Chitosan and sodium alginate nanoparticles synthesis and its application in food preservation

Mohammed, Asmaa E.; Abdalhalim, Laila R.; Atalla, Khaled Mohamed; Mohdaly, Adel Abdelrazek Abdelazim; Ramadan, Mohamed Fawzy; Abdelaliem, Yasser Fathy

doi:10.1007/s12210-023-01154-4

Cited by 5 publications

(3 citation statements)

References 33 publications

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“…1,2 For instance, AcAc, often mixed with water, is used as a solvent in different reactions (e.g., Friedel−Crafts alkylation), 3 in medicine (visual inspection with acetic acid), 4 cervical cancer screening, 5 and also widely used in the food industry. 6 A common goal in all these applications is to define strategies to rationally choose the optimal mixture composition (the mole fraction of AcAc as well as that of possible additional compounds) for a target application. Thus, it is desirable to obtain a precise molecular understanding of the correlations between macroscopic mixing thermodynamic and microscopic structural and solvation properties of AcAc−water mixtures.…”

Section: ■ Introductionmentioning

confidence: 99%

“…Acetic acid (AcAc)–water mixtures are of major interest in science and engineering, e.g., in chemical engineering, environmental science, and biotechnology. , For instance, AcAc, often mixed with water, is used as a solvent in different reactions (e.g., Friedel–Crafts alkylation), in medicine (visual inspection with acetic acid), cervical cancer screening, and also widely used in the food industry . A common goal in all these applications is to define strategies to rationally choose the optimal mixture composition (the mole fraction of AcAc as well as that of possible additional compounds) for a target application.…”

Section: Introductionmentioning

confidence: 99%

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From Local Hydration Motifs in Aqueous Acetic Acid Solutions to Macroscopic Mixing Thermodynamics: A Quantitative Connection from THz-Calorimetry

Bag,

Pezzotti,

Das Mahanta

et al. 2023

J. Phys. Chem. B

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We report the results of THz measurements (30–440 cm–1) of aqueous acetic acid solutions over the full mixing range (X AcAc = 0–1). We recorded spectroscopic observables as a function of the acetic acid concentration in the frequency range of the intermolecular stretch at 150 cm–1 and of the librational modes at 350–440 cm–1. This allowed us to unravel changes in hydrophobic and hydrophilic hydration motifs, respectively. By means of a novel THz-calorimetry approach, we quantitatively correlated these changes in local hydration motifs to excess mixing entropy and enthalpy. We find that ΔH mix is determined by both hydrophobic and hydrophilic solvation contributions. In contrast, ΔS mix is governed by hydrophobic cavity formation. Our results further suggest that acetic acid–water mixtures are systems at the edge of phase separation due to endothermic contributions from both hydrophilic and hydrophobic solvation in a large portion of the miscibility range. Our work establishes a quantitative relationship between the balance of local hydrophobic and hydrophilic solvation motifs and the macroscopic mixing thermodynamic properties.

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Section: ■ Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

From Local Hydration Motifs in Aqueous Acetic Acid Solutions to Macroscopic Mixing Thermodynamics: A Quantitative Connection from THz-Calorimetry

Bag,

Pezzotti,

Das Mahanta

et al. 2023

J. Phys. Chem. B

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“…Sodium alginate is one of these reproducible plants with similar structural units to cellulose. And it is extracted from seaweed mainly applied to food [24] and health care [25,26] and can be produced at low cost using environmentally friendly processes. Its large-scale production has been very mature.…”

Section: Introductionmentioning

confidence: 99%

Hierarchical Porous Carbon Aerogel Derived from Sodium Alginate for High Performance Electrochemical Capacitor Electrode

Li,

Lai,

et al. 2023

Processes

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To improve the performance of electrochemical capacitors, there is a notable focus on carbon materials characterized by a large surface area, reasonable pore size, pore size distribution, appropriate electronic conductivity, and excellent chemical durability. Herein, the hierarchical porous carbon aerogel originating from sodium alginate (SA) with well-defined porosity are proposed. The resultant hierarchical porous carbon aerogel shows a substantial specific surface area of 2050.6 m2 g−1 with macropores, mesopores and micropores confirmed by techniques such as TEM, SEM, BET, etc., resulting from a sequence of aerogel formation-carbonization-activation. By electrochemical measurement, the hierarchical porous carbon aerogel exhibits a specific capacitance of 204 F g−1 at an operating current density of 0.2 A g−1 employing 6 M KOH aqueous solution. The hierarchical carbon aerogel displays outstanding cycling stability with a 96.2% capacity maintenance for 10,000 cycles at an operating current density of 1 A g−1. This study presents a viable method for for preparing hierarchical porous carbon aerogel derived from biopolymer for electrochemical capacitors.

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Outstanding performance of core–shell structured chitosan-sodium alginate decorated ZIF-90 beads for the synchronous purification of Pb and Co from industrial effluents

Zong,

Chen,

Yang

et al. 2024

Separation and Purification Technology

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Chitosan and sodium alginate nanoparticles synthesis and its application in food preservation

Cited by 5 publications

References 33 publications

From Local Hydration Motifs in Aqueous Acetic Acid Solutions to Macroscopic Mixing Thermodynamics: A Quantitative Connection from THz-Calorimetry

From Local Hydration Motifs in Aqueous Acetic Acid Solutions to Macroscopic Mixing Thermodynamics: A Quantitative Connection from THz-Calorimetry

Hierarchical Porous Carbon Aerogel Derived from Sodium Alginate for High Performance Electrochemical Capacitor Electrode

Outstanding performance of core–shell structured chitosan-sodium alginate decorated ZIF-90 beads for the synchronous purification of Pb and Co from industrial effluents

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