Production and properties of bacterial cellulose by the strain Komagataeibacter xylinus B-12068
A strain of acetic acid bacteria, Komagataeibacter xylinus B-12068, was studied as a source for bacterial cellulose (BC) production. The effects of cultivation conditions (carbon sources, temperature, and pH) on BC production and properties were studied in surface and submerged cultures. Glucose was found to be the best substrate for BC production among the sugars tested; ethanol concentration of 3% (w/v) enhanced the productivity of BC. Optimization of medium and cultivation conditions ensures a high production of BC on glucose and glycerol, up to 2.4 and 3.3 g/L/day, respectively. C/N elemental analysis, emission spectrometry, SEM, DTA, and X-ray were used to investigate the structure and physical and mechanical properties of the BC produced under different conditions. MTT assay and SEM showed that native cellulose membrane did not cause cytotoxicity upon direct contact with NIH 3T3 mouse fibroblast cells and was highly biocompatible.
KeywordsBacterial cellulose Growth conditions Komagataeibacter xylinus
Surface of the samples was investigated using a scanning electron microscope Hitachi S-5500 in the center of the common use of Krasnoyarsk Scientific Center of Siberian Branch of Russian Academy of Sciences.
This study was funded by the Russian Foundation for Basic Research and Government of Krasnoyarsk Territory (project registration no. 16-43-242024) and the Russian Academy of Sciences (project registration no. 01201351505).
Compliance with ethical standards
Conflict of interest
The authors declare that they have no conflict of interest.
This article does not contain any studies with human participants or animals, performed by any of the authors.
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