Bacterial cellulose nanocrystals: impact of the sulfate content on the interaction with xyloglucan

Pirich, Cleverton Luiz; Freitas, Rilton Alves de; Woehl, Marco Aurélio; Picheth, Guilherme Fadel; Petri, Denise Freitas Siqueira; Sierakowski, Maria Rita

doi:10.1007/s10570-015-0626-y

Cited by 36 publications

(33 citation statements)

References 68 publications

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“…The two-step adsorption mechanism of xyloglucan on cellulose was previously proposed by some authors (Pirich et al 2015;Villares et al 2015;Dammak et al 2015). Moreover, Winter et al (Winter et al 2010) showed that the stability of the bacterial cellulose nanocrystal suspension increases above a certain concentration ratio of xyloglucan, which may be due to a change in the dominant molecule conformation on the surface.…”

Section: Adsorption Kineticsmentioning

confidence: 88%

“…This result also confirms that chain-chain interactions as well as xyloglucan reconformation was probably a process that could limit the adsorption kinetics, as was mentioned above. It is also worth noticing that some authors (Pirich et al 2015) compared the Freundlich and Langmuir model when describing the adsorption of xyloglucan on cellulose. However, none of these two models is able to include lateral interactions in the adsorbed layer, which were proposed in the literature (Pirich et al 2015;Dammak et al 2015).…”

Section: Adsorption Equilibriummentioning

confidence: 99%

“…It is also worth noticing that some authors (Pirich et al 2015) compared the Freundlich and Langmuir model when describing the adsorption of xyloglucan on cellulose. However, none of these two models is able to include lateral interactions in the adsorbed layer, which were proposed in the literature (Pirich et al 2015;Dammak et al 2015). Therefore, in future analysis, the FowlerGuggenheim model and its parameters may help in the qualitative and quantitative description of the adsorption of xyloglucan on cellulose.…”

Section: Adsorption Equilibriummentioning

confidence: 99%

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Revision of adsorption models of xyloglucan on microcrystalline cellulose

et al. 2016

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Interactions among cellulose, hemicellulose and pectins are important for plant cell wall assembly and properties and also for industrial applications of these polysaccharides. Therefore, binding of pectin and xyloglucan on microcrystalline cellulose was investigated in this experiment by adsorption isotherms, zeta potential and scanning electron microscopy (SEM). Analysis of three isotherm models (Langmuir, Freundlich and Fowler-Guggenheim isotherms) showed that the experimental adsorption isotherm was well described via the Fowler-Guggenheim model, which includes lateral interaction between the adsorbate. The adsorption isotherm and zeta potential measurement showed that at temperature 25°C only xyloglucan adsorbed on the microcrystalline cellulose. In case of xyloglucan on cellulose, the equilibrium was reached in about 3-4 h, and the kinetics of adsorption were well described by the multiexponential equation. Analysis of the model suggests that two steps can be distinguished: diffusion and reconformation in an adsorbed layer. No adsorption of pectin was observed in this study. SEM study showed that xyloglucan may prevent cellulose from aggregation.

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Section: Adsorption Kineticsmentioning

confidence: 88%

Section: Adsorption Equilibriummentioning

confidence: 99%

Section: Adsorption Equilibriummentioning

confidence: 99%

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Revision of adsorption models of xyloglucan on microcrystalline cellulose

et al. 2016

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“…A larger adsorption of metal ions (Oshima et al, 2008) and proteins (Oshima et al, 2011) onto phosphorylated BC and a greater adsorption of hemoglobin (Niide et al, 2010) onto quaternary ammonium BC was reported in comparison to similarly modified plant-derived cellulose. Sulfate group introduction of up to 0.42% of OSO 3 -groups improved BC interaction with xyloglucan (Pirich et al, 2015). However, all such chemical modifications of BC have a severe drawback: while biocompatibility as well as non-inflammatory and non-toxic properties have been established and widely affirmed for BC , such proofs are missing for the new derivatives, and their biomedical characteristics will have to be tested and confirmed in lengthy and costly procedures.…”

Section: Accepted Manuscriptmentioning

confidence: 99%

Bacterial cellulose as a material for wound treatment: Properties and modifications. A review

Sulaeva

Henniges

Rosenau

et al. 2015

Biotechnology Advances

345

268

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“…The XRD data of BC sample clearly evidenced a typical pattern of cellulose I. BC shows two broad diffraction peaks at 14.29 o and 22.4 o , which could be assigned to cellulose Iα or Iβ phases. Taking into account that BC employed in this study has a higher content of cellulose Iα, the Bragg reflections were indexed as (100) and (110)[22,30,31]. A weak shoulder is observed at 16.47 0 assigned to (010) Iα Bragg reflection.…”

mentioning

confidence: 99%