Detergent

In order to find an alternative to the often aggressive and allergenic detergents, the owner of a commercial cleaning company experimented with various plants. Ultimately, she came across the cleaning power of beetroots, which contain oxalic acid, and developed her own cleaning agent.

PLA plastics suitable for air filters

From offices to classrooms: Air filters have been booming since the outbreak of the pandemic. They can be used to remove virus-laden aerosols from rooms and thus reduce the risk of infection. Ideally, filter materials should also be environmentally friendly. For this reason, researchers from the Zuse community have taken a close look at nonwovens made of bioplastics as filter materials and examined them for filter performance and durability.

More precise spraying thanks to sensor technology

Eliminating competing wild plants while minimizing the impact on the ecosystem: that is the promise of a newly developed sensor for use in crop protection. Arable plants are always in competition with wild plants for sunlight, water and nutrients. To maximize yields, farmers therefore control wild plants, mostly with herbicides. But pesticides impair soil fertility, accumulate in bodies of water and contribute to species extinction.

Spruce trees in a starvation experiment

Surviving is more important than growing: This obvious insight has also been anchored in trees by evolution, as an international research team with the participation of the Max Planck Institute (MPI) for Biogeochemistry now reports in the scientific journal "PNAS". According to the findings, the spruce trees studied prefer to keep their stores filled when resources are scarce, and even stop growing to do so.

Makeup removal wipes

From a functionalized fiber made from naturally occurring starch from green waste and other plants, the Darmstadt-based textile start-up "nakt" produces sustainable reusable makeup removal wipes. These can be reused for months without additional cleaning products to remove makeup, as well as machine washed in between, and are ultimately compostable as well as recyclable.

Molecular memory: Plants' reaction to heat stress

Stress is unhealthy - for both humans and plants. Unlike humans or animals, however, plants cannot avoid stress, e.g., they cannot flee from heat into the shade or into cooler areas. That is why plant cells have a number of adaptation mechanisms. Researchers have now been able to show that the mechanisms in the shoot meristem are particularly effective if the plant has already survived heat.

In duet with legumes

The cultivation of a single crop is common practice in agriculture today, i.e., crops such as wheat or corn are usually grown as pure cultures. However, as monocultures without versatile crop rotation, they are not always environmentally friendly. They use nutrients in a very one-sided way and are more susceptible to pests, which means that fertilisers are not used optimally and pesticides have to be applied regularly. This damages both groundwater and soil, leaving the soil less protected from weather extremes and erosion.

Furniture made from fermentation residues

What remains after harvesting usually ends up in the biogas plant and is used for energy. The resulting fermentation residues are often taken as fertilizer in agriculture because of their high nutrient content. Researchers from the German Institute of Textile and Fiber Research Denkendorf have now shown that the recycling chain for fermentation residues does not have to end in the field, but that they can be further processed in industry as a raw material.