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Abstract
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Article Information:
Antimicrobial Effectiveness of Biobased Film Against Escherichia coli 0157:H7, Listeria monocytogenes and Salmonella typhimurium
Pornpun Theinsathid, Wonnop Visessanguan, Yutthana Kingcha and Suwimon Keeratipibul
Corresponding Author: Suwimon Keeratipibul
Submitted: 2011 May, 30
Accepted: 2011 July, 18
Published: 2011 August, 31 |
Abstract:
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Antimicrobial packaging, an active packaging concept, can be considered challenging technology
that could have a significant impact on food safety of meat and meat products. The feasibility of polylactic acid
(PLA)-based film was evaluated for its application as a material for antimicrobial film. A bio-based commercial
polylactic acid (PLA) product, Ecovio®, was used as an environmentally friendly polymer matrix. The PLA
based film was incorporated with lactic acid or sodium lactate by extrusion film-blowing process. The
antimicrobial activity of films against Escherichia coli O157:H7, Listeria monocytogenes and Salmonella
enterica Serovar Typhimurium (S. Typhimurium) were evaluated. Antimicrobial film incorporated with lactic
acid packaging film was found to be highly effective in inhibiting L. monocytogenes. In contrast, no inhibitory
activity was observed against E. coli O157:H7 and S. Typhimurium. This is consistent with Minimum
Inhibitory Concentration (MIC) studies which indicated that undissociated lactic acid was more efficient in
inhibiting L. monocytogenes than enterobacteria. This preliminary study shows the potential use of bio-based
film as one hurdle technology in combination with good manufacturing practices and adequate storage
temperatures. The use of antimicrobial packaging may contribute to improve the safety in minimally processed
foods. Further work is required to improve the mechanical properties of the material in order to meet industry requirements.
Key words: Bio-based film, food safety, innovative antimicrobial film, polylactic acid, , ,
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Cite this Reference:
Pornpun Theinsathid, Wonnop Visessanguan, Yutthana Kingcha and Suwimon Keeratipibul, . Antimicrobial Effectiveness of Biobased Film Against Escherichia coli 0157:H7, Listeria monocytogenes and Salmonella typhimurium. Advance Journal of Food Science and Technology, (4): 294-302.
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ISSN (Online): 2042-4876
ISSN (Print): 2042-4868 |
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