potentials in Central Asia and the South Caucasus

14.10.2016 | Event News

World Health Summit – Day Three: A Call to Action

12.10.2016 | Event News

Latest News

Innovative technique for shaping light could solve bandwidth crunch

20.10.2016 | Physics and Astronomy

Finding the lightest superdeformed triaxial atomic nucleus

20.10.2016 | Physics and Astronomy

NASA's MAVEN mission observes ups and downs of water escape from Mars

20.10.2016 | Physics and Astronomy

More VideoLinks >>>