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      Preparation and characterization of whey protein film incorporated with TiO2 nanoparticles.

      1 , ,
      Journal of food science
      Wiley-Blackwell

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          Abstract

          Biodegradable titanium dioxide (TiO(2))/whey protein isolate (WPI) blend films were made by casting denatured WPI film solutions incorporated with TiO(2) nanoparticles. X-ray diffraction, UV-vis spectra, and fluorescence spectra of the films showed the successful incorporation of TiO(2) nanoparticles into the WPI matrix and indicated the interactions between TiO(2) and WPI. Mechanical tests revealed the antiplasticizing effect of TiO(2) nanoparticles on the WPI/TiO(2) film. Small amounts (<1 wt%) of added TiO(2) nanoparticles significantly increase the tensile properties of WPI film, but also decrease the moisture barrier properties. The addition of higher amounts (>1 wt%) of TiO(2) improves moisture barrier properties but lowers the tensile properties of the film. Microstructural evaluation confirmed the aggregation and distribution of TiO(2) nanoparticles within the WPI matrix and validated the results of functional properties of the WPI/TiO(2) film.

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          Author and article information

          Journal
          J. Food Sci.
          Journal of food science
          Wiley-Blackwell
          1750-3841
          0022-1147
          Sep 2009
          : 74
          : 7
          Affiliations
          [1 ] Dept of Biological Systems Engineering, Univ of Wisconsin-Madison, Madison, WI 53706, USA.
          Article
          JFDS1270
          10.1111/j.1750-3841.2009.01270.x
          19895492
          f5666cb1-611e-4533-9eb7-6bb77a5bf34e
          History

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