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Investigation of the effect of nanoclay on the properties of quince seed mucilage edible films.

Shekarabi AS, Oromiehie AR, Vaziri A, Ardjmand M, Safekordi AA - Food Sci Nutr (2014)

Bottom Line: In films containing 2% NC, WVP decreased from 6.69 × 10(-7) g·m(-1)·h(-1)·Pa(-1) to 1.10 × 10(-7) g·m(-1)·h(-1)·Pa(-1) and oxygen permeability declined to 13.68 mL·day·m-(2).NC also influences glass transition temperature significantly.The study demonstrated that the properties of quince seed mucilage edible films can be significantly improved using NC as reinforcement.

View Article: PubMed Central - PubMed

Affiliation: Department of Chemical Engineering, Science and Research Branch, Islamic Azad University Tehran, Iran.

ABSTRACT
Some physical properties like Gas barrier, thermal stability, and mechanical properties and brittleness of pure biopolymers film are inadequate for food packaging. The functional properties of quince seed mucilage-based films were enhanced by addition of nanoclay (NC) (Cloisite 30B). Edible films were cast from heated aqueous solutions of quince seed (10% w/w) and NC (0.5%, 1%, 1.5%, and 2% w/w of quince seed). The effect of NC was studied in terms of tensile properties, water vapor permeability (WVP), oxygen permeability, and glass transition temperature (T g) of the nano composite films. In films containing NC, ultimate tensile strength enhanced to 22 MPa, and elongation increased from 2.48% to 6.5%. The addition of NC also improved gas barrier properties of the films. In films containing 2% NC, WVP decreased from 6.69 × 10(-7) g·m(-1)·h(-1)·Pa(-1) to 1.10 × 10(-7) g·m(-1)·h(-1)·Pa(-1) and oxygen permeability declined to 13.68 mL·day·m-(2). NC also influences glass transition temperature significantly. The study demonstrated that the properties of quince seed mucilage edible films can be significantly improved using NC as reinforcement.

No MeSH data available.


Ultimate tensile strength (UTS) of the QSM films as a function of NC (P < 0.05). NC, nanoclay; QSM, mucilage of quince seed.
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fig02: Ultimate tensile strength (UTS) of the QSM films as a function of NC (P < 0.05). NC, nanoclay; QSM, mucilage of quince seed.

Mentions: Tensile strength and percentage of elongation are two significant properties in packaging material. Effect of NC concentration on tensile properties of pure QSM and QSM/clay nanocomposite films was investigated. Figures2, 3 show the relationships between NC content and the tensile properties of the QSM films. Improvement was seen by addition of NC. The results show improvement of mechanical strength with the increase of NC. According to these figures, NC addition of up to 2% increases the mechanical parameters (UTS and %E) for all films compared to the control. In control film, the UTS and elongation were 21.56 MPa and 6.34% and in the composite film with 2% NC there were 31.84 MPa and 2.37%, respectively. The films which did not contain NC had a poor result, In general, the composite film with (2% w/w) NC had higher (P < 0.05) values of this parameter. It seems that the addition of NC improves film strength due to the strong interaction between NC and QSM, resulting from a reduced-free volume and molecular mobility of the polymer (Ghasemlou et al. 2011). This is in agreement with the results reported by Pasbakhsh and coworkers who found that by incorporation of 5 (w/w%) of HNTs, Young's modulus and tensile strength improved by 21% and 34%, respectively (De Silva et al. 2013). They found that the addition of Halloysite NC as an environmentally friendly nanofiller to chitosan biopolymer can increase the applications of this biopolymer, especially when the mechanical properties are concerned (De Silva et al. 2013).


Investigation of the effect of nanoclay on the properties of quince seed mucilage edible films.

Shekarabi AS, Oromiehie AR, Vaziri A, Ardjmand M, Safekordi AA - Food Sci Nutr (2014)

Ultimate tensile strength (UTS) of the QSM films as a function of NC (P < 0.05). NC, nanoclay; QSM, mucilage of quince seed.
© Copyright Policy - open-access
Related In: Results  -  Collection

License
Show All Figures
getmorefigures.php?uid=PMC4256588&req=5

fig02: Ultimate tensile strength (UTS) of the QSM films as a function of NC (P < 0.05). NC, nanoclay; QSM, mucilage of quince seed.
Mentions: Tensile strength and percentage of elongation are two significant properties in packaging material. Effect of NC concentration on tensile properties of pure QSM and QSM/clay nanocomposite films was investigated. Figures2, 3 show the relationships between NC content and the tensile properties of the QSM films. Improvement was seen by addition of NC. The results show improvement of mechanical strength with the increase of NC. According to these figures, NC addition of up to 2% increases the mechanical parameters (UTS and %E) for all films compared to the control. In control film, the UTS and elongation were 21.56 MPa and 6.34% and in the composite film with 2% NC there were 31.84 MPa and 2.37%, respectively. The films which did not contain NC had a poor result, In general, the composite film with (2% w/w) NC had higher (P < 0.05) values of this parameter. It seems that the addition of NC improves film strength due to the strong interaction between NC and QSM, resulting from a reduced-free volume and molecular mobility of the polymer (Ghasemlou et al. 2011). This is in agreement with the results reported by Pasbakhsh and coworkers who found that by incorporation of 5 (w/w%) of HNTs, Young's modulus and tensile strength improved by 21% and 34%, respectively (De Silva et al. 2013). They found that the addition of Halloysite NC as an environmentally friendly nanofiller to chitosan biopolymer can increase the applications of this biopolymer, especially when the mechanical properties are concerned (De Silva et al. 2013).

Bottom Line: In films containing 2% NC, WVP decreased from 6.69 × 10(-7) g·m(-1)·h(-1)·Pa(-1) to 1.10 × 10(-7) g·m(-1)·h(-1)·Pa(-1) and oxygen permeability declined to 13.68 mL·day·m-(2).NC also influences glass transition temperature significantly.The study demonstrated that the properties of quince seed mucilage edible films can be significantly improved using NC as reinforcement.

View Article: PubMed Central - PubMed

Affiliation: Department of Chemical Engineering, Science and Research Branch, Islamic Azad University Tehran, Iran.

ABSTRACT
Some physical properties like Gas barrier, thermal stability, and mechanical properties and brittleness of pure biopolymers film are inadequate for food packaging. The functional properties of quince seed mucilage-based films were enhanced by addition of nanoclay (NC) (Cloisite 30B). Edible films were cast from heated aqueous solutions of quince seed (10% w/w) and NC (0.5%, 1%, 1.5%, and 2% w/w of quince seed). The effect of NC was studied in terms of tensile properties, water vapor permeability (WVP), oxygen permeability, and glass transition temperature (T g) of the nano composite films. In films containing NC, ultimate tensile strength enhanced to 22 MPa, and elongation increased from 2.48% to 6.5%. The addition of NC also improved gas barrier properties of the films. In films containing 2% NC, WVP decreased from 6.69 × 10(-7) g·m(-1)·h(-1)·Pa(-1) to 1.10 × 10(-7) g·m(-1)·h(-1)·Pa(-1) and oxygen permeability declined to 13.68 mL·day·m-(2). NC also influences glass transition temperature significantly. The study demonstrated that the properties of quince seed mucilage edible films can be significantly improved using NC as reinforcement.

No MeSH data available.