Alongside wind and solar energy, the production of biogas is an important pillar for becoming independent of fossil fuels. With currently around 9,600 biogas plants, Germany is the world's largest producer of biogas. Plant or animal residues are fermented into biogas with the help of anaerobic bacteria. However, the potential of the plants is far from being exhausted.
The fashion industry is responsible for 5% of global CO2 emissions. Water consumption and pollution from dyeing, as well as textile waste after use, also pollute the environment. But the textile industry is changing - not least because customers increasingly value sustainably and fairly produced clothing.
With the ERC Starting Grants, the European Research Council annually funds outstanding research projects by excellent young scientists at the beginning of their careers. The researchers' projects are supported with a total of 1.5 million euros over a period of five years. One of those who was able to acquire the coveted funding is Markus Jeschek from the University of Regensburg. The professor of synthetic microbiology is receiving the funding for the project "Biosensing by Sequence-based Activity Inference" - BiosenSAI for short.
Food packaging is designed to protect food so that it remains edible and reaches the consumer undamaged. Until now, petroleum-based plastics have mostly been used for this purpose. Yet the trend away from fossil raw materials also poses new challenges for the packaging industry. Sustainable alternatives are needed to conserve resources and protect the environment.
A high-load fermenter as a supplement to the established stirred tank fermenter could make biogas plants more economical. This is the conclusion reached by the Bio-Smart project of Münster University of Applied Sciences and the company PlanET Biogastechnik. This is because the high water content of residual materials such as liquid manure not only requires large fermentation tanks in conventional plants, but also a lot of heating energy.
Molds are not only a health risk. They are also important microbial cell factories in biotechnology. The first process of this kind was the fermentation of citric acid more than 100 years ago. In the present, numerous other acids, enzymes and pharmaceutically active molecules have been added. How productive these manufacturing processes are also depends on the spatial structure of the fungal tangles in the bioreactor. A German research team has now succeeded in analyzing these structures.
Microorganisms such as bacteria, yeasts or molds are masters of material conversion and have always been an important tool in biotechnology. With their help, materials can be produced that are naturally biobased and biodegradable - bioplastics, for example. But not all bacteria of interest to biotechnology work as desired, because they are difficult to "tame." Researchers at the Institute of Microbiology and Molecular Biology at Justus Liebig University Giessen (JLU) have now found a way to achieve this by controlling their gene expression.
Photosynthesis is by far the most important metabolic process on earth. Without it, there would be no life. With the help of sunlight, plants, algae and also some bacteria can convert water and carbon dioxide (CO2) into sugar and oxygen. Plants need CO2 to generate the necessary energy and thus biomass for their growth. As a result of increasingly frequent droughts, however, the photosynthetic behavior of plants has changed within the day, as an international study by researchers from South Korea, the USA and Germany shows.
Leaf fleas are a horror for fruit growers. The so-called psyllids sting the plant with their sucking mouthparts and suck out the plant sap. In this way, the parasitic leaf fleas sometimes cause high crop losses. Until now, fruit growers have tried to control the pest with the help of synthetic chemical pesticides. An international team of researchers with the participation of the Julius Kühn Institute (JKI) has now, by chance, found a suitable antagonist in a parasitic fungus to eliminate the leaf flea in fruit growing in a natural way.
It has been seven years since chemists at the University of Konstanz presented a completely new class of plastics that resemble biomaterials in structure. The so-called mineral plastic was a hydrogel consisting of nanoparticles of calcium carbonate (lime) crosslinked with polyacrylic acid in water. Hardly any energy is consumed in its production, as room temperature is sufficient. It also has self-healing properties and is easily recyclable. But the mineral plastic had a crucial flaw: due to its chemical components, it was not biodegradable.