Production of bacterial cellulose with various additives in a PCS rotating disk bioreactor and its material property analysis

Shin Ping Lin, Chi Te Liu, Kai Di Hsu, Yu Ting Hung, Ting Yu Shih, Kuan Chen Cheng

Research output: Contribution to journalArticle

18 Citations (Scopus)

Abstract

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.

Original languageEnglish
Pages (from-to)367-377
Number of pages11
JournalCellulose
Volume23
Issue number1
DOIs
Publication statusPublished - Feb 1 2016
Externally publishedYes

Keywords

  • Bacterial cellulose
  • Gluconacetobacter xylinus
  • Materials property analysis
  • Plastic composite support
  • Rotating disk bioreactor

ASJC Scopus subject areas

  • Polymers and Plastics

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