Composite Film Developed From the Blends of Sesame Protein Isolate and Gum Rosin and Their Properties Thereof

摘要

Composite films from sesame protein isolate and gum rosin were prepared at different ratios by casting method. The effect of gum rosin (GR) addition on the physical, mechanical, thermal, optical, and morphological properties were investigated. Maximum tensile strength and minimum water vapor permeability was observed for composite film at 80: 20 ratio. Transparency of sesame protein film was observed to be lower as compared with composite films. DE values increased with increase in concentration of GR. X-ray diffraction of sesame protein film and composite films indicated amorphous structure of films. Differential scanning calorimetric curves of all films showed single T-g in the range of 108 degrees C-158.66 degrees C. All films exhibited weight loss in three stages (temperature ranged between 130 degrees C and 590 degrees C). Sesame protein film exhibited high degree of porosity. With the addition of GR porosity decreased and compactness increased. (C) 2016 Society of Plastics Engineers