Studies on soy protein isolate/polyvinyl alcohol hybrid nanofiber membranes as multi-functional eco-friendly filtration materials

Fang, Qun; Zhu, Ming; Yu, Siruo; Sui, Gang; Yang, Xiaoping

doi:10.1016/j.mseb.2016.08.004

Cited by 63 publications

(26 citation statements)

References 35 publications

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“…These broad peaks are often termed as dehydration peaks and occur due to the evaporation of water molecules bonded to the hydrophilic groups of the polymers or proteins [64]. Because of these peaks wide curve, the peak associated with the denaturation of the soy protein, mainly the 7S (conglycinin) and 11S (glycinin) fractions, that occurs at ≈80 °C was masked [65]. The soybean protein has a molecular weight that varies between 8 and 600 kDa, which can be fractionated into 2S, 7S, 11S, and 15S according to their sedimentation coefficients.…”

Section: Resultsmentioning

confidence: 99%

“…For instance, the soy amino acids could potentially interact with the functional hydroxyl groups of the PVA, and consequently increase the T m of the blend [41]. Moreover, at this temperature other fractions of the protein may experience degradation as well [65]. Because of the hybrid network formed, which limits the movement of the PVA and soybean protein segments, complete decomposition of the soy fibres required another degradation step at ≈276 °C.…”

Section: Resultsmentioning

confidence: 99%

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Multifunctional Chitosan/Gold Nanoparticles Coatings for Biomedical Textiles

et al. 2019

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Gold nanoparticles (AuNPs), chemically synthesized by citrate reduction, were for the first time immobilized onto chitosan-treated soybean knitted fabric via exhaustion method. AuNPs were successfully produced in the form of highly spherical, moderated polydisperse, stable structures. Their average size was estimated at ≈35 nm. Successful immobilization of chitosan and AuNPs were confirmed by alterations in the fabric’s spectrophotometric reflectance spectrum and by detection of nitrogen and gold, non-conjugated C=O stretching vibrations of carbonyl functional groups and residual N-acetyl groups characteristic bands by X-ray photoelectron spectroscopy (XPS) and Fourier-Transform Infrared Spectroscopy (FTIR) analysis. XPS analysis confirms the strong binding of AuNPs on the chitosan matrix. The fabrics’ thermal stability increased with the introduction of both chitosan and AuNPs. Coated fabrics revealed an ultraviolet protection factor (UPF) of +50, which established their effectiveness in ultraviolet (UV) radiation shielding. They were also found to resist up to 5 washing cycles with low loss of immobilized AuNPs. Compared with AuNPs or chitosan alone, the combined functionalized coating on soy fabrics demonstrated an improved antimicrobial effect by reducing Staphylococcus aureus adhesion (99.94%) and Escherichia coli (96.26%). Overall, the engineered fabrics were confirmed as multifunctional, displaying attractive optical properties, UV-light protection and important antimicrobial features, that increase their interest for potential biomedical applications.

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Section: Resultsmentioning

confidence: 99%

Section: Resultsmentioning

confidence: 99%

Multifunctional Chitosan/Gold Nanoparticles Coatings for Biomedical Textiles

et al. 2019

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“…In comparison with other natural biopolymers, soy protein isolate (SPI) derived from plant proteins has been the focus of much research owing to its advantages of low cost, biodegradability, biocompatibility, and easy availability [ 6 , 7 , 8 , 9 ]. These notable advantages make it an ideal material for various applications in packaging materials [ 10 ], filtration membranes [ 11 ], drug delivery systems [ 12 ], and tissue engineering [ 13 ]. However, the natural defects of SPI-based films, such as inferior mechanical properties and moisture sensitivity, limit their practical application.…”

Section: Introductionmentioning

confidence: 99%

Improvement in Functional Properties of Soy Protein Isolate-Based Film by Cellulose Nanocrystal–Graphene Artificial Nacre Nanocomposite

et al. 2017

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A facile, inexpensive, and green approach for the production of stable graphene dispersion was proposed in this study. We fabricated soy protein isolate (SPI)-based nanocomposite films with the combination of 2D negative charged graphene and 1D positive charged polyethyleneimine (PEI)-modified cellulose nanocrystals (CNC) via a layer-by-layer assembly method. The morphologies and surface charges of graphene sheets and CNC segments were characterized by atomic force microscopy and Zeta potential measurements. The hydrogen bonds and multiple interface interactions between the filler and SPI matrix were analyzed by Attenuated Total Reflectance-Fourier Transform Infrared spectra and X-ray diffraction patterns. Scanning electron microscopy demonstrated the cross-linked and laminated structures in the fracture surface of the films. In comparison with the unmodified SPI film, the tensile strength and surface contact angles of the SPI/graphene/PEI-CNC film were significantly improved, by 99.73% and 37.13% respectively. The UV-visible light barrier ability, water resistance, and thermal stability were also obviously enhanced. With these improved functional properties, this novel bio-nanocomposite film showed considerable potential for application for food packaging materials.

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“…Previous literature works have reported on the development of hybrid SPI:PVA electrsopun fibers (Cho et al, 2012;Fang et al, 2016;Zhang et al, 1999). However, the ability of these fibers for β-carotene encapsulation and the use of these fibers as packaging coatings has not been explored.…”

Section: Introductionmentioning

confidence: 99%

Electrospun β-carotene–loaded SPI:PVA fiber mats produced by emulsion-electrospinning as bioactive coatings for food packaging

Bruni

Oliveira

Gómez‐Mascaraque

et al. 2020

Food Packaging and Shelf Life

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In this work, emulsion electrospinning was used to develop an active internal coating for food packaging applications. Specifically, the antioxidant molecule β-carotene, was encapsulated in a mixture of soy protein isolate (SPI) and polyvinyl alcohol (PVA) which was directly electrospun onto a polyhydroxybutyrate-co-valerate (PHB92/PHV8) film. An annealing treatment was applied to improve the adhesion of the electrospun mat onto the packaging film, which contributed to modulate the release of the active compound. Stable SPI:PVA emulsions (with a 50:50 ratio) were developed using soybean oil (SBO) as carrier of the hydrophobic -carotene. The encapsulation efficiency of β-carotene in the electrospun SPI:PVA fibers was 65.0% ± 2.6 %, being 51.4 % ± 0.9 % effectively incorporated into their cores. Finally, the in-vitro release assay of the antioxidant in soybean oil, which simulates fatty foods, demonstrated that the heat treatment (anneling) contributed to a slower and more sustained released of the bioactive compound.

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Studies on soy protein isolate/polyvinyl alcohol hybrid nanofiber membranes as multi-functional eco-friendly filtration materials

Cited by 63 publications

References 35 publications

Multifunctional Chitosan/Gold Nanoparticles Coatings for Biomedical Textiles

Multifunctional Chitosan/Gold Nanoparticles Coatings for Biomedical Textiles

Improvement in Functional Properties of Soy Protein Isolate-Based Film by Cellulose Nanocrystal–Graphene Artificial Nacre Nanocomposite

Electrospun β-carotene–loaded SPI:PVA fiber mats produced by emulsion-electrospinning as bioactive coatings for food packaging

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