Development and characterization of kefiran - Al2O3 nanocomposite films: Morphological, physical and mechanical properties

Moradi, Zahra; Esmaiili, Mohsen; Almasi, Hadi

doi:10.1016/j.ijbiomac.2018.10.193

Cited by 29 publications

(14 citation statements)

References 28 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…The three-dimensional network generated leads to the strengthening of the network and reduces its solubility [138]. The same trend was observed in kefiran-caboxymethyl cellulose films with CuO NPs [139] and in kefiran films with Al 2 O 3 NPs [127]. Moreover, the type of nanoparticles also plays an important role in the solubility of the film.…”

Section: Effects Of Nanofillers On the Functional Properties Of Bimentioning

confidence: 80%

See 1 more Smart Citation

The Effect of Nanofillers on the Functional Properties of Biopolymer-Based Films: A Review

2019

View full text Add to dashboard Cite

Waste from non-degradable plastics is becoming an increasingly serious problem. Therefore, more and more research focuses on the development of materials with biodegradable properties. Bio-polymers are excellent raw materials for the production of such materials. Bio-based biopolymer films reinforced with nanostructures have become an interesting area of research. Nanocomposite films are a group of materials that mainly consist of bio-based natural (e.g., chitosan, starch) and synthetic (e.g., poly(lactic acid)) polymers and nanofillers (clay, organic, inorganic, or carbon nanostructures), with different properties. The interaction between environmentally friendly biopolymers and nanofillers leads to the improved functionality of nanocomposite materials. Depending on the properties of nanofillers, new or improved properties of nanocomposites can be obtained such as: barrier properties, improved mechanical strength, antimicrobial, and antioxidant properties or thermal stability. This review compiles information about biopolymers used as the matrix for the films with nanofillers as the active agents. Particular emphasis has been placed on the influence of nanofillers on functional properties of biopolymer films and their possible use within the food industry and food packaging systems. The possible applications of those nanocomposite films within other industries (medicine, drug and chemical industry, tissue engineering) is also briefly summarized.

show abstract

Section: Effects Of Nanofillers On the Functional Properties Of Bimentioning

confidence: 80%

“…Tin oxide (SnO 2 ) nanoparticles have electrical, thermal, mechanical and gas barrier properties [124,125]. The addition of non-toxic and neutral Al 2 O 3 NPs to the biopolymer matrix provides a wide range of promising properties due to its small particles, significant surface area, and good activity [126,127].…”

Section: Types Of Biopolymers and Nanofillersmentioning

confidence: 99%

The Effect of Nanofillers on the Functional Properties of Biopolymer-Based Films: A Review

2019

View full text Add to dashboard Cite

show abstract

“…For different sites of each film, three readings were recorded. The average values were used for the calculation of the total color difference ( ΔE) and whiteness index (WI) according to the following equations (Moradi et al., 2019). where L*, a*, and b* represent the color parameter values of a white standard plate (L* = 90.93, a* = 2.22, b* = −4.33) and L, a, and b are the color parameter values of the specimens.…”

Section: Methodsmentioning

confidence: 99%

“…Considerable attempts have been made to introduce a material without environmental effects, targeting at tackling the problems made by plastic wastes. Particular attention has been paid to the replacement of petrochemical-based plastic materials by biopolymer-based materials with competitive properties and low cost (Echeverría et al., 2014; Khazaei et al., 2014; Moradi et al., 2019; Siracusa et al., 2008). Several studies on the packaging material produced from biopolymers of naturally renewable resources confirmed their promising function (Ghanbarzadeh and Almasi, 2011; Sorrentino et al., 2007).…”

Section: Introductionmentioning

confidence: 99%

Morphological and physical properties of kefiran-whey protein isolate bionanocomposite films reinforced with Al₂O₃ nanoparticles

Moradi

2020

Food sci. technol. int.

Self Cite

View full text Add to dashboard Cite

Considering environmental pollution caused by the non-biodegradable polymers used in food packaging, developing and enhancing the properties of biodegradable films seem to be necessary. For this aim, in the present study, kefiran-whey protein isolate bionanocomposite films were prepared and the impact of different concentrations (1, 3 and 5% w/w) of Al2O3 (alumina) nanoparticles on their physical, morphological, thermal and mechanical properties was studied. Based on the obtained results, an increase in the nanoparticles content led to a significant decrease (p < 0.05) in the water vapor permeability, moisture absorption, moisture content, and water solubility. Scanning electron microscope images showed a homogeneous structure, confirming the good dispersion of alumina nanoparticles with smooth surface up to concentration of 3%. In addition, both thermal stability and mechanical properties of the films were improved by the increased concentrations of alumina. The results of X-ray diffraction indicated that the intensity of the crystalline peaks of film increased with the addition of Al2O3 to kefiran-whey protein isolate matrix. By considering all results, the concentration of 3% was proposed as the appropriate concentration of Al2O3 for the nano-reinforcement of kefiran-whey protein isolate bionanocomposites.

show abstract

“…Within the last decade, aluminum (Al)-containing nanomaterials (NMs) have been widely used not only for industrial applications, but also in consumer products, due to their higher reactivity compared to the bulk form [1,2,3,4]. Forms of Al, both in the micro-and the nano-size, are present in food and consumer products [1,5] due to their use as rming, anticaking, neutralizing, emulsifying and texturizing agents, as well as for cooking tools [6], waste water treatment [7,8] and in medical and hygiene products such as toothpaste [9,10,11]. Nevertheless, their potential toxicity has not been fully evaluated, leading to major concerns from consumers and public health agencies [12].…”

Section: Introductionmentioning

confidence: 99%

Genotoxic Impact of Aluminum-containing Nanomaterials in Human Intestinal and Hepatic Cells.

Jalili

Huet

Burel³

et al. 2020

Preprint

View full text Add to dashboard Cite

Background: Exposure of consumers to aluminum-containing nanomaterials (Al NMs) through numerous products is an area of concern for public health agencies since human health risks are not completely elucidated. In addition, the available data on the genotoxicity of Al2O3 and Al0 NMs are inconclusive or rare. In order to provide further information, the present study investigated the in vitro genotoxic potential of Al0 and Al2O3 NMs in intestinal and liver cell models since these tissues represent organs which would be in direct contact or could experience potential accumulation following oral exposure. Methods: Differentiated human intestinal Caco-2 and hepatic HepaRG cells were exposed to Al0 and Al2O3 NMs (0.03 to 80 µg/cm2) and the results were compared with those obtained with the ionic form AlCl3. Several methods, including H2AX labelling, the alkaline comet assay and micronucleus (MN) assays were used. Oxidative stress and oxidative DNA damage were assessed using High Content Analysis (HCA) and the formamidopyrimidine DNA-glycosylase -modified comet assay respectively. Moreover, carcinogenic properties of Al NMs were investigated through the cell transforming assay (CTA) in Bhas 42 cells.Results: The three forms of Al did not induce chromosomal damage when tested in the MN assay. Furthermore, no cell transformation was observed in Bhas 42 cells. However, although no production of oxidative stress was detected in HCA assays, Al2O3 NMs induced oxidative DNA damage in Caco-2 cells in the comet assay following a 24 h treatment. Considerable DNA damage was observed with Al0 NMs in both cell lines in the comet assay, although this was likely due to interference with these NMs. Finally, no genotoxic effects were observed with AlCl3. Conclusion: The slight effects observed with Al NMs are therefore not likely to be related to ion release in the cell media.

show abstract

Development and characterization of kefiran - Al2O3 nanocomposite films: Morphological, physical and mechanical properties

Cited by 29 publications

References 28 publications

The Effect of Nanofillers on the Functional Properties of Biopolymer-Based Films: A Review

The Effect of Nanofillers on the Functional Properties of Biopolymer-Based Films: A Review

Morphological and physical properties of kefiran-whey protein isolate bionanocomposite films reinforced with Al₂O₃ nanoparticles

Genotoxic Impact of Aluminum-containing Nanomaterials in Human Intestinal and Hepatic Cells.

Contact Info

Product

Resources

About

Development and characterization of kefiran - Al2O3 nanocomposite films: Morphological, physical and mechanical properties

Cited by 29 publications

References 28 publications

The Effect of Nanofillers on the Functional Properties of Biopolymer-Based Films: A Review

The Effect of Nanofillers on the Functional Properties of Biopolymer-Based Films: A Review

Morphological and physical properties of kefiran-whey protein isolate bionanocomposite films reinforced with Al2O3 nanoparticles

Genotoxic Impact of Aluminum-containing Nanomaterials in Human Intestinal and Hepatic Cells.

Contact Info

Product

Resources

About

Morphological and physical properties of kefiran-whey protein isolate bionanocomposite films reinforced with Al₂O₃ nanoparticles