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    Properties of active gelatin films incorporated with rutin-loaded nanoemulsions

    Year: 2017

    Journal: Int. J. Biol. Macromol., Volume 98, MAY, page 39–49

    Authors: Dammak, Ilyes; de Carvalho, Rosemary Aparecida; Favaro Trindade, Carmen Silvia; Lourenco, Rodrigo Vinicius; do Amaral Sobral, Paulo Jose

    Organizations: Sao Paulo Research Foundation (FAPESP) [CEPID FoRC 13/07914-8, 15/02879-5]; Brazilian National Council for Scientific and Technological Development (CNPq)

    Keywords: Active packaging; Physical properties; Antioxidant activity

    Physico-chemical, mechanical, barrier, release profiles and antioxidant properties of composite gelatin based-films incorporated with rutin-loaded oil-in-water nanoemulsion, at various concentrations (5, 10, 15, or 20% (based on the weight of the gelatin powder)) were studied. All the gelatin/rutin-loaded nanoemulsion films displayed higher tensile strength and higher elongation at break than the gelatin control film. The composite films did not show significant differences in thickness, color, brightness and transparency. The structural properties evaluated by FTIR showed that the rutin-loaded nanoemulsion achieved complete miscibility within the gelatin matrix. All the gelatin/nanoemulsion films exhibited compact and homogenous microstructure. In addition, these films showed high antioxidant activities monitored by DPPH radical scavenging and reducing power activities. The Korsmeyer-Peppas model described well the rutin release profile. Rutin release was mainly governed by Fickian diffusion with simultaneous interfering swelling and disintegration phenomena. These results indicate that nanoemulsions-in-gelatin systems can function as potential active packaging systems to enhance shelf life of food products and then to provide a high-quality products (fresh/safe). (C) 2017 Elsevier B.V. All rights reserved.
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