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Manufacturing and characterization of bacterial cellulose tubes using two different fermentation techniques

Aase Bodin (Institutionen för kemi- och bioteknik, Molekylär bioteknik) ; Henrik Bäckdahl (Institutionen för kemi- och bioteknik) ; Lena Gustafsson (Institutionen för kemi- och bioteknik, Molekylär bioteknik) ; B. Risberg ; Paul Gatenholm (Institutionen för kemi- och bioteknik, Polymerteknologi)
Modern multidisciplinary applied lmicrobiology; Exploiting microbes and their interactions/Ed A Medez-Vilas p. 619-622. (2006)
[Kapitel]

A modified defined media with 0.6% lactate resulted in high cellulose yield and was therefore used in the tube formation. Two fermentation techniques were compared, A and B, using a modified disc reactor. Scanning Electron Microscopy (SEM) showed that tubes from method A were more homogeneous with denser parts in the network. In contrast, the tubes grown according to method B have denser inner surface and a porous outer surface. Mechanical measurements could not be done on the tubes from method A due to their fragility. However the tubes from method B were measured and showed to be stiffer, stronger, and less extensible when compared with a BC pellicle. This can probably be explained by a slightly higher solid content of the tubes and presumably a more interconnected fibril network as a consequence. The BC tubes manufactured according to fermentation method B results in desired asymmetric structure and mechanical properties and are expected to be used as a scaffold for tissue engineered blood vessels.


Published online 2008



Denna post skapades 2007-02-07. Senast ändrad 2017-10-09.
CPL Pubid: 26371

 

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Institutioner (Chalmers)

Institutionen för kemi- och bioteknik, Molekylär bioteknik (2005-2007)
Institutionen för kemi- och bioteknik (2005-2014)
Institutionen för kemi- och bioteknik, Polymerteknologi (2005-2014)

Ämnesområden

Kemiteknik

Chalmers infrastruktur