Physical Properties and Antimicrobial Activity of a Poly(lactic acid)/poly(ε-caprolactone) Film Antimicrobial Coating with Chitosan

Abstract:

In this work a preliminary study on the physical properties and antimicrobial activity of environmentally friendly active films to be produced is presented. Chitosan (CH), which has antimicrobial effect on many food pathogens, was coated as antimicrobial agent into composite poly (lactic acid)/poly (ε-caprolactone)(PLA-PCL) films. Antimicrobial active films based on PLA-PCL were prepared by coating five different chitosan concentrations: 0, 2, 4, 6 and 8 %(w/w). The mechanical characterization, water vapor permeability (WVP), and antimicrobial activity of composite PLA-PCL film coating with chitosan were carried out. The mechanical characterization, water vapor permeability of composite PLA-PCL films coating with chitosan was uninfluenced. Antimicrobial activities of films were tested against Staphylococcus aurous, Escherichia coli, Bacillus subtilis, Listeria, Salmonella. The antimicrobial activity of films were significantly increase with the chitosan concentration. The results of this work suggest that chitosan coated composite PLA-PCL films have a prospectively potential in antimicrobial activity food packaging.

• Periodical: Advanced Materials Research (Volume 900)
• Pages: 320-323
• DOI: https://doi.org/10.4028/www.scientific.net/AMR.900.320
• Online since: February 2014
• Authors: Ming Wei Yuan, Yan Wu, Yu Yue Qin, Ming Long Yuan*, Hong Li Li
• Keywords: Antimicrobial Activity, Chitosan, Composite Film, Physical Properties, Poly(lactic acid)/Poly(ε-caprolactone)

References

[1] Sorrentino A., Gorrasi G., Vittoria V. Potential perspectives of bio-nanocomposites for food packaging applications: Trends in Food Science & Technology, 2007, 18(2): 84-95.

DOI: 10.1016/j.tifs.2006.09.004

[2] Coles, R., McDowell, D., & Kirwan, M. J. (Eds. ). Food packaging technology. Oxford: Blackwell, (2003).

[3] Giles, Geoff A., & David R. Bain, eds. Technology of plastics packaging for the consumer market. CRC Press, (2001).

[4] Hernandez, R., Selke, S. E. M., & Cultler, J. Plastics packaging: properties, processing, applications, regulations. Munich, Germany: Hanser Gardner Publications. (2000).

[5] Erdohan Z Ö, Çam B, Turhan K N. Characterization of Antimicrobial Polylactic Acid Based Films[J]. Journal of Food Engineering, 2013, 19(1): 308-315.

DOI: 10.1016/j.jfoodeng.2013.05.043

[6] Appendini P., Hotchkiss J.H. Review of antimicrobial food packaging: Innovative Food Science & Emerging Technologies, 2002, 3(2): 113-126.

DOI: 10.1016/s1466-8564(02)00012-7

[7] ASTM. Standard test methods for tensile properties of plastics, standard D638M. In: Annual Book of American Standard Testing Methods, Philadelphia, USA, p.1993, 59–67.

[8] ASTM. Standard test methods for water vapor transmission of materials, standard E96-80. In: Annual Book of American Standard Testing Methods, Philadelphia, USA, p.1983, 761–770.

[9] A.G. Ponce, R. Fritz, C.E. Del Valle & S.I. Roura. Antimicrobial activity of essential oils on the native microflora of organic Swiss chard: LWT - Food Science and Technology, 2003, 36(7): 679-684.

DOI: 10.1016/s0023-6438(03)00088-4