Novel research on nanocellulose production by a marine Bacillus velezensis strain SMR: a comparative study

Bacterial nanocellulose (BNC) is a nanofibrillar polymer that possesses unique characteristics such as high chemical purity, mechanical strength, flexibility, and absorbency. In addition, different bacterial strains can form nanocellulose (NC) in multiple shapes and sizes. This study describes the f...

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Bibliographic Details
Published in:Scientific reports 2020-08, Vol.10 (1), p.14202, Article 14202
Main Authors: Abouelkheir, Samia S., Kamara, Marwa S., Atia, Salma M., Amer, Sara A., Youssef, Marina I., Abdelkawy, Rana S., Khattab, Sherine N., Sabry, Soraya A.
Format: Article
Language:English
Subjects:
631/326
631/61
Algae
Bacillus - metabolism
Biomass
Cellulose - biosynthesis
Cellulose - chemistry
Cellulose - ultrastructure
Comparative studies
Growth media
Humanities and Social Sciences
Hydrogels
Industrial wastes
Mechanical properties
Microscopic analysis
multidisciplinary
Nanofibers - chemistry
Nanofibers - ultrastructure
Polymers
Polyvinyl Alcohol
rRNA 16S
Scanning electron microscopy
Science
Science (multidisciplinary)
Seaweeds
Spectroscopy, Fourier Transform Infrared
Thermogravimetry
Ulva
Waste materials
X-Ray Diffraction
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Summary:Bacterial nanocellulose (BNC) is a nanofibrillar polymer that possesses unique characteristics such as high chemical purity, mechanical strength, flexibility, and absorbency. In addition, different bacterial strains can form nanocellulose (NC) in multiple shapes and sizes. This study describes the first report of a marine Bacillus strain that is able to synthesize NC. The strain identified as B. velezensis SMR based on 16S rDNA sequencing, produced highly structured NC, as confirmed by X-ray diffraction (XRD) and Scanning Electron Microscopic Analysis (SEM). In Hestrin-Schramm (HS) medium, B. velezensis SMR produced twice the quantity of BNC in comparison to the reference strain, G. xylinus ATCC 10245. The ability of B. velezensis SMR to produce NC using different industrial waste materials as growth media was tested. Growth in Ulva seaweed extract supported a 2.5-fold increase of NC production by B. velezensis SMR and a threefold increase in NC production by G. xylinus ATCC 10245. As proof of principle for the usability of NC from B. velezensis SMR, we successfully fabricated a BNC-based polyvinyl alcohol hydrogel (BNC-PVA) system, a promising material used in different fields of application such as medicine, food, and agriculture.
ISSN:2045-2322
2045-2322
DOI:10.1038/s41598-020-70857-7