Thermal, mechanical and water vapor barrier properties of sodium caseinate films containing antimicrobials and their inhibitory action on Listeria monocytogenes

Kristo, Eleana; Koutsoumanis, Konstantinos; Βiliaderis, Costas G.

doi:10.1016/j.foodhyd.2006.12.003

Cited by 227 publications

(143 citation statements)

References 71 publications

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“…This was due to the strong hygroscopic character of KS (Famá et al 2005;Kristo et al 2008). The moisture-growth effect, however, was not observed for CMC films (p>0.05).…”

Section: And Tsmmentioning

confidence: 99%

“…Numerous trials have been aimed at the invention of an appropriate technology for KS-containing antimicrobial polymer materials. A great deal of research has been dedicated to developing active packages through the use of edible films and coatings (Basch et al 2013;Famá et al 2005;Flores et al 2007;Garcia et al 2012;Kristo et al 2008;Mehyar et al 2014;Ofman et al 2004;Floros 2001, 2003;Pérez et al 2014;Sayanjali et al 2011;Shen et al 2010;Valencia-Chamorro et al 2008). The application of these kinds of materials is one of the innovations of packaging technology aiming to improve the mechanical properties of the food, minimize respiration in fruits and vegetables, limit the movement of moisture and other gases, provide antimicrobial or antioxidant capabilities to the product, enhance the sensory properties, and extend the shelf life of the product.…”

Section: Introductionmentioning

confidence: 99%

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Physicochemical and Antimicrobial Properties of Biopolymer-Candelilla Wax Emulsion Films Containing Potassium Sorbate – A Comparative Study

Kowalczyk

Kordowska‐Wiater

Sołowiej

et al. 2014

Food Bioprocess Technol

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The comparative studies were performed in order to assess the most suitable matrix polymer for potassium sorbate (KS). The preservative (1.0, 2.0, 3.0, 4.0 % w/w) was included into edible films made from different biopolymers: carboxymethyl cellulose (CMC), oxidized potato starch (OPS), soy protein isolate (SPI), gelatin (GEL), sorbitol, candelilla wax, and emulsifier. The incorporation of KS dramatically reduced the toughness of all tested films. The plasticizing action of KS was the weakest in CMC-based films, which exhibited the highest initial stiffness and the lowest stretchability. With the exception of GEL films, KS addition caused an increase in water vapor permeability of the films. Moreover, except for CMC films, increased KS content in the films led to increase in the stickiness, moisture content, and solubility. CMC-based films, regardless of the concentration of KS, had unchanged hygroscopicity and were completely water-soluble. In most cases, KS reduced transmission of light through the films. OPS, SPI, and GEL films, in contrast to CMC-based ones, exhibited sorbitol crystallization; however, the addition of KS successfully overcame this disadvantage.The antimicrobial effectiveness of all tested films increased by increasing the KS concentration. The kind of carrier used affected antimicrobial effectiveness of KS, and SPI films tended to have the weakest antibacterial and antifungal activity, especially at low KS content. The data given here may provide a useful guide in establishing the best compromise between conflicting film property demands. Taken together, our findings suggest that the CMC films could be the best carrier for KS.

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“…This was due to the strong hygroscopic character of KS (Famá et al 2005;Kristo et al 2008). The moisture-growth effect, however, was not observed for CMC films (p>0.05).…”

Section: And Tsmmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Physicochemical and Antimicrobial Properties of Biopolymer-Candelilla Wax Emulsion Films Containing Potassium Sorbate – A Comparative Study

Kowalczyk

Kordowska‐Wiater

Sołowiej

et al. 2014

Food Bioprocess Technol

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“…The ability of plant essential oils to protect foods against pathogenic microorganisms has been reported by several researchers (Rojas-Graü et al, 2006;Kristo et al, 2008). Although many essential oils are classified as Generally Recognized as Safe (GRAS), high concentrations of essential oils are generally needed to achieve effective antimicrobial activity in direct food applications and as such, these concentrations may exceed organoleptically acceptable levels (Viuda-Martos et al, 2008).…”

Section: Introductionmentioning

confidence: 99%

Physical, mechanical and barrier properties of corn starch films incorporated with plant essential oils

Ghasemlou

Aliheidari

Fahmi

et al. 2013

Carbohydrate Polymers

326

149

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Corn starch-based films are inherently brittle and lack the necessary mechanical integrity for conventional packaging. However, the incorporation of additives can potentially improve the mechanical properties and processability of starch films. In this work two essential oils, Zataria multiflora Boiss (ZEO) or Mentha pulegium (MEO) at three levels (1%, 2% and 3% (v/v)), were incorporated into starch films using a solution casting method to improve the mechanical and water vapour permeability (WVP) properties and to impart antimicrobial activity.

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“…Unlike chitosan films, whey protein films do not inherently possess antimicrobial activities but incorporation of antimicrobial agents, such as sorbic acid, paminobenzoic acid (Cagri et al, 2001), and lysozyme have been reported (Kristo et al, 2008). Another potential method of imparting antimicrobial functionality to packaging films is through the utilization of antimicrobial nanoparticles such as titania (TiO 2 ) nanocomposites.…”

Section: Introductionmentioning

confidence: 99%

Preparation and characterization of whey protein isolate films reinforced with porous silica coated titania nanoparticles

Kadam

Thunga

Wang

et al. 2013

Journal of Food Engineering

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Whey protein isolate (WPI) films embedded with TiO2@@SiO2 (porous silica (SiO2) coated titania (TiO2)) nanoparticles for improved mechanical properties were prepared by solution casting. A WPI solution of 1.5 wt% TiO2@@SiO2 nanoparticles was subjected to sonication at amplitudes of 0, 16, 80 and 160 μm prior to casting in order to improve the film forming properties of protein and to obtain a uniform distribution of nanoparticles in the WPI films. The physical and mechanical properties of the films were determined by dynamic mechanical analysis (DMA), thermogravimetric analysis (TGA), and tensile testing. Water vapor permeability (WVP) measurements revealed that the water vapor transmission rates are slightly influenced by sonication conditions and nanoparticle loading. The DMA results showed that, at high sonication levels, addition of nanoparticles prevented protein agglomeration. The thermal stability of the materials revealed the presence of 3-4 degradation stages in oxidizing the protein films. The addition of nanoparticles strengthens the WPI film, as evidenced by tensile stress analysis. Sonication improved nanoparticle distribution in film matrix; such films can potentially become effective packaging materials to enhance food quality and safety. AbstractWhey protein isolate (WPI) films embedded with TiO 2 @@SiO 2 (porous silica (SiO 2 ) coated titania (TiO 2 )) nanoparticles for improved mechanical properties were prepared by solution casting. A WPI solution of 1.5 wt% TiO 2 @@SiO 2 nanoparticles was subjected to sonication at amplitudes of 0, 16, 80 and 160 μm prior to casting in order to improve the film forming properties of protein and to obtain a uniform distribution of nanoparticles in the WPI films. The physical and mechanical properties of the films were determined by dynamic mechanical analysis (DMA), thermogravimetric analysis (TGA), and tensile testing. Water vapor permeability (WVP) measurements revealed that the water vapor transmission rates are slightly influenced by sonication conditions and nanoparticle loading. The DMA results showed that, at high sonication levels, addition of nanoparticles prevented protein agglomeration. The thermal stability of the materials revealed the presence of 3-4 degradation stages in oxidizing the protein films. The addition of nanoparticles strengthens the WPI film, as evidenced by tensile stress analysis. Sonication improved nanoparticle distribution in film matrix; such films can potentially become effective packaging materials to enhance food quality and safety.

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Thermal, mechanical and water vapor barrier properties of sodium caseinate films containing antimicrobials and their inhibitory action on Listeria monocytogenes

Cited by 227 publications

References 71 publications

Physicochemical and Antimicrobial Properties of Biopolymer-Candelilla Wax Emulsion Films Containing Potassium Sorbate – A Comparative Study

Physicochemical and Antimicrobial Properties of Biopolymer-Candelilla Wax Emulsion Films Containing Potassium Sorbate – A Comparative Study

Physical, mechanical and barrier properties of corn starch films incorporated with plant essential oils

Preparation and characterization of whey protein isolate films reinforced with porous silica coated titania nanoparticles

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