Edible Fungus Coating Offers Water-Resistant Alternative to Single-Use Plastics in Fiber Packaging

Researchers at the University of Maine have developed a novel water-, oil-, and grease-resistant coating using edible fungus, presenting a sustainable alternative to plastic wraps and paper cup coatings. The fungus-based film, created by combining T. versicolor mycelia with cellulose nanofibrils, can be applied on various substrates such as paper, denim, felt, and wood. It forms a flexible, waterproof barrier suitable for wrapping and lamination under moderate humidity. Key challenges include maintaining sterile conditions during fungal growth and integrating the process into existing roll-to-roll production lines. The technology holds promise to reduce reliance on single-use plastics in fiber-based packaging, with potential for broad industrial adoption following optimization. This bio-based coating addresses environmental concerns by promoting eco-friendly packaging solutions and helping to cut plastic waste pollution.