期刊
CARBOHYDRATE POLYMERS
卷 266, 期 -, 页码 -出版社
ELSEVIER SCI LTD
DOI: 10.1016/j.carbpol.2021.118176
关键词
Nanocellulose; Acetobacter; 16S rDNA; Raman spectroscopy; NMR
资金
- Reliance Industries Limited
Bacterial nanocellulose production from Acetobacter strains isolated from organic waste and fermented tea was studied, with optimal glycerol concentration found to be 1%. The study showed a maximum productivity of 4.5 g/L of bacterial nanocellulose and an average nitrogen and phosphorus consumption rate of 45 mg/L/day each. Physical properties such as crystallinity and fibril dimensions varied based on the carbon source used.
Bacterial nanocellulose production is gaining popularity owing to its applications in food, cosmetics and medical industry. Three Acetobacter strains isolated from organic waste and fermented tea were identified using 16S rDNA sequencing and their ability to produce nanocellulose was studied. Strain isolated from Kombucha has 99% homology with Komagataeibacter rhaeticus DSM 16663 T. This is the first report where nanocellulose productivity of this strain with different carbon sources such as glucose, glycerol, fructose and sucrose has been studied. 1% glycerol was found to be optimal concentration, with up to 69% of the utilized carbon converted to nanocellulose. Maximum productivity of 4.5 g/L of bacterial nanocellulose was obtained. Average nitrogen and phosphorus consumption rate was 45 mg/L/day each. Physical properties such as crystallinity, fibril dimensions, and glass transition temperature were studied. Bacterial cellulose was 80% crystalline when glycerol and glucose were used as carbon source and 73% for fructose and sucrose. Renewable materials such as bacterial cellulose with their unique properties are the future for applications in the field of cosmetics, composite and wound care.
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