R. A. D. Oliveira, Gislaine Ferreira Nogueira, F. Fakhouri
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Effect of incorporation of blackberry particles obtained by freeze drying on physicochemical properties of edible films
This research work aimed to evaluate the physicochemical properties of arrowroot starch films plasticized with glycerol and incorporated in film-forming solution directly (D) and by sprinkling (S) with 0%, 20%, 30%, 40% (mass blackberry solids / biopolymer mass) of blackberry pulp (BL) powder and freeze dried microencapsulated blackberry pulp (ML) using mixture of gum arabic and arrowroot starch (1: 1, mass / mass). Thickness, water solubility and water vapour permeability of the films significantly increased with increasing concentration of blackberry powder. Compared to arrowroot starch film (0%), the surface of films with BL and ML powder became irregular and rough. Keywords: Lyophilization; microstructure; water solubility; water vapor permeability; packing.
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