Effect of pretreatment procedure on properties of Kombucha fermented bacterial cellulose membrane

Sederavičiūtė, Florentina; Bekampienė, P.; Domskienė, Jurgita

doi:10.1016/j.polymertesting.2019.105941

Cited by 35 publications

(23 citation statements)

References 19 publications

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“…Bands 3471 cm −1 (free OH groups) and 1742 cm −1 (steric carbonyl elongation) are characteristic in CA spectra ( Meireles, 2007 ). The 3471 cm −1 band, which is in the region representing the free hydroxyl groups (3000–3600 cm −1 ), had the largest increase compared to 30% glycerol (CAFEO30%Glycerol), which may be a consequence of the presence of glycerol OH groups or possible interaction between glycerol and CA (both are hydrophilic compounds) ( Sederavičiūtė et al., 2019 ). Likewise, slight increases in intensities of other bands, such as 2945 cm −1 and 2882 cm −1 (CH elongation), 1369 cm −1 , 1232 cm −1 and 1042 cm −1 (steric carbonyl elongation), before 30% of glycerol, mainly, may be due to chemical interactions between glycerol and polymeric matrix, through hydrogen bonds.…”

Section: Resultsmentioning

confidence: 99%

Functional and antimicrobial properties of cellulose acetate films incorporated with sweet fennel essential oil and plasticizers

Gonçalves

Motta

Ribeiro-Santos

et al. 2020

Current Research in Food Science

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Cellulose acetate (CA) films with sweet fennel essential oil (FEO) were evaluated for possible changes caused by the incorporation of 5, 10, 20 and 30% glycerol. The results show that the incorporation of different concentrations of plasticizer caused an increase in thickness, water vapor transmission rate (WVTR), tensile strength (TS), besides altering the optical properties and demonstrating possible chemical interaction with the CA matrix (Fourier transform infrared (FTIR)). Scanning electron microscopy (SEM) images revealed that the addition of glycerol caused morphological changes on the surface and internal region of all films. As for antimicrobial activity, the FEO was effective for Staphylococcus aureus and Escherichia coli . However, all films evaluated did not show activity in inhibiting these microorganisms. Therefore, it is believed that the FEO may have some incompatibility with the CA matrix, being trapped between the polymer chains. Therefore, the results suggest that the incorporation of glycerol caused changes in the functional properties of all films, although it did not result in measurable antimicrobial effects.

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Section: Resultsmentioning

confidence: 99%

Functional and antimicrobial properties of cellulose acetate films incorporated with sweet fennel essential oil and plasticizers

Gonçalves

Motta

Ribeiro-Santos

et al. 2020

Current Research in Food Science

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“…In order to meet the objectives of climate change and sustainability, the sustainable development goals to 2030, research interest has grown towards the profit of agriculture residues instead of using fibers such as plant fibers or wood fibers. The use of KBC as reinforcement in cellulose-based nanocomposites represents an improvement for sustainability compared to plant or wood fibers because of the pure cellulose content of the KBC that will not require any chemical treatments or produce extra-residue after treatment [ 15 ]. Moreover, its intrinsic structure can achieve one of the milestones in nanocomposites production, the proper dispersion and distribution of the reinforcement along the polymer matrix.…”

Section: Introductionmentioning

confidence: 99%

Bacterial Cellulose Network from Kombucha Fermentation Impregnated with Emulsion-Polymerized Poly(methyl methacrylate) to Form Nanocomposite

et al. 2021

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The use of bio-based residues is one of the key indicators towards sustainable development goals. In this work, bacterial cellulose, a residue from the fermentation of kombucha tea, was tested as a reinforcing nanofiber network in an emulsion-polymerized poly(methyl methacrylate) (PMMA) matrix. The use of the nanofiber network is facilitating the formation of nanocomposites with well-dispersed nanofibers without using organic solvents or expensive methodologies. Moreover, the bacterial cellulose network structure can serve as a template for the emulsion polymerization of PMMA. The morphology, size, crystallinity, water uptake, and mechanical properties of the kombucha bacterial cellulose (KBC) network were studied. The results showed that KBC nanofibril diameters were ranging between 20–40 nm and the KBC was highly crystalline, >90%. The 3D network was lightweight and porous material, having a density of only 0.014 g/cm3. Furthermore, the compressed KBC network had very good mechanical properties, the E-modulus was 8 GPa, and the tensile strength was 172 MPa. The prepared nanocomposites with a KBC concentration of 8 wt.% were translucent with uniform structure confirmed with scanning electron microscopy study, and furthermore, the KBC network was homogeneously impregnated with the PMMA matrix. The mechanical testing of the nanocomposite showed high stiffness compared to the neat PMMA. A simple simulation of the tensile strength was used to understand the limited strain and strength given by the bacterial cellulose network. The excellent properties of the final material demonstrate the capability of a residue of kombucha fermentation as an excellent nanofiber template for use in polymer nanocomposites.

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“…Although this is an interesting property for some sectors, without hydrophobic treatment, it limits the use of this material. According to Sederavičiūtė et al (2019) and Martins et al (2020), due to the hydrophilic nature of BC, the search for stability of the material dimensions is relevant, because during drying the sample can shrink (Martins et al 2020;Sederavičiūtė et al 2019).…”

Section: The Hydrophilicity Properties Of Bacterial Cellulosementioning

confidence: 99%

“…BC is environmentally friendly, safe for the human body and considered a renewable raw material, and one way to obtain it is through the kombucha fermentation process (Domskiene et al 2019). It is a natural, non-woven material, rmly structured, with an appearance that resembles leather (Chan et al 2018;Domskiene et al 2019;Sederavičiūtė et al 2019).…”

Section: Introductionmentioning

confidence: 99%

“…BC was rst reported in 1988 by Brown, who identi ed a structure chemically equivalent to PC, through the growth of an unbranched lm (Costa et al 2019;Römling and Galperin 2015;Sederavičiūtė et al 2019). The most effective sources for the production of BC are Acetobacter xylinum (also called Gluconacetobacter xylinum), Acetobacter hansenii and Acetobacter pasteurianus.…”

Section: Introductionmentioning

confidence: 99%

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Use of bacterial cellulose in the textile industry and the wettability challenge—a review

et al. 2021

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Bacterial cellulose (BC) has been studied as an alternative material in several segments of the food, pharmaceutical, materials and textile industries. The importance of BC is linked to sustainability goals, since it is an easily degradable biomaterial of low toxicity to the environment and is a renewable raw material. For use in the textile area, bacterial cellulose has attracted great interest from researchers, but it presents some challenges, notably hydrophilicity due to its porous structure. This bibliometric review article gathers studies and methods related to minimizing the hydrophilicity of bacterial cellulose in order to expand its applicability in the textile industry. The databases consulted were ScienceDirect, ProQuest and Web of Science, the documents investigated were scienti c articles and the time period investigated was between 2015 and 2021. The discussion is focused on the applicability of BC in the textile industry, highlighting the research needs, especially with regard to reducing wettability.

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Effect of pretreatment procedure on properties of Kombucha fermented bacterial cellulose membrane

Cited by 35 publications

References 19 publications

Functional and antimicrobial properties of cellulose acetate films incorporated with sweet fennel essential oil and plasticizers

Functional and antimicrobial properties of cellulose acetate films incorporated with sweet fennel essential oil and plasticizers

Bacterial Cellulose Network from Kombucha Fermentation Impregnated with Emulsion-Polymerized Poly(methyl methacrylate) to Form Nanocomposite

Use of bacterial cellulose in the textile industry and the wettability challenge—a review

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