Spray-dried egg white albumen (designated EW; with 73 wt.%protein, 6 wt.% ashes and 8 wt.% moisture) provided byOVOSEC S.A. (Spain) was used as base material for bioplasticsmanufacture. On the other hand, tragacanth gum (designatedTG) (39–42% carbon content) was supplied by Sigma–Aldrich