Mycelium-based composites created from Pleurotus ostreatus, grown on used coffee grounds (SCG) as the main substrate, are enriched with natural pineapple fibers (NPF). These NPFs are mixed with SCGs in varying proportions (from 10% to 30%) to study their effectiveness in improving the properties of MBCs. Credit: Dr Nattawut Boonyuen, National Center for Genetic Engineering and Biotechnology (BIOTEC)
Researchers have developed a new ecological material, called “mycelium-based composites (MBC)”. Mycelium-based composites (MBCs) are renowned for their unique properties, making them an increasingly popular choice across various industries, particularly for applications where sustainability and environmental impact are key considerations.
The study titled “Manufacturing of composites based on mycelium (oyster mushrooms) derived from used coffee grounds with pineapple fiber reinforcement” was published in Mycology.
One of the most remarkable characteristics of MBCs is their biodegradability. Unlike many synthetic materials, MBCs can be composted at the end of their life cycle, breaking down into harmless natural substances, significantly reducing waste and reducing their environmental footprint.
The MBC production process is inherently sustainable. These composites are derived from renewable resources, as mycelium – the root structure of mushrooms – can be grown on various organic wastes. This approach not only reuses waste, but also ensures that MBC production is environmentally friendly, consuming less energy than traditional plastics and synthetic materials.
In terms of physical properties, MBCs are very versatile. Their strength and density can be customized to suit a range of applications, from lightweight packaging solutions to more robust construction materials. This flexibility is a key advantage, allowing a wide range of uses in different contexts.
In addition, MBCs have excellent natural insulation properties, both thermal and acoustic, making them an attractive option in the construction sector, particularly for insulating panels. Additionally, certain treatments and growing conditions can make these composites flame retardant, thereby improving their safety profile and broadening their applicability in scenarios where fire resistance is crucial.
This innovative study, led by Dr. Nattawut Boonyuen, mycologist from the National Center for Genetic Engineering and Biotechnology (BIOTEC) of the National Science and Technology Development Agency (NSTDA), and Dr. Pitak Laoratanakul from the National Center for Metals Technology and Materials Science (MTEC), also at NSTDA, marks a significant advance in sustainable materials science.
In collaboration with other researchers from King Mongkut University of Technology Thonburi (KMUTT) and King Mongkut Institute of Technology Ladkrabang (KMITL), this innovative research led by Dr. Nattawut Boonyuen resulted in the creation of a new material which fuses the mycelium of oyster mushrooms with the coffee used. and marks a significant advancement in the fields of packaging and construction.
This unique blend, enriched with natural pineapple fibers, represents a substantial advance in the development of sustainable materials. By adjusting the proportion of pineapple fibers incorporated into the composite, its characteristics can be changed, from increased strength to better water resistance. This adaptability allows its application in a wide range of uses, demonstrating its versatility.
The flame-retardant nature of MBCs further highlights their practicality, combining environmental sustainability and safety. This aspect of composites is particularly noteworthy in the field of materials science, where such a combination is rare.
This development is more than just an innovation in environmentally friendly materials; it symbolizes a significant step forward towards a sustainable lifestyle. It illustrates the extraordinary potential that lies in the confluence of natural elements and scientific ingenuity. As we further explore these materials, the use of mushrooms and coffee grounds may well be the harbinger of a broader environmental revolution.
More information:
Chatchai Kohphaisansombat et al, Manufacturing of composites based on mycelium (oyster mushrooms) derived from used coffee grounds with pineapple fiber reinforcement, Mycology (2023). DOI: 10.1080/21501203.2023.2273355
Provided by Tsinghua University Press
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