The Dickeya dadantii biofilm matrix consists of cellulose nanofibers and is an emergent property dependent upon the type III secretion system and the cellulose synthesis operon.
Jahn CE, Selimi DA, Barak JD, Charkowski AO.SourceColorado State University;
Microbiology (Reading, England).Microbiology.2011 Jun 30. [Epub ahead of print]
Dickeya dadantii is a plant pathogenic bacterium that produces cellulose-containing biofilms, called pellicles, at the air-liquid interface of liquid cultures. D. dadantii pellicle formation appears to be an emergent property dependent upon at least three gene clusters, including cellulose synthesis
Pertile RA, Moreira S, Costa RM, Correia A, Guardao L, Gartner F, Vilanova M, Gama M.AbstractThe bacterial cellulose (BC) secreted by Gluconacetobacter xylinus is a network of pure cellulose nanofibres which has high crystallinity, wettability and mechanical strength. These characteristics make BC an excellent material for tissue-engineering constructs, noteworthy for artificial vascular grafts. In this work, the in vivo biocompatibility of BC membranes produced by two G. xylinus strains was analyzed through histological analysis of long-term subcutaneous implants in the mice. The BC implants caused a mild and benign inflammatory reaction that decreased along time and did not elicit a foreign body reaction. A tendency to calcify over time, which may be related to the porosity of the BC implants, was observed, especially among the less porous BC-1 implants. In addition, the potential toxicity of BC nanofibres - obtained by chemical-mechanical treatment of BC membranes - subcutaneously implanted in mice was analysed through bone marrow flow cytometryand histological analyses. At 2 and 4 months post-implantation, the nanofibres implants were found to accumulate intracellularly, in subcutaneous foamy macrophages aggregates. Moreover, no differences were observed between the controls and implanted animals in thymocyte populations and in B lymphocyte precursors and myeloid cells in the bone marrow.
Journal of biomaterials science. Polymer edition.J Biomater Sci Polym Ed.2011 Jun 28. [Epub ahead of print]
The bacterial cellulose (BC) secreted by Gluconacetobacter xylinus is a network of pure cellulose nanofibres which has high crystallinity, wettability and mechanical strength. These characteristics make BC an excellent material for tissue-engineering constructs, noteworthy for artificial vascular gr
Cost-effective production of bacterial cellulose in static cultures using distillery wastewater(BIOCHEMICAL ENGINEERING)
Wu Jyh-Ming,Liu Ren-Han
Journal of bioscience and bioengineering 115(3), 284-290, 2013-03
… Thin stillage (TS), wastewater from rice wine distillery, was used as a cost-free feedstock to replace the costly traditional Hestrin and Schramm (HS) medium for BC production by Gluconacetobacterxylinus. …
… In this review, the author will describe a general introduction of ACC method, and then an example of the ACC method for microbial cellulose pellicle produced by Gluconacetobacterxylinus to provide the characteristic single cellulose nanofibers having a high adsorptivity including alteration of crystalline phases. …