期刊
CELLULOSE
卷 23, 期 1, 页码 367-377出版社
SPRINGER
DOI: 10.1007/s10570-015-0855-0
关键词
Gluconacetobacter xylinus; Bacterial cellulose; Plastic composite support; Rotating disk bioreactor; Materials property analysis
资金
- Aim for the Top University Plan of National Taiwan University [103R7764]
- National Science Council, Taiwan [102-2628-B-002-004-MY3]
Previous studies have demonstrated that bacterial cellulose (BC) can be semi-continuously produced by utilizing the plastic composite support-rotating disk bioreactor (PCS-RDB). In this study, different additives, such as microcrystalline cellulose (Avicel was used in this study), carboxymethylcellulose (CMC), agar and sodium alginate, were added to the PCS-RDB culture medium to improve the BC productivity and material properties. The produced BC was then analyzed by Fourier transform infrared spectroscopy (FTIR), scan electron microscopy (SEM), thermogravimetric analysis, X-ray diffraction (XRD) and strength analysis. Adding CMC and Avicel can increase the production of BC in PCS-RDB. The highest BC production reached (0.64 g/slice) when 0.8 % Avicel was added. Data from FTIR, XRD and SEM indicated that CMC and Avicel were incorporated into the BC during production, creating a disordered BC structure and thus reducing crystallinity. Both BCs and additive-altered BCs exhibited similar high water retention abilities (98.6-99 %). Additive-altered BCs exhibit similar strain but lower stress. BC production in PCS-RDB was improved by incorporating different additives, while the material properties of the produced BCs were also modified.
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