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Effectiveness of chitosan-coated plastic films incorporating antimicrobials in inhibition of Listeria monocytogenes on cold-smoked salmon.
Int J Food Microbiol. 2008 Oct 31; 127(3):235-40.IJ

Abstract

The objective of this study was to evaluate the efficacy of chitosan-coated plastic films incorporating five Generally Recognized as Safe (GRAS) antimicrobials (nisin, sodium lactate (SL), sodium diacetate (SD), potassium sorbate (PS) and sodium benzoate (SB)) against Listeria monocytogenes on cold-smoked salmon. Salmon samples were surface-inoculated with a five-strain cocktail of L. monocytogenes and packaged in chitosan-coated plastic films containing 500 IU/cm(2) of nisin, 9 mg/cm(2) of SL, 0.5 mg/cm(2) of SD, 0.6 mg/cm(2) of PS, or 0.2 mg/cm(2) of SB, and stored at room temperature (ca. 20 degrees C) for 10 days. The film incorporating SL was the most effective, completely inhibiting the growth of L. monocytogenes during 10 days of storage. L. monocytogenes in samples packaged in the other four antimicrobial films grew, but the increase in counts was lower than the control. The antilisterial efficacy of films containing lower concentrations of SL (2.3 mg/cm(2) and 4.5 mg/cm(2)) and binary combinations SL, PS, SD, SB and nisin were subsequently evaluated. Among all the treatments, chitosan-coated plastic films with 4.5 mg/cm(2) SL, 4.5 mg/cm(2) SL-0.6 mg/cm(2) PS and 2.3 mg/cm(2) SL-500 IU/cm(2) nisin were the most effective. These three most effective antimicrobial films were then tested at refrigerated temperature. They completely inhibited the growth of L. monocytogenes on smoked salmon for at least 6 weeks. Chitosan-coated plastic films containing 4.5 mg/cm(2) SL can potentially assist the smoked-salmon processing industry in their efforts to control L. monocytogenes.

Authors+Show Affiliations

Department of Animal and Food Sciences, University of Delaware, Newark, DE 19716-2150, USA.No affiliation info availableNo affiliation info available

Pub Type(s)

Journal Article
Research Support, Non-U.S. Gov't

Language

eng

PubMed ID

18707789

Citation

Ye, Mu, et al. "Effectiveness of Chitosan-coated Plastic Films Incorporating Antimicrobials in Inhibition of Listeria Monocytogenes On Cold-smoked Salmon." International Journal of Food Microbiology, vol. 127, no. 3, 2008, pp. 235-40.
Ye M, Neetoo H, Chen H. Effectiveness of chitosan-coated plastic films incorporating antimicrobials in inhibition of Listeria monocytogenes on cold-smoked salmon. Int J Food Microbiol. 2008;127(3):235-40.
Ye, M., Neetoo, H., & Chen, H. (2008). Effectiveness of chitosan-coated plastic films incorporating antimicrobials in inhibition of Listeria monocytogenes on cold-smoked salmon. International Journal of Food Microbiology, 127(3), 235-40. https://doi.org/10.1016/j.ijfoodmicro.2008.07.012
Ye M, Neetoo H, Chen H. Effectiveness of Chitosan-coated Plastic Films Incorporating Antimicrobials in Inhibition of Listeria Monocytogenes On Cold-smoked Salmon. Int J Food Microbiol. 2008 Oct 31;127(3):235-40. PubMed PMID: 18707789.
* Article titles in AMA citation format should be in sentence-case
TY - JOUR T1 - Effectiveness of chitosan-coated plastic films incorporating antimicrobials in inhibition of Listeria monocytogenes on cold-smoked salmon. AU - Ye,Mu, AU - Neetoo,Hudaa, AU - Chen,Haiqiang, Y1 - 2008/07/15/ PY - 2008/04/02/received PY - 2008/06/17/revised PY - 2008/07/09/accepted PY - 2008/8/19/pubmed PY - 2009/1/13/medline PY - 2008/8/19/entrez SP - 235 EP - 40 JF - International journal of food microbiology JO - Int J Food Microbiol VL - 127 IS - 3 N2 - The objective of this study was to evaluate the efficacy of chitosan-coated plastic films incorporating five Generally Recognized as Safe (GRAS) antimicrobials (nisin, sodium lactate (SL), sodium diacetate (SD), potassium sorbate (PS) and sodium benzoate (SB)) against Listeria monocytogenes on cold-smoked salmon. Salmon samples were surface-inoculated with a five-strain cocktail of L. monocytogenes and packaged in chitosan-coated plastic films containing 500 IU/cm(2) of nisin, 9 mg/cm(2) of SL, 0.5 mg/cm(2) of SD, 0.6 mg/cm(2) of PS, or 0.2 mg/cm(2) of SB, and stored at room temperature (ca. 20 degrees C) for 10 days. The film incorporating SL was the most effective, completely inhibiting the growth of L. monocytogenes during 10 days of storage. L. monocytogenes in samples packaged in the other four antimicrobial films grew, but the increase in counts was lower than the control. The antilisterial efficacy of films containing lower concentrations of SL (2.3 mg/cm(2) and 4.5 mg/cm(2)) and binary combinations SL, PS, SD, SB and nisin were subsequently evaluated. Among all the treatments, chitosan-coated plastic films with 4.5 mg/cm(2) SL, 4.5 mg/cm(2) SL-0.6 mg/cm(2) PS and 2.3 mg/cm(2) SL-500 IU/cm(2) nisin were the most effective. These three most effective antimicrobial films were then tested at refrigerated temperature. They completely inhibited the growth of L. monocytogenes on smoked salmon for at least 6 weeks. Chitosan-coated plastic films containing 4.5 mg/cm(2) SL can potentially assist the smoked-salmon processing industry in their efforts to control L. monocytogenes. SN - 0168-1605 UR - https://www.unboundmedicine.com/medline/citation/18707789/Effectiveness_of_chitosan_coated_plastic_films_incorporating_antimicrobials_in_inhibition_of_Listeria_monocytogenes_on_cold_smoked_salmon_ L2 - https://linkinghub.elsevier.com/retrieve/pii/S0168-1605(08)00394-2 DB - PRIME DP - Unbound Medicine ER -