Modification of functional properties of pullulan-whey protein bionanocomposite films with nanoclay

作者：Hassannia Kolaee Mahbobeh; Khodaiyan Faramarz^*; Shahabi Ghahfarrokhi Iman

来源：Journal of Food Science and Technology-Mysore, 2016, 53(2): 1294-1302.

DOI：10.1007/s13197-015-1778-3

• Whey protein
• Pullulan
• Nano clay
• Nanocomposite
• Film

In this study, biodegradable nanocomposite film composed of pullulan - whey protein isolate (WPI) - montmorillonite (MMT) were developed and characterized as a function of incorporating various amounts of MMT nanoparticles (0, 1, 3 and 5 % wt). Results showed that the water-vapor permeability, moisture content, moisture absorption and water solubility decreased when the nano-MMT content was increased. Tensile strength improved and elongation at break simultaneously decreased with increasing MMT content. The glass transition temperature (T-g(and melting-point temperature (T-m) increased with increasing nano-MMT content. Scanning electron microscope (SEM) and X-ray diffraction (XRD) analysis revealed uniform distribution of MMT into the polymer matrix. Atomic force microscopy (AFM) showed enhancement of films' roughness with increasing MMT content.

• 出版日期2016-2