The polyphenol concentrations migrated from the edible films
to the food simulants after 7 days of film exposition are shown in
Table 2. As expected, phenolic compounds migrated quickly to
aqueous medium, releasing the total amount of polyphenols along the migration assay. In contrast, a very low amount of phenolic
compounds was detected when ethanol was used as a fatty food
simulant. As it is well known, several factors may influence the
release behavior of active compounds from biopolymer films,
including the chemical composition of the active compounds,
polymereactive compound interactions, matrix structure and surrounding
medium conditions.