Physicochemical, antimicrobial and antioxidant properties of chitosan films incorporated with carvacrol

Marco A. López-Mata, Saul Ruiz-Cruz*, Norma P. Silva-Beltrán, José De Jesús Ornelas-Paz, Paul B. Zamudio-Flores, Silvia E. Burruel-Ibarra

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

96 Scopus citations

Abstract

Chitosan films (CF) with carvacrol (CAR) [0.5%, 1.0% and 1.5% v/v] were prepared by the emulsion method. The retained CAR, water solubility, water vapor permeability (WVP), optical, mechanical properties, antibacterial and antioxidant capacity of films were analyzed. The results indicate that the retention of CAR in the CF was ∼50%. The incorporation of CAR to CF decreased the water solubility, the WVP, the yellowing and transparency and the tensile strength, but increased the stiffness. Microcapsules with diameters of 2 to 7 μm were found on the surface CF-CAR. The CF-CAR with highest CAR concentrations showed antibacterial activity against S. typhimurium and E. coli O157:H7. The CF-CAR had higher antioxidant capacity and an increased protective effect against oxidation of erythrocytes in different grades. These results suggest potential applications of CF-CAR as active packaging to preserve food products.

Original languageEnglish
Pages (from-to)13735-13753
Number of pages19
JournalMolecules
Volume18
Issue number11
DOIs
StatePublished - Nov 2013

Keywords

  • Antibacterial
  • Antioxidant
  • Carvacrol
  • Chitosan film
  • Water vapor permeability

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