Structural and rheological characterization of bacterial cellulose gels obtained from Gluconacetobacter genus

Numata, Yukari; Kono, Hiroyuki; Mori, Akane; Kishimoto, Ryota; Tajima, Kenji

doi:10.1016/j.foodhyd.2019.01.060

Cited by 34 publications

(12 citation statements)

References 40 publications

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“…The results are in agreement with other findings demonstrating that G. hansenii exhibits better growth than other Gluconacetobacter species in glucose-containing media due to its ability to direct its energy towards cell growth instead of polysaccharide production [52,53]. Bacterial growth was observed in all media as expected, since G. hansenii is able to assimilate various sugars [37,47,51]. However, better growth (optical density, OD 600 ) was observed in media with higher carbon concentrations, especially glucose-containing media (Figure 2b).…”

Section: Effect Of Different Carbon Sources On Cellulose Yieldssupporting

confidence: 92%

“…Figure 2 shows the bacterial growth over time. Bacterial growth was observed in all media as expected, since G. hansenii is able to assimilate various sugars [37,47,51]. However, better growth (optical density, OD600) was observed in media with higher carbon concentrations, especially glucose-containing media (Figure 2b).…”

Section: Effect Of Different Carbon Sources On Cellulose Yieldssupporting

confidence: 69%

“…MMT is one of the most widely used medicinal clays and has interesting properties for wound dressing applications, such as wound healing and antimicrobial properties, cleansing, skin protection, blood clotting and hemorrhage control in trauma patients [21,32,33]. As dressing material, MMT has been demonstrated by previous studies to be able to enhance the BC wound healing properties by adding to its antibacterial properties and improving its physical-mechanical and thermal properties [21,32,34,35].Among cellulose producing bacteria, the most effective species are from the Gluconacetobacter genus (also named as Acetobacter) [36,37]. When these species are grown in a laboratory under static conditions, cellulose forms as a swollen membrane in the air-water interface, which increases in thickness if cultivation time increases [37].…”

mentioning

confidence: 99%

“…As dressing material, MMT has been demonstrated by previous studies to be able to enhance the BC wound healing properties by adding to its antibacterial properties and improving its physical-mechanical and thermal properties [21,32,34,35].Among cellulose producing bacteria, the most effective species are from the Gluconacetobacter genus (also named as Acetobacter) [36,37]. When these species are grown in a laboratory under static conditions, cellulose forms as a swollen membrane in the air-water interface, which increases in thickness if cultivation time increases [37]. There are several reports of the use of different media and carbon sources in the literature [38][39][40][41].…”

mentioning

confidence: 99%

“…Among cellulose producing bacteria, the most effective species are from the Gluconacetobacter genus (also named as Acetobacter) [36,37]. When these species are grown in a laboratory under static conditions, cellulose forms as a swollen membrane in the air-water interface, which increases in thickness if cultivation time increases [37]. There are several reports of the use of different media and carbon sources in the literature [38][39][40][41].…”

mentioning

confidence: 99%

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Evaluation of Different Methods for Cultivating Gluconacetobacter hansenii for Bacterial Cellulose and Montmorillonite Biocomposite Production: Wound-Dressing Applications

et al. 2020

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Bacterial cellulose (BC) has received considerable attention due to its unique properties, including an ultrafine network structure with high purity, mechanical strength, inherent biodegradability, biocompatibility, high water-holding capacity and high crystallinity. These properties allow BC to be used in biomedical and industrial applications, such as medical product. This research investigated the production of BC by Gluconacetobacter hansenii ATCC 23769 using different carbon sources (glucose, mannitol, sucrose and xylose) at two different concentrations (25 and 50 g∙L−1). The BC produced was used to develop a biocomposite with montmorillonite (MMT), a clay mineral that possesses interesting characteristics for enhancing BC physical-chemical properties, at 0.5, 1, 2 and 3% concentrations. The resulting biocomposites were characterized in terms of their physical and barrier properties, morphologies, water-uptake capacities, and thermal stabilities. Our results show that bacteria presented higher BC yields in media with higher glucose concentrations (50 g∙L−1) after a 14-day incubation period. Additionally, the incorporation of MMT significantly improved the mechanical and thermal properties of the BC membranes. The degradation temperature of the composites was extended, and a decrease in the water holding capacity (WHC) and an improvement in the water release rate (WRR) were noted. Determining a cost-effective medium for the production of BC and the characterization of the produced composites are extremely important for the biomedical applications of BC, such as in wound dressing materials.

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Section: Effect Of Different Carbon Sources On Cellulose Yieldssupporting

confidence: 92%

Section: Effect Of Different Carbon Sources On Cellulose Yieldssupporting

confidence: 69%

mentioning

confidence: 99%

mentioning

confidence: 99%

mentioning

confidence: 99%

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Evaluation of Different Methods for Cultivating Gluconacetobacter hansenii for Bacterial Cellulose and Montmorillonite Biocomposite Production: Wound-Dressing Applications

et al. 2020

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Effect of Culture Conditions on Cellulose Production by a Komagataeibacter xylinus Strain

Zhang

Chen

Yang

et al. 2022

Macromolecular Bioscience

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Bacterial cellulose (BC) is an abundant biopolymer with a wide range of potential industrial applications. However, the industrial application of BC has been hampered by inefficient production. This study aims to investigate the influence of a spontaneous mutation that results in decreased cellulose production by a Komagataeibacter xylinus strain. The yields of cellulose are significantly different under different culture conditions, which imply that the shearing force is responsible for the selection of spontaneous mutants. Fermenter culture conditions under shake‐flask culture conditions are further simulated. The shearing force activates the conversion of microbial cells to Cel− mutants, and the accumulation of water‐soluble exopolysaccharides is observed. The Cel+ cells under agitated culture are not easily converted into Cel− mutants upon the addition of water‐soluble exopolysaccharides synthesized by K. xylinus and a viscous polysaccharide, such as xanthan gum. The conversion ratio of Cel+ cells to Cel− mutants is strongly related to the shearing force and viscosity of the fermentation broth. The synthetic pathways of bacterial cellulose and water‐soluble polysaccharides are independent of each other at the genetic level. However, a substrate competitive relationship between these two polysaccharides is found, which is significant in terms of the optimization of cellulose production in commercial processes.

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Whey: A Potential Source of Bacterial Cellulose and Xanthan Gum

Rao,

Goswami,

Sharma

et al. 2023

Whey Valorization

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Structural and rheological characterization of bacterial cellulose gels obtained from Gluconacetobacter genus

Cited by 34 publications

References 40 publications

Evaluation of Different Methods for Cultivating Gluconacetobacter hansenii for Bacterial Cellulose and Montmorillonite Biocomposite Production: Wound-Dressing Applications

Evaluation of Different Methods for Cultivating Gluconacetobacter hansenii for Bacterial Cellulose and Montmorillonite Biocomposite Production: Wound-Dressing Applications

Effect of Culture Conditions on Cellulose Production by a Komagataeibacter xylinus Strain

Whey: A Potential Source of Bacterial Cellulose and Xanthan Gum

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