Produção e caracterização físico-química de filmes a base de colágeno bovino, ágar-ágar e agarose

Abstract

The main objective in this work was to produce and characterize films from bovine collagen, agar and agarose, with the purpose of using the best advantages of these components, with satisfactory physico-chemical properties and with great potential to be applied in the packaging area. Rated collagen films, pure collagen with 0.5% agar-agar and agarose 0.5%, rated collagen agar-agar 0.5% and agarose 0.5% have been produced, followed by collagen laminating process rated with agar-agar 0.5% and agarose 0.5%. These films were described by FTIR, swelling index, thickness and moisture. Through the FTIR was possible to verify that those films added with agar, with pure or classified collagen addition or not, have shown greater possibility of moisture absorption. The lamination process did not affect the films swelling capacity. The greatest variation in the swelling index was observed in rated collagen film (FCc). The lamination process enhanced the thickness increase of the films, indicating the lowest possible permeability to gases and to water vapor. The 0.5% agar film with pure collagen (Cp - Aa 0.5%) showed higher moisture content, indicating a possible formation of more moisture channels drivers and interactions with water molecules. The films production based on bovine collagen, agar and agarose has shown to be satisfactory, however, the addition of agar-agar favored the formation of higher moisture absorption film.