Avicel pc 105

To elaborate the films, food-grade gelatin was used with a bloom of 220–240 g (Gelco S.A., Barranquilla, Colombia) along with pharmaceutical-grade microcrystalline cellulose, Avicel^® PC 105 (FMC Biopolymer, Campinas, Brazil); 99% purity glycerol (Sigma Aldrich, St. Louis, MI, USA); Tween 80 for synthesis (Merck, Darmstadt, Germany); and black pepper oleoresin (TECNAS S.A., Antioquia, Colombia). For the coating systems, Poly ( $\epsilon$ -caprolactone) (PCL) (Mn = 80,000) (Sigma Aldrich, Madrid, Spain), chloroform (Sigma Aldrich), and butanol (Sigma Aldrich) were used without further purifications steps.

To prepare the films, type B food-grade gelatin was used with a bloom of 220–240 g (Gelco S.A., Barranquilla, Colombia), along with pharmaceutical-grade microcrystalline cellulose, Avicel^® PC 105 (FMC Biopolymer, Campinas, Brazil); 99% purity glycerol (Sigma Aldrich, St. Louis, MO, USA); Tween 80 for synthesis (Merck, Darmstadt, Germany); and clove, nutmeg, and black pepper oleoresins (TECNAS S.A., Antioquia, Colombia).