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Targeting Bacterial Nanocellulose Properties through Tailored Downstream Techniques

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Bacterial nanocellulose (BNC) is a biodegradable polysaccharide with unique properties that make it an attractive material for various industrial applications. This study focuses on the strain Komagataeibacter medellinensis ID13488, a strain with the ability to produce high yields of BNC under acidic growth conditions and a promising candidate to use for industrial production of BNC. A comprehensive investigation into the effects of downstream treatments on the structural and mechanical characteristics of BNC was conducted. When compared to alkaline-treated BNC, autoclave-treated BNC exhibited around 78% superior flexibility in average, while it displayed nearly 40% lower stiffness on average. SEM analysis revealed distinct surface characteristics, indicating differences in cellulose chain compaction. FT-IR spectra demonstrated increased hydrogen bonding with prolonged interaction time with alkaline solutions (NaOH and KOH). A thermal analysis showed enhanced thermal stability in alkaline-treated BNC, withstanding temperatures of nearly 300 °C before commencing degradation, compared to autoclave-treated BNC which starts degradation around 200 °C. These findings provide valuable insights for tailoring BNC properties for specific applications, particularly in industries requiring high purity and specific mechanical characteristics.

Read more here: https://www.mdpi.com/2073-4360/16/5/678


Project title

Eco conversion of lower grade PET and mixed recalcitrant PET plastic waste into high performing biopolymers

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This project has received funding from the European Union’s Horizon Europe EIC Pathfinder programme under grant agreement No 101046758

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The project leading to this application has received funding from the European Union’s Horizon Europe EIC Pathfinder programme under agreement No 101046758

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Views and opinions expressed are of the author(s) only and do not necessarily reflect those of the European Union or European Innovation Council. Neither the European Union nor the granting authority can be held responsible for them.