Carboxymethyl cellulose-agar biocomposite film activated with summer savory essential oil as an antimicrobial agent
Journal article, 2019

Carboxymethyl cellulose (CMC)-agar biocomposite film was developed by a solvent casting method and the effects of summer savory essential oil (SSEO) at 0.5, 1.0 and 1.5% v/v on antimicrobial, microstructural, mechanical and optical properties as well as water sensitivity of the films were studied. Results showed that incorporation of SSEO into the biocomposite film developed active films with good antimicrobial agent growth inhibition activity against Gram-positive bacteria (S. aureus, B. cereus and L. monocytogenes) and less powerfully against Gram-negative bacteria (E. coli). Addition of the SSEO at 1.0 and 1.5% increased microstructural heterogeneity of the films and hence significantly (p < 0.05) increased water vapor permeability of the films while reducing their tensile strength. In contrast, mechanical flexibility and surface hydrophobicity of the films was significantly (p < 0.05) improved as a function of SSEO addition. The active films showed substantially lower swelling ratio compared to the CMC-agar film when 1.5% SSEO was added, but the transparency of the films was reduced. Finally, the results showed that SSEO can act as an antimicrobial agent in combination with CMC-agar film. However, it modifies properties of the film depending on the applied concentration.

Active film, Edible film, Essential oil, Carboxymethyl Cellulose, Agar

Author

Mehdi Abdollahi

Chalmers, Biology and Biological Engineering, Food and Nutrition Science

Sorush Damirchi

Islamic Azad University

Masoud Shafafi

Islamic Azad University

Masoud Rezaei

Tarbiat Modares University

Pejman Ariaii

Islamic Azad University

International Journal of Biological Macromolecules

0141-8130 (ISSN)

Vol. 126 561-568

Subject Categories

Polymer Chemistry

Polymer Technologies

Other Chemistry Topics

Areas of Advance

Life Science Engineering (2010-2018)

Materials Science

DOI

10.1016/j.ijbiomac.2018.12.115

More information

Latest update

7/17/2019