Physicochemical, Antimicrobial and Antioxidant Properties of Chitosan Films Incorporated with Carvacrol

Molecules

Marco A. López-Mata¹  Saul Ruiz-Cruz¹  Norma P. Silva-Beltrán¹  José de Jesús Ornelas-Paz²  Paul B. Zamudio-Flores² 

[1] Departamento de Biotecnología y Ciencias Alimentarias, Instituto Tecnológico de Sonora, 5 de febrero 818 sur, Cd. Obregón, Sonora 85000, Mexico;Centro de Investigación en Alimentación y Desarrollo A.C., Av. Río Conchos S/N Parque Industrial, Cuauhtémoc, Chihuahua 31570, Mexico

关键词: carvacrol;    antibacterial;    antioxidant;    water vapor permeability;    chitosan film;   

DOI  :  10.3390/molecules181113735

来源: mdpi

【 摘 要 】

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.

【 授权许可】

CC BY   
© 2013 by the authors; licensee MDPI, Basel, Switzerland.