Journal
FOOD MICROBIOLOGY
Volume 76, Issue -, Pages 146-153Publisher
ACADEMIC PRESS LTD- ELSEVIER SCIENCE LTD
DOI: 10.1016/j.fm.2018.05.004
Keywords
Emulsion; Organic acid; Combined treatment; Listeria monocytogenes; Treviso leaves
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This study was performed to examine the inhibitory effect of combined treatments with a positively charged cinnamon leaf oil (P-CL) emulsion and various organic acids against Listeria monocytogenes inoculated on fresh-cut Treviso leaves. Combined treatments with a P-CL emulsion and an organic acid exhibited a higher inhibitory effect than treatment with each alone or NaOCl. The highest inhibitory effect was achieved by combined treatment with the P-CL emulsion and lactic acid (LA), which showed a 2.85-log reduction compared to distilled water washing. In addition, the inhibitory effect of the combined treatment was maintained during 6 days of subsequent storage, and showed a 3.24-3.39-log reduction compared to unwashed samples. Treviso leaves treated with the P-CL emulsion and LA also maintained their sensorial properties, including appearance, odor, hardness, freshness, and overall acceptability, during subsequent storage. Therefore, combined treatment with a P-CL emulsion and LA can be used to effectively ensure the microbial safety and organoleptic quality of fresh-cut Treviso leaves.
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