4.7 Article

Bioconversion of food waste to biocompatible wet-laid fungal films

Journal

MATERIALS & DESIGN
Volume 216, Issue -, Pages -

Publisher

ELSEVIER SCI LTD
DOI: 10.1016/j.matdes.2022.110534

Keywords

Ultrafine grinding resulted in; Filamentous fungi; Zygomycetes; Wet-laid film; Food waste; Biocompatible; Ultrafine grinding

Funding

  1. Vinnova, Sweden [2018-04093]
  2. Vinnova [2018-04093] Funding Source: Vinnova

Ask authors/readers for more resources

Research investigated the cultivation of fungus on bread waste to produce biodegradable films, with treatments to isolate fungal cell walls resulting in high strength and biocompatible fungal films.
The fungus Rhizopus delemar was grown on bread waste in a submerged cultivation process and wet-laid into films. Alkali or enzyme treatments were used to isolate the fungal cell wall. A heat treatment was also applied to deactivate biological activity of the fungus. Homogenization of fungal biomass was done by an iterative ultrafine grinding process. Finally, the biomass was cast into films by a wet-laid process. Ultrafine grinding resulted in densification of the films. Fungal films showed tensile strengths of up to 18.1 MPa, a Young's modulus of 2.3 GPa and a strain at break of 1.4%. Highest tensile strength was achieved using alkali treatment, with SEM analysis showing a dense and highly organized structure. In contrast, less organized structures were obtained using enzymatic or heat treatments. A cell viability assay and fluorescent staining confirmed the biocompatibility of the films. A promising route for food waste valorization to sustainable fungal wet-laid films was established.

Authors

I am an author on this paper
Click your name to claim this paper and add it to your profile.

Reviews

Primary Rating

4.7
Not enough ratings

Secondary Ratings

Novelty
-
Significance
-
Scientific rigor
-
Rate this paper

Recommended

No Data Available
No Data Available