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Kombucha-derived bacterial cellulose from diverse wastes: a prudent leather alternative

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Abstract

This study focuses on the production of kombucha-derived bacterial cellulose (KBC) from different modified kombucha and diverse bio-waste sources using Komagataeibacter xylinus for high potential towards cost-effective industrial scalability. The various nutrient media for the biosynthesis of KBC were formulated with sour whey, apple juice, and brewer’s spent grains. Among the investigated nutrient sources, whey and whey/apple juice/brewer’s spent grains mixture media showed superiority in the production of KBC with final yield dry weight determined as 12.59 and 12.81 g/L, respectively. The obtained KBC membranes were characterized by FTIR, TGA, SEM, and XRD analysis and results showed no significant difference in chemical structure, morphology, and thermal stability. The obtained KBC membranes were then further applied in the fabrication of bio-based composites as prospective leather substitutes. The prepared bio-based composites showed good shape stability and considerable flexibility with an average tensile strength and elastic modulus of ∼1.69 MPa and ∼100 MPa, respectively. It can be inferred from the results in the present study that KBC can be used as a leather substitute in bio-textile fabrication.

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Acknowledgments

This work is supported by the internal grants IGA/CPS/2019/009 and IGA/CPS/2020/005 from Tomas Bata University in Zlin, Czech Republic and by the Ministry of Education, Youth and Sports of the Czech Republic–DKRVO (RP/CPS/2020/005) and NPU Program I (LO1504).

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Contributions

This study conceptualization and methodology was performed by Hau Trung Nguyen. Formal analysis was done by Hau Trung Nguyen, Fahanwi Asabuwa Ngwabebhoh, and Oyunchimeg Zandraa. Investigation and data curation were carried out by Hau Trung Nguyen. Writing-original draft preparation was done by Hau Trung Nguyen. The paper was reviewed and edited by Nabanita Saha, Fahanwi Asabuwa Ngwabebhoh and Petr Saha. The work was supervised Nabanita Saha and funding acquisition was done by Tomas Saha and Petr Saha. All authors have read and agreed to the published version of the manuscript.

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Correspondence to Nabanita Saha.

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The authors declare that there exists no conflict of interest in this study.

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This article does not contain any studies with human participants or animals performed by any of the authors. In this experiment, we did not collect any samples of human and animals.

Informed consent

The nutrient sources of waste whey and brewed spent grains collected from Kromilk A.S and the Brewery Industry, respectively, were used with informed consent and permission from the responsible authorities of the different companies.

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Nguyen, H.T., Saha, N., Ngwabebhoh, F.A. et al. Kombucha-derived bacterial cellulose from diverse wastes: a prudent leather alternative. Cellulose 28, 9335–9353 (2021). https://doi.org/10.1007/s10570-021-04100-5

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  • DOI: https://doi.org/10.1007/s10570-021-04100-5

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