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In vitro protein digestibility and mineral accessibility of edible filamentous Fungi cultivated in oat flour
University of Borås, Faculty of Textiles, Engineering and Business.
University of Borås, Faculty of Textiles, Engineering and Business. (Swedish Centre for Resource Recovery)ORCID iD: 0000-0002-6853-9147
University of Borås, Faculty of Textiles, Engineering and Business.
Food and Nutrition Science, Department of Life Sciences, Chalmers University of Technology, 412 96 Gothenburg, Sweden.
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2024 (English)In: NFS Journal, ISSN 2352-3646, Vol. 36, article id 100189Article in journal (Refereed) Published
Sustainable development
According to the author(s), the content of this publication falls within the area of sustainable development.
Abstract [en]

Edible filamentous fungi, a source of mycoprotein, are one of the sustainable alternative protein. This study compares protein digestibility (DH%) and amino acid and mineral accessibility in Rhizopus oligosporus cultivated in oat flour (OatRO) or glucose media (GluRO) by using the INFOGEST in vitro digestion protocol. Fungal total amino acids was higher in GluRO (39.0 ± 1.1 % dw) than OatRO (21.8 ± 1.3 % dw) which was also the case for calcium and magnesium content. After completed gastrointestinal digestion, there were no significant differences between GluRO and OatRO regarding DH% (27.21 ± 10.4 % and 29.4 ± 0.5 %), however, GluRO provided significantly higher amino acid accessibility compared to OatRO (64.3 ± 1.6 % and 55.1 ± 3.1 %). Mineral accessibility of GluRO was for Ca: 37.9 ± 1.8 %, Zn: 9.3 ± 0.4 %, Fe: 38.2 ± 1.9 %, Mg: 66.5 ± 1.4 % and Cu: 24.7 ± 1.3 % and for OatRO; Ca: −40.2 ± 2.4 %, Zn: −4.13 ± 0.15 %, Fe:14.6 ± 1.6 %, Mg: 74.5 ± 3.1 %, and Cu: 55.95 ± 0.8 %. Despite the low phytic acid content, OatRO thus showed antinutrient properties with respect to calcium, and zinc, suggesting that oat-derived fungi had antinutrients other than phytic acid. This study hereby revealed that the cultivation substrate affect amino acid and mineral accessibility of filamentous fungi and calls for deeper evaluations of antinutrients in oat-derived fungi.

 

Place, publisher, year, edition, pages
Elsevier, 2024. Vol. 36, article id 100189
Keywords [en]
Oat, Filamentous fungi, Mineral accessibility, Amino acids, In vitro digestion
National Category
Industrial Biotechnology
Research subject
Resource Recovery
Identifiers
URN: urn:nbn:se:hb:diva-32618DOI: 10.1016/j.nfs.2024.100189ISI: 001295433600011OAI: oai:DiVA.org:hb-32618DiVA, id: diva2:1900857
Funder
Swedish Research Council FormasAvailable from: 2024-09-25 Created: 2024-09-25 Last updated: 2024-11-04Bibliographically approved

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Wang, RickyRousta, NedaMahboubi, AmirTaherzadeh, Mohammad J

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