期刊名称：Advance Journal of Food Science and Technology
印刷版ISSN：2042-4868
电子版ISSN：2042-4876
出版年度：2011
卷号：3
期号：4
页码：294-302
出版社：MAXWELL Science Publication
摘要：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.
关键词：Bio-based film ; food safety ; innovative antimicrobial film ; polylactic acid ; ;
