Growing Sustainable Barrier Coatings from Edible Fungal Mycelia

Cellulose nanofibrils (CNFs) have emerged as sustainable alternatives to single-use plastics due to their favorable barrier properties; however, their inherent hydrophilic properties limit their efficacy as water barriers. In this work, we present a novel approach using a CNF matrix and fungal mycel...

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Publié dans:Langmuir : the ACS journal of surfaces and colloids. - 1985. - 41(2025), 39 vom: 07. Okt., Seite 26751-26759
Auteur principal: Zier, Sandro (Auteur)
Autres auteurs: White, Liza R, Johnstone, Dalton, Hoeft, Zechariah, El Hajam, Maryam, Kurtz, Patrick, Wendell, David, Tajvidi, Mehdi, Bousfield, Douglas, Howell, Caitlin
Format: Article en ligne
Langue:English
Publié: 2025
Accès à la collection:Langmuir : the ACS journal of surfaces and colloids
Sujets:Journal Article Cellulose 9004-34-6 Water 059QF0KO0R
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520 |a Cellulose nanofibrils (CNFs) have emerged as sustainable alternatives to single-use plastics due to their favorable barrier properties; however, their inherent hydrophilic properties limit their efficacy as water barriers. In this work, we present a novel approach using a CNF matrix and fungal mycelia to grow coatings directly onto a range of paper and textile substrates to enhance their liquid water resistance via a sustainable, low-energy process. We demonstrate that CNF-based mycelial coatings exhibit a water contact angle (CA) of 139.1° ± 3.5° and a water uptake of 29.6 g m-2 ± 3.5 g m-2 after 3 days of growth, compared to a CA of 27.2° ± 5.0° and a water uptake value of 80.0 g m-2 ± 12.8 g m-2 for a CNF coating alone. Furthermore, the CNF-based coating still retained excellent oil and grease barrier properties (Kit Test of 12), air permeability, and oxygen transmission rates even after at least 3 days of mycelial growth. Comparing CNFs and pulp as a matrix for the coating, we find that CNF facilitates faster growth, a higher maximum CA, and a lower water uptake than pulp. Finally, we demonstrate that both the hyphal structure and surface hydrophobicity are playing a role in water barrier functionality by comparing the grown mycelial coating to a coating of fungal hydrophobic surface proteins─hydrophobins─alone. Collectively, our work demonstrates that growing CNF-based mycelial coatings onto paper or textile substrates offers a potentially scalable solution to create water-resistant barriers on diverse substrates, creating more sustainable alternatives to single-use plastics 
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700 1 |a White, Liza R  |e verfasserin  |4 aut 
700 1 |a Johnstone, Dalton  |e verfasserin  |4 aut 
700 1 |a Hoeft, Zechariah  |e verfasserin  |4 aut 
700 1 |a El Hajam, Maryam  |e verfasserin  |4 aut 
700 1 |a Kurtz, Patrick  |e verfasserin  |4 aut 
700 1 |a Wendell, David  |e verfasserin  |4 aut 
700 1 |a Tajvidi, Mehdi  |e verfasserin  |4 aut 
700 1 |a Bousfield, Douglas  |e verfasserin  |4 aut 
700 1 |a Howell, Caitlin  |e verfasserin  |4 aut 
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