Production and Evaluation of Properties of Edible Starch Film Containing Bene (Pistacia atlantica) Gum Essential Oil
2017
Marzieh Panahi | Hassan Barzegar | Mohammad Hojjati
<em>Pistacia atlantica</em> is the dominant species of Pistachio in Iran. Mastic Gum is a resinous gum, which is called Saghghez in Iran. Firstly, the essential oil (EO) of <em>Pistacia atlantica</em> gum was extracted by hydrodistillation method, then the starch film containing <em>Pistacia atlantica</em> essential oil at 0, 0.5, 1 and 2% (V/V) were prepared applying casting method and their physicochemical, mechanical, permeability properties were evaluated.The results showed that the incorporation of EO caused a significant increase (<em>P</em><0.05) in thickness of films and also caused a significant decrease in solubility in water and tensile strength (TS) of films, although no significant decrease was observed in elongation at break (E). Color of the films were also significantly affected by essential oil and total color difference (ΔE) significantly decreased. Despite the fact that water vapor permeability (WVP) of films containing EO increased in comparison with the control film, the increase was not significant at different levels of the EO (<em>P</em><0.05). In the films containing EOs, increasing the concentration of essential oils did not cause a significant effect on oxygen permeability. To study the microstructure of the films, further analysis was provided by the scanning electron microscope (SEM), the results of this test indicate the production of uniform and without crack films and also confirming the results of the permeability tests.
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