Iranian Research Organization for Science and Technology (IROST) Innovative Food Technologies 2783-350X 4 3 2017 04 21 Preparation of chitosan/tragacanth composite film and evaluation of its mechanical and physical properties Preparation of chitosan/tragacanth composite film and evaluation of its mechanical and physical properties 151 161 417 10.22104/jift.2017.417 FA S. Mahdi Ojagh Associate Professor, Department of Fisheries and Enviromental Sciences, Gorgan University of Agricultural Sciences and Natural Resources, Gorgan, Iran 0000-0001-7325-1263 Fatemeh Shariatmadari Ms.C of Seafood Processing, Department of Fisheries and Enviromental Sciences, Gorgan University of Agricultural Sciences and Natural Resources, Gorgan, Iran Afshin Adeli Assistant Professor, Department of Fisheries and Enviromental Sciences, Gorgan University of Agricultural Sciences and Natural Resources, Gorgan, Iran Moazameh Kordjazi Assistant Professor, Department of Fisheries and Enviromental Sciences, Gorgan University of Agricultural Sciences and Natural Resources, Gorgan, Iran Mehdi Abdollahi Ph. D student of Seafood Processing, Department of Fisheries, Tarbiat Modares University, Noor, Iran. Journal Article 2016 11 12 In this research, the combination of two levels of tragacanth gum (15 and 30%) on chitosan film 2 % were studied and produced film characteristics checked out. The results are proved the best properties in tragacanth 30% in combination with chitosan. Moisture and solubility was not significantly increased by adding tragacanth to chitosan (p>0.05). There was a significant difference between water vapor permeability of chitosan (control) and composite (p-1 s^-1 p^-1. Tensile strength of chitosan did not change significantly with the addition of tragacanth (p>0.05) but the lowest tensile strength showed in the composite 15%. Elongation percentage was reduced by addition of tragacanth. Add tragacanth to chitosan did not cause significant changes in its transparency (p>0.05) but the degree of transparency was reduced, so that the lowest transparency was observed in the composite 30%. The results of the present study demonstrated that the addition of tragacanth into the chitosan improve the physical and mechanical properties of this polymer in the film and increase its efficiency for fish packaging. <strong></strong> In this research, the combination of two levels of tragacanth gum (15 and 30%) on chitosan film 2 % were studied and produced film characteristics checked out. The results are proved the best properties in tragacanth 30% in combination with chitosan. Moisture and solubility was not significantly increased by adding tragacanth to chitosan (p>0.05). There was a significant difference between water vapor permeability of chitosan (control) and composite (p-1 s^-1 p^-1. Tensile strength of chitosan did not change significantly with the addition of tragacanth (p>0.05) but the lowest tensile strength showed in the composite 15%. Elongation percentage was reduced by addition of tragacanth. Add tragacanth to chitosan did not cause significant changes in its transparency (p>0.05) but the degree of transparency was reduced, so that the lowest transparency was observed in the composite 30%. The results of the present study demonstrated that the addition of tragacanth into the chitosan improve the physical and mechanical properties of this polymer in the film and increase its efficiency for fish packaging. <strong></strong> https://jift.irost.ir/article_417_41ae36ecb9b3eee609d05b90c14222fb.pdf