A new scientific breakthrough could change the way waterproof materials are manufactured. Researchers at the University of Maine in the United States have developed a natural coating based on mushrooms that allows paper and fabric to be protected against liquids without the need for plastics.
The discovery was published in the journal Langmuir of the American Chemical Society and promises to become a sustainable alternative to single-use plastics, responsible for much of the global pollution.
The coating is obtained from the edible fungus Trametes versicolor, known as “turkey tail.” This organism develops a structure called mycelium, formed by a network of filaments that act as a natural barrier against water and other substances.
To manufacture the material, scientists mixed mycelium with cellulose nanofibrils, tiny fibers obtained from wood that are already used in paper production. The result was a thin, biodegradable and liquid-resistant layer capable of covering different types of surfaces.
How the fungal coating works
The creation process begins with the growth of the mycelium for three days in a warm environment. Then the material is dried to inactivate the fungus and fix the protective layer. This results in a very thin film, similar to a paint, that slightly changes the color of the treated material.
Tests showed that this coating prevents the absorption of water, oils, and solvents, maintaining the integrity of the paper or fabric. Water droplets form spheres on the treated surface, while uncoated materials quickly absorb them.
Additionally, researchers confirmed that the coating can block liquids such as n-heptane, toluene, and castor oil, making it useful in industrial sectors where protection against complex substances is required.
Its application is simple and adapts to different surfaces, opening the door to uses in packaging, textiles, and food products. The entire process uses renewable resources, without toxic chemicals or expensive technologies, making it accessible and ecologically viable.
The environmental cost of plastics
Each year, more than 400 million tons of plastics are produced, much of which ends up in landfills, rivers, and oceans. Only 9% is recycled, while the rest breaks down into microplastics that contaminate water, air, and food.
These residues affect thousands of marine species. Turtles, birds, and fish mistake plastic fragments for food, causing intestinal blockages and mass deaths. In coastal ecosystems, microplastics alter the nutrient cycle and reduce soil fertility.
The impacts also reach human health. Microplastics have been detected in blood, lungs, and breast milk. Their accumulation can cause inflammations, hormonal alterations, and cardiovascular diseases. Furthermore, plastic production contributes to global warming, as it depends on the extraction of fossil fuels.
In this scenario, advances aimed at replacing plastics with biodegradable materials are essential. The coating developed with mushrooms and wood fibers not only prevents pollution but could also easily integrate into existing industrial processes, reducing costs and emissions.
Towards a future without toxic waste
The fungal coating offers a concrete response to one of the most urgent environmental challenges: the global dependence on plastic. Its safe, biodegradable, and adaptable nature makes it a promising tool to reduce the environmental impact of packaging and daily consumer products.
With more research and industrial support, this innovation could mark the beginning of a new generation of sustainable materials inspired by nature, capable of replacing conventional plastics without losing functionality.
The “turkey tail,” a humble forest fungus, could be the key to reversing decades of plastic pollution and moving towards a more planet-friendly production model.
