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.
Åke Hjelm | alfa
Harder 3D-printed tools – Researchers from Dresden introduce new process for hardmetal industry
11.10.2018 | Fraunhofer-Institut für Keramische Technologien und Systeme IKTS
Flying High with VCSEL Heating
04.10.2018 | Fraunhofer-Institut für Lasertechnik ILT
Researchers at the University of New Hampshire have captured a difficult-to-view singular event involving "magnetic reconnection"--the process by which sparse particles and energy around Earth collide producing a quick but mighty explosion--in the Earth's magnetotail, the magnetic environment that trails behind the planet.
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Biochips have been developed at TU Wien (Vienna), on which tissue can be produced and examined. This allows supplying the tissue with different substances in a very controlled way.
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Faster and secure data communication: This is the goal of a new joint project involving physicists from the University of Würzburg. The German Federal Ministry of Education and Research funds the project with 14.8 million euro.
In our digital world data security and secure communication are becoming more and more important. Quantum communication is a promising approach to achieve...
On Saturday, 10 November 2018, the research icebreaker Polarstern will leave its homeport of Bremerhaven, bound for Cape Town, South Africa.
When choosing materials to make something, trade-offs need to be made between a host of properties, such as thickness, stiffness and weight. Depending on the application in question, finding just the right balance is the difference between success and failure
Now, a team of Penn Engineers has demonstrated a new material they call "nanocardboard," an ultrathin equivalent of corrugated paper cardboard. A square...
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16.11.2018 | Life Sciences