Potential of a nisin-containing bacterial cellulose film to inhibit Listeria monocytogenes on processed meats

Nguyen, V.T, Gidley, M.J. and Dykes, G A. (2008) Potential of a nisin-containing bacterial cellulose film to inhibit Listeria monocytogenes on processed meats. Food Microbiology, 25 3: 471-478. doi:10.1016/j.fm.2008.01.004


Author Nguyen, V.T
Gidley, M.J.
Dykes, G A.
Title Potential of a nisin-containing bacterial cellulose film to inhibit Listeria monocytogenes on processed meats
Formatted title
Potential of a nisin-containing bacterial cellulose film to inhibit Listeria monocytogenes on processed meats
Journal name Food Microbiology   Check publisher's open access policy
ISSN 0740-0020
Publication date 2008-12-01
Year available 2008
Sub-type Article (original research)
DOI 10.1016/j.fm.2008.01.004
Open Access Status DOI
Volume 25
Issue 3
Start page 471
End page 478
Total pages 8
Editor Tortorello, M.L.
Place of publication United Kingdom
Publisher Elsevier
Language eng
Subject C1
860199 Processed Food Products and Beverages (excl. Dairy Products) not elsewhere classified
090899 Food Sciences not elsewhere classified
Abstract A bacterially produced cellulose film containing nisin was developed and used in a proof-of-concept study to control Listeria monocytogenes and total aerobic bacteria on the surface of vacuum-packaged frankfurters. Bacterial cellulose pellicles were produced by Gluconacetobacter xylinus K3 in Corn Steep Liquor-Mannitol Medium and were subsequently purified before nisin was incorporated into them. Investigations into the effect of nisin concentrations and contact times on incorporation of nisin into cellulose films showed that the lowest nisin concentration and shortest time needed for production of an effective antimicrobial cellulose film were 625 1 U ml(-1) and 6 h, respectively. The active cellulose films produced under these conditions did not, however, significantly reduce L. monocytogenes populations on frankfurters (P > 0.05) during refrigerated storage for 14 days as compared to the controls. Films produced using a higher concentration of nisin (2500 IU ml(-1)) with the same exposure time (6 h) resulted in a significant (P < 0.05) decrease in L. monocytogenes counts on frankfurters of similar to 2 log CFU g(-1) after 14 days of storage as compared to the control. Both the above-mentioned films showed a similar effectiveness in reducing total aerobic bacterial populations as measured by total aerobic plate counts on frankfurters. For both films, total aerobic bacterial levels were significantly (P > 0.05) reduced by similar to 3.3 log CFU g(-1) after 14 days of storage as compared to control samples. Bacterial cellulose films were demonstrated in this study to have potential applicability as antimicrobial packaging films or inserts for processed meat products. (C) 2008 Elsevier Ltd. All rights reserved.
Keyword Biotechnology & Applied Microbiology
Food Science & Technology
Microbiology
Biotechnology & Applied Microbiology
Food Science & Technology
Microbiology
BIOTECHNOLOGY & APPLIED MICROBIOLOGY
FOOD SCIENCE & TECHNOLOGY
MICROBIOLOGY
Q-Index Code C1
Q-Index Status Confirmed Code
Institutional Status UQ

 
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Created: Sun, 19 Apr 2009, 22:48:46 EST by Emma Cushworth on behalf of School of Land, Crop and Food Sciences