Physical Properties and Antimicrobial Activity of a Poly(Lactic Acid)/Poly(Trimethylene Carbonate) Film Incorporated with Thymol

Yan Wu; Ming Wei Yuan; Ji Yi Yang; Yu Yue Qin; Ming Long Yuan; Jian Xin Cao

doi:10.4028/www.scientific.net/AMR.884-885.481

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HomeAdvanced Materials ResearchAdvanced Materials Research Vols. 884-885Physical Properties and Antimicrobial Activity of...

Physical Properties and Antimicrobial Activity of a Poly(Lactic Acid)/Poly(Trimethylene Carbonate) Film Incorporated with Thymol

Abstract:

Thymol (TH), which has antimicrobial effect on many food pathogens, was incorporated as antimicrobial agent into composite poly (lactic acid)/poly (trimethylene carbonate)(PLA-PTMC) films. Antimicrobial active films based on PLA-PTMC were prepared by incorporating thymol at five different concentrations: 0, 3, 6, 9 and 12 %(w/w). The mechanical characterization, water vapor permeability (WVP), and antimicrobial activity of all formulations composite film were carried out. A decrease in elastic modulus was obtained for the active composite film compared with neat PLA-PTMC film. The presence of thymol decreased water vapor permeability, with a significant antimicrobial activity. Antimicrobial activities of films were tested against Escherichia coli, Staphylococcus aurous, Listeria, Bacillus subtilis, and Salmonella. Increasing amount of the thymol in the film caused a significant increase in inhibitory zones. These results suggest that thymol incorporated PLA-PTMC films have a prospectively potential in antimicrobial food packaging.

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Periodical:

Advanced Materials Research (Volumes 884-885)

Pages:

481-484

DOI:

https://doi.org/10.4028/www.scientific.net/AMR.884-885.481

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Online since:

January 2014

Authors:

Yan Wu, Ming Wei Yuan, Ji Yi Yang, Yu Yue Qin, Ming Long Yuan, Jian Xin Cao

Keywords:

Antimicrobial Activity, Composite Film, Physical Properties, Poly(Lactic Acid)/Poly(Trimethylenecarbonate), Thymol

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