Enhanced ultrafine nanofibril biosynthesis of bacterial nanocellulose using a low-cost material by the adapted strain of Komagataeibacter xylinus MSKU 12
| Autor: | Kazunobu Matsushita, Kallayanee Naloka, Gunjana Theeragool |
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| Rok vydání: | 2020 |
| Předmět: |
Ammonium sulfate
Sucrose Nanofibers 02 engineering and technology engineering.material Biochemistry Nanocellulose 03 medical and health sciences chemistry.chemical_compound Acetic acid Biosynthesis Structural Biology Food science Cellulose Molecular Biology 030304 developmental biology 0303 health sciences Strain (chemistry) General Medicine 021001 nanoscience & nanotechnology Culture Media chemistry Yield (chemistry) Acetobacteraceae engineering Biopolymer 0210 nano-technology |
| Zdroj: | International Journal of Biological Macromolecules. 150:1113-1120 |
| ISSN: | 0141-8130 |
| DOI: | 10.1016/j.ijbiomac.2019.10.117 |
| Popis: | Bacterial nanocellulose (BNC) is a renewable and biodegradable biopolymer which has currently received considerable attention due to the rapid increase in environmental issues. In this study, a cost-effective strategy for BNC production was successfully improved in the adapted strain, C30, which was obtained from Komagataeibacter xylinus MSKU 12 by a repetitive cultivation in a low-cost coconut water containing acetic acid and ethanol (CW-AE medium) at 37 °C. The adaptive procedure allowed the strain C30 to be adapted to grow and produce BNC with a higher yield in a limiting nutrient CW-AE medium, than that in a standard HS-AE medium. This strain could produce a high yield of BNC (9.69 g/L dry weight) in a low-cost medium, a modified CW-AE medium supplemented with sucrose and ammonium sulfate. Moreover, SEM images showed that BNC pellicle produced by the strain C30 in the modified CW-AE medium exhibited finer nanofibrils with a narrower range of width compared with those of MSKU 12 while no significant differences in their physicochemical characteristics were detected among these BNCs produced. Therefore, this finding demonstrates, not only the potential strain for the cost-effective BNC production at high temperature, but also the superior ultrafine nanofibrils production useful for further applications. |
| Databáze: | OpenAIRE |
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