Abstract
The objective of this study was to prepare pectin films (PEC) activated by copaiba oil (CP) nanoemulsions (NE). CP-NE were added to film-forming formulations based on pectin and then dried into films by continuous casting. Chemical, morphological, thermal, mechanical and antimicrobial properties were studied in addition to biodegradability by the respirometer test. In general, the nanoemulsions were suitably dispersed in the PEC matrix, both phases showing good interaction and compatibility. The nanoemulsions caused large changes in PEC, such as increased roughness with oil concentration, gradual reduction of the elastic modulus and tensile strength, increased elongation at break, and antimicrobial activity against S. aureus and E. coli. Another important observation was the maintenance of the biodegradation profile of the films after the addition of CP-NE. In conclusion, the active pectin film manufactured with CP emulsions showed great potential for active food packaging and is a promising alternative to reduce environmental impacts.
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