The improvement of characteristics of biodegradable films made from kefiran–whey protein by nanoparticle incorporation

Zolfi, Mohsen; Khodaiyan, Faramarz; Mousavi, Mohammad; Hashemi, Maryam

doi:10.1016/j.carbpol.2014.03.018

Cited by 106 publications

(67 citation statements)

References 27 publications

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“…Obviously from different studies on biopolymer films reinforced by nanoparticles (Zolfi et al 2014;Echeverría et al 2014;Kanmani and Rhim 2014) significant increment was seen in TS and YM and a significant reduction was seen in EB by addition of nanokaolin.…”

Section: Mechanical Propertiesmentioning

confidence: 94%

Preparation and characterization of bionanocomposite films reinforced with nano kaolin

et al. 2015

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Effects of nano-kaolin incorporation into semolina films on the physical, mechanical, thermal, barrier and antimicrobial properties of the resulting bio-nanocomposite films were investigated. The properties included crystal structure (by X-ray diffraction), mechanical resistance, color, Fourier transform infrared spectra, decomposition temperature, water-vapor permeability (WVP), oxygen permeability (OP), and antimicrobial activity against Staphylococcus aureus and Escherichia coli. Kaolin was incorporated into biofilms at various amounts (1, 2, 3, 4, and 5 %, w/w total solid). All films were plasticized with 50 % (w/w total solid) combination of sorbitol/glycerol at 3:1 ratio. The incorporation of nanokaolin into semolina films decreased OP and WVP. The moisture content and water solubility of the films were found to decrease by nanokaolin reinforcement, and mechanical properties of films were improved by increasing nanokaolin concentration. Tensile strength and Young's modulus increased from 3.41 to 5.44 MPa and from 63.12 to 136.18, respectively, and elongation-at-break decreased. The films did not exhibit UV absorption. In conclusion, nanokaolin incorporation enhanced the barrier and mechanical properties of semolina films, indicating the potential application of these bio-nanocomposites in food-product packaging.

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Section: Mechanical Propertiesmentioning

confidence: 94%

Preparation and characterization of bionanocomposite films reinforced with nano kaolin

et al. 2015

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“…Some of these studies reported either no improvement or decrease in mechanical properties upon addition of these nanoparticles (Sothornvit et al, 2009;Zolfi et al, 2014). With the addition of titania, Zhou et al (2009) andLi et al (2011) reached a maximum strength of 2.38 MPa (41% increment with respect to pure WPI film) and 10.2 MPa (67% increment), respectively.…”

Section: Mechanical Properties Of the Filmsmentioning

confidence: 99%

“…To achieve a homogeneous distribution of the nanoparticles, Kadam et al (2013) coated titania with silica, however, they observed only a slight increase in tensile strength from 1.03 to 1.18 MPa (15% increment). Zolfi et al (2014), Wakai and Almenar (2015) and Azevedo et al (2015) measured maximum tensile strengths of~11 MPa (57% increment with respect to pure WPI film), 2.3 MPa (16% increment) and 5.42 MPa (49% increment), respectively. Zein nanoparticle addition caused much higher improvement (303%) in the maximum strength of the WPI films compared to the TiO 2 or clay loading.…”

Section: Mechanical Properties Of the Filmsmentioning

confidence: 99%

“…Combination of sonication and silica coating contributed to enhancing tensile stress at break and Young modulus values, however, this strategy did not alter the moisture barrier properties and caused 50% reduction in elongation of the films. TiO 2 nanoparticle addition into WPI kefiran blend films slightly improved water vapor barrier but deteriorated the tensile properties of the films (Zolfi et al, 2014). The review of literature studies indicated that although the inorganic nanoparticles added into the WPI matrix improved several film properties, the mechanical and barrier properties remained at insufficient levels.…”

Section: Introductionmentioning

confidence: 99%

“…% unmodified Na þ -montmorillonite into WPI films. In the work of Zolfi, Khodaiyan, Mousavi, and Hashemi (2014) montmorillonite was added into a blend of WPI and kefiran. The tensile strength and Young modulus values increased significantly while elongation at break values and water vapor permeability of the films decreased with the increased clay content.…”

Section: Introductionmentioning

confidence: 99%

See 2 more Smart Citations

Improvement of barrier and mechanical properties of whey protein isolate based food packaging films by incorporation of zein nanoparticles as a novel bionanocomposite

2016

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a b s t r a c tIn this study, whey protein isolate (WPI) based bio-nanocomposite films embedded with zein nanoparticles (ZNP) were prepared by solution casting. Nanoparticles were coated with sodium caseinate to obtain a uniform distribution in the films. The mechanical, water vapor barrier, surface wetting, morphological and viscoelastic properties of the films were investigated. The addition of ZNP significantly improved the water vapor barrier and mechanical properties of the WPI without adversely affecting the elongation of the films. Dynamical mechanical analysis and contact angle measurements revealed that upon addition of the nanoparticles, the fractional free volume and hydrophilicity of the WPI films decreased. Sodium caseinate containing both hydrophilic and hydrophobic groups created an efficient interface between the hydrophobic ZNP and hydrophilic WPI matrix, allowing for a homogeneous distribution of nanoparticles even at very high loading levels as evidenced by the scanning electron microscope (SEM) and atomic force microscopy (AFM) images. The WPI/ZNP nanocomposite films can potentially become effective food packaging materials.

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Nanocomposite and Food Packaging

Altaf

Dar

Khan

et al. 2022

Nanotechnology in Intelligent Food Packaging

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The improvement of characteristics of biodegradable films made from kefiran–whey protein by nanoparticle incorporation

Cited by 106 publications

References 27 publications

Preparation and characterization of bionanocomposite films reinforced with nano kaolin

Preparation and characterization of bionanocomposite films reinforced with nano kaolin

Improvement of barrier and mechanical properties of whey protein isolate based food packaging films by incorporation of zein nanoparticles as a novel bionanocomposite

Nanocomposite and Food Packaging

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