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
Brought to light – chromobodies reveal changes in endogenous protein concentration in living cells
21.09.2018 | NMI Naturwissenschaftliches und Medizinisches Institut an der Universität Tübingen
A one-way street for salt
21.09.2018 | Julius-Maximilians-Universität Würzburg
The building blocks of matter in our universe were formed in the first 10 microseconds of its existence, according to the currently accepted scientific picture. After the Big Bang about 13.7 billion years ago, matter consisted mainly of quarks and gluons, two types of elementary particles whose interactions are governed by quantum chromodynamics (QCD), the theory of strong interaction. In the early universe, these particles moved (nearly) freely in a quark-gluon plasma.
This is a joint press release of University Muenster and Heidelberg as well as the GSI Helmholtzzentrum für Schwerionenforschung in Darmstadt.
Then, in a phase transition, they combined and formed hadrons, among them the building blocks of atomic nuclei, protons and neutrons. In the current issue of...
Thin-film solar cells made of crystalline silicon are inexpensive and achieve efficiencies of a good 14 percent. However, they could do even better if their shiny surfaces reflected less light. A team led by Prof. Christiane Becker from the Helmholtz-Zentrum Berlin (HZB) has now patented a sophisticated new solution to this problem.
"It is not enough simply to bring more light into the cell," says Christiane Becker. Such surface structures can even ultimately reduce the efficiency by...
A study in the journal Bulletin of Marine Science describes a new, blood-red species of octocoral found in Panama. The species in the genus Thesea was discovered in the threatened low-light reef environment on Hannibal Bank, 60 kilometers off mainland Pacific Panama, by researchers at the Smithsonian Tropical Research Institute in Panama (STRI) and the Centro de Investigación en Ciencias del Mar y Limnología (CIMAR) at the University of Costa Rica.
Scientists established the new species, Thesea dalioi, by comparing its physical traits, such as branch thickness and the bright red colony color, with the...
Scientists have succeeded in observing the first long-distance transfer of information in a magnetic group of materials known as antiferromagnets.
An international team of researchers has mapped Nemo's genome, providing the research community with an invaluable resource to decode the response of fish to...
21.09.2018 | Event News
03.09.2018 | Event News
27.08.2018 | Event News
21.09.2018 | Physics and Astronomy
21.09.2018 | Life Sciences
21.09.2018 | Event News