Production of Bacterial Cellulose Hydrogel and its Evaluation as a Proton Exchange Membrane

Ramírez-Carmona, Margarita; Gálvez-Gómez, María Paula; González-Perez, Lina; Pinedo-Rangel, Valentina; Pineda-Vasquez, Tatiana; Hotza, Dachamir

doi:10.1007/s10924-023-02759-4

Cited by 4 publications

(1 citation statement)

References 59 publications

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“…Additionally, the polysaccharides produced by bacteria can create a surrounding matrix, which can increase how uneven the surfaces are and could possibly separate the cellulose fibers by creating larger spaces between them. The results from a previous study by Ramire-Carmona et al are well supported by electron micrographs and show that these polysaccharides could be the key factor contributing to the increase in KBC pore size with increased fermentation time [ 45 ].…”

Section: Discussionmentioning

confidence: 55%

Nanobacterial Cellulose from Kombucha Fermentation as a Potential Protective Carrier of Lactobacillus plantarum under Simulated Gastrointestinal Tract Conditions

et al. 2023

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Kombucha bacterial cellulose (KBC), a by-product of kombucha fermentation, can be used as a biomaterial for microbial immobilization. In this study, we investigated the properties of KBC produced from green tea kombucha fermentation on days 7, 14, and 30 and its potential as a protective carrier of Lactobacillus plantarum, a representative beneficial bacteria. The highest KBC yield (6.5%) was obtained on day 30. Scanning electron microscopy showed the development and changes in the fibrous structure of the KBC over time. They had crystallinity indices of 90–95%, crystallite sizes of 5.36–5.98 nm, and are identified as type I cellulose according to X-ray diffraction analysis. The 30-day KBC had the highest surface area of 19.91 m2/g, which was measured using the Brunauer–Emmett–Teller method. This was used to immobilize L. plantarum TISTR 541 cells using the adsorption–incubation method, by which 16.20 log CFU/g of immobilized cells was achieved. The amount of immobilized L. plantarum decreased to 7.98 log CFU/g after freeze-drying and to 2.94 log CFU/g after being exposed to simulated gastrointestinal tract conditions (HCl pH 2.0 and 0.3% bile salt), whereas the non-immobilized culture was not detected. This indicated its potential as a protective carrier to deliver beneficial bacteria to the gastrointestinal tract.

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Section: Discussionmentioning

confidence: 55%

Nanobacterial Cellulose from Kombucha Fermentation as a Potential Protective Carrier of Lactobacillus plantarum under Simulated Gastrointestinal Tract Conditions

et al. 2023

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Proton Exchange Membranes from Sulfonated Lignin Nanocomposites for Redox Flow Battery Applications

dos Santos,

McMichael,

Whitbeck

et al. 2024

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Redox flow batteries (RFBs) are increasingly being considered for a wide range of energy storage applications, and such devices rely on proton exchange membranes (PEMs) to function. PEMs are high‐cost, petroleum‐derived polymers that often possess limited durability, variable electrochemical performance, and are linked to discharge of perfluorinated compounds. Alternative PEMs that utilize biobased materials, including lignin and sulfonated lignin (SL), low‐cost byproducts of the wood pulping process, have struggled to balance electrochemical performance with dimensional stability. Herein, SL nanoparticles are demonstrated for use as a nature‐derived, ion‐conducting PEM material. SL nanoparticles (NanoSLs) can be synthesized for increased surface area, uniformity, and miscibility compared with macrosized lignin, improving proton conductivity. After addition of polyvinyl alcohol (PVOH) as a structural backbone, membranes with the highest NanoSL concentration demonstrated an ion exchange capacity of 1.26 meq g−1, above that of the commercial PEM Nafion 112 (0.98 meq g−1), along with a conductivity of 80.4 mS cm−1 in situ, above that of many biocomposite PEMs, and a coulombic efficiency (CE), energy efficiency (EE) and voltage efficiency (VE) of 91%, 68% and 78%, respectively at 20 mA cm−2. These nanocomposite PEMs demonstrate the potential for valorization of forest biomass waste streams for high value clean energy applications.

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Ion-conducting Membranes Based on Bacterial Cellulose Nanofibers Modified by Poly(sodium acrylate-co-2-acrylamido-2-methylpropanesulfonic acid)

Batishcheva,

Smirnov,

Bobrova

et al. 2023

Chin J Polym Sci

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Production of Bacterial Cellulose Hydrogel and its Evaluation as a Proton Exchange Membrane

Cited by 4 publications

References 59 publications

Nanobacterial Cellulose from Kombucha Fermentation as a Potential Protective Carrier of Lactobacillus plantarum under Simulated Gastrointestinal Tract Conditions

Nanobacterial Cellulose from Kombucha Fermentation as a Potential Protective Carrier of Lactobacillus plantarum under Simulated Gastrointestinal Tract Conditions

Proton Exchange Membranes from Sulfonated Lignin Nanocomposites for Redox Flow Battery Applications

Ion-conducting Membranes Based on Bacterial Cellulose Nanofibers Modified by Poly(sodium acrylate-co-2-acrylamido-2-methylpropanesulfonic acid)

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