Dense and continuous networks of aerial hyphae improve flexibility and shape retention of mycelium composite in the wet state

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Kuribayashi , T , Lankinen , P , Hietala , S & Mikkonen , K S 2021 , ' Dense and continuous networks of aerial hyphae improve flexibility and shape retention of mycelium composite in the wet state ' , Composites Part A: Applied Science and Manufacturing , vol. 152 . https://doi.org/10.1016/j.compositesa.2021.106688

Title: Dense and continuous networks of aerial hyphae improve flexibility and shape retention of mycelium composite in the wet state
Author: Kuribayashi, Tomoko; Lankinen, Pauliina; Hietala, Sami; Mikkonen, Kirsi S.
Contributor: University of Helsinki, Department of Food and Nutrition
University of Helsinki, Department of Microbiology
University of Helsinki, Department of Chemistry
University of Helsinki, Helsinki Institute of Sustainability Science (HELSUS)
Date: 2021
Language: eng
Belongs to series: Composites Part A: Applied Science and Manufacturing
ISSN: 1359-835X
URI: http://hdl.handle.net/10138/335904
Abstract: The mycelium composites composed of fungal mycelium and plant substrate are a practical alternative to petroleum plastic-based foam materials. However, the effects of the physiological traits of fungus on the composites’ microscopic structure and mechanical properties remain poorly understood. Here, we compared two basidiomycetes with distinct mycelium morphology and white-decay modes. Cross-sectional observation revealed that the mycelium composites possess a core/shell structure with the shell formed of dense aerial mycelium and the core of plant particles and spongy aerial mycelium. Dense and continuous mycelium networks provided by Trametes hirsuta strengthen the mechanical properties of the composite compared to the coarse mycelium networks of Pleurotus ostreatus. In particular, the firm mycelial shell skeleton confers high flexibility and shape-retention to the composite in the wet state. This unique characteristic of the mycelium composite indicates its potentials in new industrial applications.
Subject: 11832 Microbiology and virology
11831 Plant biology
116 Chemical sciences
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