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Bacterial Cellulose Production from agricultural Residues by two Komagataeibacter sp. Strains
University of Borås, Faculty of Textiles, Engineering and Business. Department of Microbiology, University of Ibadan, Ibadan, Nigeria. (Swedish Centre for Resource Recovery)
Department of Microbiology, University of Ibadan, Ibadan, Nigeria.
Department of Energy and Environment, Göteborg Energi, Gothenburg, Sweden.
University of Borås, Faculty of Textiles, Engineering and Business. (Swedish Centre for Resource Recovery)
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2022 (English)In: Bioengineered, ISSN 2165-5979, E-ISSN 2165-5987, Vol. 13, no 4, p. 10010-10025Article 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]

Agricultural residues are constantly increasing with increased farming processes, and improper disposal is detrimental to the environment. Majority of these waste residues are rich in lignocellulose, which makes them suitable substrate for bacterial fermentation in the production of valueadded products. In this study, bacterial cellulose (BC), a purer and better form of cellulose, was produced by two Komagataeibacter sp. isolated from rotten banana and kombucha drink using corncob (CC) and sugarcane bagasse (SCB) enzymatic hydrolyzate, under different fermentation conditions, that is, static, continuous, and intermittent agitation. The physicochemical and mechanical properties of the BC films were then investigated by Fourier Transformed Infrared Spectroscopy (FTIR), Thermogravimetry analysis, Field Emission Scanning Electron Microscopy (FESEM), and Dynamic mechanical analysis. Agitation gave a higher BC yield, with Komagataeibacter sp. CCUG73629 producing BC from CC with a dry weight of 1.6 g/L and 1.4 g/L under continuous and intermittent agitation, respectively, compared with that of 0.9 g/L in HS medium. While BC yield of dry weight up to 1.2 g/L was obtained from SCB by Komagataeibacter sp. CCUG73630 under continuous agitation compared to that of 0.3 g/L in HS medium. FTIR analysis showed BC bands associated with cellulose I, with high thermal stability. The FE-SEM analysis showed that BC fibers were highly ordered and densely packed. Although the BC produced by both strains showed similar physicochemical and morphological properties, the BC produced by the Komagataeibacter sp. CCUG73630 in CC under intermittent agitation had the best modulus of elasticity, 10.8 GPa and tensile strength, 70.9 MPa. [GRAPHICS]

Place, publisher, year, edition, pages
2022. Vol. 13, no 4, p. 10010-10025
National Category
Biochemistry and Molecular Biology Composite Science and Engineering
Research subject
Resource Recovery
Identifiers
URN: urn:nbn:se:hb:diva-27795DOI: 10.1080/21655979.2022.2062970ISI: 000783506100001Scopus ID: 2-s2.0-85128138635OAI: oai:DiVA.org:hb-27795DiVA, id: diva2:1654688
Available from: 2022-04-28 Created: 2022-04-28 Last updated: 2023-01-18

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Zamani, AkramSárvári Horváth, Ilona

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