A novel active bionanocomposite film incorporating rosemary essential oil and nanoclay into chitosan

Abdollahi, Mehdi; Rezaei, Masoud; Farzi, Gholamali

doi:10.1016/j.jfoodeng.2012.02.012

Cited by 408 publications

(236 citation statements)

References 47 publications

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“…For nanocomposite films incorporated with or without EECH, the absence of characteristic diffraction peak (2θ=7.04°) of Cloisite Na + nanoclay was noticed in their WAXD patterns. This suggested the intercalated/exfoliated structure of obtained nanocomposite films (Abdollahi et al 2012;Gutierrez et al 2012). However, WAXD pattern of NF-0.4 % was different from that of NF-0 % (without EECH addition).…”

Section: Wide Angle X-ray Diffraction (Waxd) Analysismentioning

confidence: 87%

“…The improved barrier properties of the gelatin/ nanocomposite films (NF-0 %) could be attributed to the hindrance caused by nanoclay (Ray and Okamoto 2003;Rhim and Ng 2007). The formation of network induced by the hydrogen bonds between the gelatin chains and phenolics and the exfoliation/intercalation of gelatin molecules into the silicate galleries of nanoclays might lead to the improved water vapour barrier property (Abdollahi et al 2012). OH groups may form hydrogen linkages between phenolic compounds and gelatin chains or Cloisite Na + (Gutierrez et al 2012).…”

Section: Water Vapour Permeability (Wvp)mentioning

confidence: 99%

“…WAXD analysis is a classical method for determining the gallery height (d-spacing distance) in clay particles. During intercalation or exfoliaton, the insertion of polymer into the organoclay galleries forces the platelets apart and increases the d-spacing, resulting in a shift of the diffraction peak to lower angles or even disappeared (Abdollahi et al 2012;Xu et al 2006). Therefore, phenolic compounds in EECH more likely affected intercalated or exfoliated structure as well as the organisation of amorphous gelatin in the film matrix.…”

Section: Wide Angle X-ray Diffraction (Waxd) Analysismentioning

confidence: 99%

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Properties and characteristics of nanocomposite films from tilapia skin gelatin incorporated with ethanolic extract from coconut husk

et al. 2015

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Impacts of ethanolic extract from coconut husk (EECH) at 0-0.4 % (w/w, on protein basis) on properties of films from tilapia skin gelatin and gelatin/Cloisite Na + nanocomposite films were investigated. Young's Modulus, tensile strength and elongation at break of both films decreased with addition of EECH (P<0.05). The lowest water vapour permeability (WVP) was obtained for gelatin film containing 0.05 % EECH (w/w) (P<0.05). Nevertheless, the nanocomposite film showed the lowest WVP when incorporated with 0.4 % EECH (w/w) (P<0.05). Generally, L*-value (lightness) decreased and a*-value (redness) of films increased (P<0.05) with increasing levels of EECH, regardless of nanoclay incorporation. Transparency of both films generally decreased as the level of EECH increased (P<0.05). Intercalated or exfoliated structure of nanocomposite films was revealed by wide angle X-ray diffraction (WAXD) analysis. Based on scanning electron microscopic (SEM) analysis, the rougher surface was found when EECH was added. EECH had varying impact on thermal stability of films as revealed by thermogravimetric (TGA) and differential scanning calorimetric (DSC) analyses. Thus, the incorporation of EECH determined the properties of both gelatin film and nanocomposite film in which the improved water vapour barrier property could be obtained.

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Section: Wide Angle X-ray Diffraction (Waxd) Analysismentioning

confidence: 87%

Section: Water Vapour Permeability (Wvp)mentioning

confidence: 99%

Section: Wide Angle X-ray Diffraction (Waxd) Analysismentioning

confidence: 99%

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Properties and characteristics of nanocomposite films from tilapia skin gelatin incorporated with ethanolic extract from coconut husk

et al. 2015

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“…Los resultados obtenidos de la solubilidad en agua fueron similares a los reportados por OJAGH, et al [22]. Sin embargo, fueron contradictorios cuando fueron comparados con los resultados de ABDOLLAHI, et al [23], los cuales demostraron que la inclusión de aceite esencial de romero en películas de quitosano aumenta su resistencia al agua. La inclusión de los aceites esenciales disminuyó la WVP de las películas de quitosano.…”

Section: Efecto De La Adición De Los Aceites Esenciales En Las Propieunclassified

“…El anterior fenómeno podría ocurrir por la limitación de la disponibilidad de grupos de hidrógeno para formar uniones hidrofílicas con el vapor de agua en contacto con la película. La disminución de la disponibilidad de los grupos de hidrógeno es causada por la formación de puentes de hidrógeno y enlaces covalentes entre el quitosano y los componentes de los EOs [23].…”

Section: Efecto De La Adición De Los Aceites Esenciales En Las Propieunclassified

Efecto del almacenamiento sobre las propiedades físicas de las películas de quitosano con inclusión de aceites esenciales de tomillo y romero

2016

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RESUMENSe estudió el efecto de factores como humedad, temperatura y tiempo de almacenamiento sobre las propiedades físicas de las películas de quitosano con y sin inclusión de aceites. Se incluyeron aceites de tomillo (TEO) y de romero (REO) en proporciones de 0,5:1 y 1:1 v/p (EOs: CH), así como su combinación 50:50 (TEO:REO). Las películas formadas se almacenaron a temperaturas de 5, 20, 33°C y humedades relativas de 60 y 93% durante cuatro semanas. Las condiciones de almacenamiento alteraron las propiedades mecánicas y físicas de las películas, tales como humedad y capacidad de retención de agua debido a la hidrofícidad del polímero, al efecto plastificante de las moléculas de agua y a fenómenos de retrogradación influenciados por la temperatura y el tiempo de almacenamiento.Palabras clave: Quitosano, polímeros, películas modificadas, aditivos alimentarios. _______________________________________________________________________________________ ABSTRACTThe effect of factors of humidity, temperature and time on the physical properties of chitosan films with and without the thyme and rosemary essential oils inclusion was studied. The thyme (TEO) and rosemary (REO) essential oils were included in 0.5:1 and 1:1 v/w (EOs:CH), as well as their combination 50:50 (TEO:REO). The films were stored at temperatures of 5, 20, 33°C and relative humidities of 60 and 93% during four weeks. Storage conditions modify the physical properties of the films due to their hydrophilic behavior, the plasticizing effect of the water molecules and the retrogradation phenomena influenced by storage temperature and time.

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Mechanical Properties of Chitin‐Based Nanocomposites

Thomas¹,

Pothan²,

Thomas³

2013

Biopolymer Nanocomposites

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A novel active bionanocomposite film incorporating rosemary essential oil and nanoclay into chitosan

Cited by 408 publications

References 47 publications

Properties and characteristics of nanocomposite films from tilapia skin gelatin incorporated with ethanolic extract from coconut husk

Properties and characteristics of nanocomposite films from tilapia skin gelatin incorporated with ethanolic extract from coconut husk

Efecto del almacenamiento sobre las propiedades físicas de las películas de quitosano con inclusión de aceites esenciales de tomillo y romero

Mechanical Properties of Chitin‐Based Nanocomposites

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