Pathogenic EHEC bacteria have recently caused widespread illness in Germany and Europe and this has created huge uncertainty for consumers. The latest reports point the ﬁnger at the seeds of bean shoots as possibly being the source of the EHEC bacteria contamination.
A germ-free seed product from the Fraunhofer FEP sterilization process
© Fraunhofer FEP
The Fraunhofer Institute for Electron Beam and Plasma Technology FEP in Dresden has for some years had a proven technology for effectively rendering pathogens such as bacteria and fungi on seeds harmless.
The process utilizes low-energy electrons to kill germs. The special conﬁguration of the equipment means that the seeds are separated and that the electrons can bombard the seeds from all sides. The electrons only act on and in the seed coat, and the ability of the seeds to germinate and the DNA of the seeds are not adversely affected. A special quality monitoring system safeguards and manages the quality of the seed treatment, ensuring the maximum effect for optimum plant tolerance. As the treatment involves solely a physical process, the harmful organisms cannot develop resistance as can occur when antibiotics are used. In addition, there is no use of chemicals and so the environment and the health of users are not impacted.
In Germany the effectiveness of electron treatment on many types of cereal seeds and against various pathogens (including pseudomonas bacteria) has been demonstrated. Many years of collaborative work with the Julius-Kühn-Institute have conﬁ rmed that the electron treatment of seeds is suitable for different cultivation conditions. Besides the Julius-Kühn-Institute, the European and Mediterranean Plant Protection Organization (EPPO) also recommends the seed sterilization process using electrons for both conventional and organic agriculture. A mobile system for seed treatment using electrons is already available. This has an hourly seed throughput of up to 30 metric tons. Up until now some 4000 to 5000 metric tons of seed per year have been processed in Germany using this technology and subsequently cultivated in conventional and organic agriculture. This has predominantly concerned cereal seeds (wheat, barley, oats), and also seeds from rape, leguminous plants, and vegetables. Frank-Holm Rögner, head of the Electron Beam Processes business unit at the Fraunhofer FEP, stresses: “The electron treatment of seeds is an advanced technology and is already available in Saxony. Expansion of the technology to the sterilization of foods is certainly feasible from a technological point of view.” The treatment of foods with accelerated electrons is currently not permitted in Germany. An ongoing study by the EU has, however, shown that accelerated electrons have no adverse effects on the properties of foods compared to foods sterilized using conventional methods.Scientiﬁc contact:
Annett Arnold | Fraunhofer-Institut
20.11.2017 | Washington University in St. Louis
Carefully crafted light pulses control neuron activity
20.11.2017 | University of Illinois at Urbana-Champaign
The formation of stars in distant galaxies is still largely unexplored. For the first time, astron-omers at the University of Geneva have now been able to closely observe a star system six billion light-years away. In doing so, they are confirming earlier simulations made by the University of Zurich. One special effect is made possible by the multiple reflections of images that run through the cosmos like a snake.
Today, astronomers have a pretty accurate idea of how stars were formed in the recent cosmic past. But do these laws also apply to older galaxies? For around a...
Just because someone is smart and well-motivated doesn't mean he or she can learn the visual skills needed to excel at tasks like matching fingerprints, interpreting medical X-rays, keeping track of aircraft on radar displays or forensic face matching.
That is the implication of a new study which shows for the first time that there is a broad range of differences in people's visual ability and that these...
Computer Tomography (CT) is a standard procedure in hospitals, but so far, the technology has not been suitable for imaging extremely small objects. In PNAS, a team from the Technical University of Munich (TUM) describes a Nano-CT device that creates three-dimensional x-ray images at resolutions up to 100 nanometers. The first test application: Together with colleagues from the University of Kassel and Helmholtz-Zentrum Geesthacht the researchers analyzed the locomotory system of a velvet worm.
During a CT analysis, the object under investigation is x-rayed and a detector measures the respective amount of radiation absorbed from various angles....
The quantum world is fragile; error correction codes are needed to protect the information stored in a quantum object from the deteriorating effects of noise. Quantum physicists in Innsbruck have developed a protocol to pass quantum information between differently encoded building blocks of a future quantum computer, such as processors and memories. Scientists may use this protocol in the future to build a data bus for quantum computers. The researchers have published their work in the journal Nature Communications.
Future quantum computers will be able to solve problems where conventional computers fail today. We are still far away from any large-scale implementation,...
Pillared graphene would transfer heat better if the theoretical material had a few asymmetric junctions that caused wrinkles, according to Rice University...
15.11.2017 | Event News
15.11.2017 | Event News
30.10.2017 | Event News
20.11.2017 | Life Sciences
20.11.2017 | Trade Fair News
20.11.2017 | Earth Sciences