Table shows the values of the swelling index of the ternary films. All samples exhibited a common trend in which constitutes initially present a continuous increase in the swelling to a maximum level that is reached in 5 min with a subsequent decrease due to saturation, solubilization and release of water-soluble film components. The swelling behavior is highly influenced by the proportion of PVA present in the blend since it alone exhibits swelling exceeding 700% in distilled water . , thus effectiveness of thernary film incorporeated with hydroalcoholic extract of mate tea was tested against S. aureus. This result is in accordance with the results previously reported in previous studies .