Ultrastructural, Morphological, and Antifungal Properties of Micro and Nanoparticles of Chitosan Crosslinked with Sodium Tripolyphosphate

Cota-Arriola, Octavio; Cortez-Rocha, Mario Onofre; Ezquerra‐Brauer, Josafat Marina; Lizardi‐Mendoza, Jaime; Burgos‐Hernández, Armando; Robles-Sánchez, Maribel; Plascencia‐Jatomea, Maribel

doi:10.1007/s10924-013-0583-1

Cited by 29 publications

(14 citation statements)

References 28 publications

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“…NaOH is commonly used as the neutralising or gelling agent in bead making, but chitosan-palygorskite beads developed even at high NaOH concentrations (up to 5 M) exhibited irregular shaped larger precipitates. This observation was also reported by other workers [14]. Furthermore, those beads had a high tendency to stick to each other during coalesce and thus was difficult to separate.…”

Section: Optimal Conditions For Preparation Of Chitosan-palygorskite supporting

confidence: 88%

Structural evolution of chitosan–palygorskite composites and removal of aqueous lead by composite beads

Rusmin

Sarkar

Liu

et al. 2015

Applied Surface Science

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a b s t r a c tThis paper investigates the structural evolution of chitosan-palygorskite (CP) composites in relation to variable mass ratios of their individual components. The composite beads' performance in lead (Pb) adsorption from aqueous solution was also examined. The composite beads were prepared through direct dispersion of chitosan and palygorskite at 1:1, 1:2 and 2:1 mass ratios (CP1, CP2 and C2P, respectively). Analyses by Fourier transform Infrared (FTIR) spectroscopy, Brunauer-Emmett-Teller (BET) surface area, X-ray diffraction (XRD) and scanning electron microscopy (SEM) confirmed the dependence of the composites' structural characteristics on their composition mass ratio. The chitosan-palygorskite composite beads exhibited a better Pb adsorption performance than the pristine materials (201.5, 154.5, 147.1, 27.7 and 9.3 mg g −1 for CP1, C2P, CP2, chitosan and palygorskite, respectively). Adsorption of Pb by CP1 and CP2 followed Freundlich isothermal model, while C2P fitted to Langmuir model. Kinetic studies showed that adsorption by all the composites fitted to the pseudo-second order model with pore diffusion also acting as a major rate governing step. The surface properties and specific interaction between chitosan and palygorskite in the composites were the most critical factors that influenced their capabilities in removing toxic metals from water.

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Section: Optimal Conditions For Preparation Of Chitosan-palygorskite supporting

confidence: 88%

Structural evolution of chitosan–palygorskite composites and removal of aqueous lead by composite beads

Rusmin

Sarkar

Liu

et al. 2015

Applied Surface Science

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“…For example, Plascencia-Jatomea et al [47] evaluated chitosan solutions of average molecular weight (3.5 g/L) in the germination of spores of Aspergillus niger, finding anomalies in the membrane and deformation of spores and hyphae. Also, it has been reported that chitosan nanoparticles (5 × 10 −3 g/mL) exhibited antifungal effect on A. parasiticus [48], which was attributed to the increase in the contact area due to the small size of nanoparticles, which can be capable of penetrating into the cell and interact with vital components to the growth of fungus. Furthermore, the mode of action of chitosan can be explained in terms of its cationic nature, which can allow electrostatic interaction with proteins and phospholipids of the plasmatic membrane of the microorganism.…”

Section: Journal Of Nanomaterialsmentioning

confidence: 99%

Enhanced Antifungal Effect of Chitosan/Pepper Tree (Schinus molle) Essential Oil Bionanocomposites on the Viability of Aspergillus parasiticus Spores

Luque-Alcaraz

Cortez-Rocha

Velázquez-Contreras

et al. 2016

Journal of Nanomaterials

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Chitosan nanoparticles (CS) and chitosan/pepper tree (Schinus molle) essential oil (CS-EO) bionanocomposites were synthesized by nanoprecipitation method and the in vitro antifungal activity against Aspergillus parasiticus spores was evaluated. The shape and size were evaluated by scanning electron microscopy (SEM) and dynamic light scattering (DLS). The surface charge was determined by assessing the zeta potential and the inclusion of essential oil in bionanocomposites using Fourier transform infrared spectroscopy (FT-IR). The effect on cell viability of the fungus was evaluated using the XTT technique and morphometric analysis by image processing. SEM and DLS analysis indicated that spherical particles with larger diameters for CS-EO biocomposites were observed. Zeta potential values were higher (+11.1 ± 1.60 mV) for CS nanoparticles. Results suggest a chemical interaction between chitosan and pepper tree essential oil. The highest concentration of CS-EO complex caused a larger (40–50%) decrease in A. parasiticus viability. The inclusion of pepper tree oil in CS nanoparticles is a feasible alternative to obtain antifungal biocomposites, where the activity that each compound presents individually is strengthened.

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“…Besides the size, the morphological characteristics of the chitosan NP play an important role in its functionality, especially concerning the delivery of active compounds and the antibacterial activity [21,22]. The most effective particle shape for bacterial interaction is spherical and small in size, in order to penetrate thought the bacterial membrane and target the internal components of the cell [20].…”

Section: Morphological Aspectsmentioning

confidence: 99%

Synthesis of chitosan polysaccharide nanoparticles for skin grape extract stabilization

Silva

Duarte

Souza

et al. 2020

BJD

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Ultrastructural, Morphological, and Antifungal Properties of Micro and Nanoparticles of Chitosan Crosslinked with Sodium Tripolyphosphate

Cited by 29 publications

References 28 publications

Structural evolution of chitosan–palygorskite composites and removal of aqueous lead by composite beads

Structural evolution of chitosan–palygorskite composites and removal of aqueous lead by composite beads

Enhanced Antifungal Effect of Chitosan/Pepper Tree (Schinus molle) Essential Oil Bionanocomposites on the Viability of Aspergillus parasiticus Spores

Synthesis of chitosan polysaccharide nanoparticles for skin grape extract stabilization

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