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Effectiveness of antimicrobial packa...

Neetoo, Swaleha Hudaa.

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Effectiveness of antimicrobial packaging in controlling the growth of Listeria monocytogenes on cold-smoked salmon.

紀錄類型:	書目-語言資料,印刷品 : Monograph/item
正題名/作者:	Effectiveness of antimicrobial packaging in controlling the growth of Listeria monocytogenes on cold-smoked salmon./
作者:	Neetoo, Swaleha Hudaa.
面頁冊數:	131 p.
附註:	Adviser: Haiqiang Chen.
Contained By:	Masters Abstracts International45-06.
標題:	Agriculture, Food Science and Technology. -
電子資源:	http://pqdd.sinica.edu.tw/twdaoapp/servlet/advanced?query=1444673
ISBN:	9780549061052

Effectiveness of antimicrobial packaging in controlling the growth of Listeria monocytogenes on cold-smoked salmon.
Neetoo, Swaleha Hudaa.

Effectiveness of antimicrobial packaging in controlling the growth of Listeria monocytogenes on cold-smoked salmon. - 131 p.

Adviser: Haiqiang Chen.

Thesis (M.S.)--University of Delaware, 2007.

Cold-smoked salmon (CSS) has been classified a high-risk product for Listeria monocytogenes contamination. The objective of this study was therefore to examine if antimicrobial packaging could be used as a hurdle to inhibit L. monocytogenes on the surface of this food. Low density polyethylene (LDPE) films incorporating nisin at a level of 2000 IU/cm2 placed on CSS inoculated with 5 x 10 2 CFU/cm2 of L. monocytogenes (LM) reduced the LM counts by 3.9 log CFU/cm2 (compared with control) after 56 (4°C) and 49 (10°C) days of storage while reductions of 2.4 and 0.7 log CFU/cm2 were achieved for samples inoculated with a high level of L. monocytogenes (5 x 105 CFU/cm2) after 58 (4°C) and 43 (10°C) days, respectively. For samples packaged in film coated with 500 IU/cm2 of nisin, reductions ranged between 0.5 and 1.8 log CFU/cm2. Nisin also inhibited the proliferation of background microbiota on smoked salmon and achieved shelf-life extensions of 21 and 28 days at 4°C and 5 and 7 days at 10°C with nisin incorporated at levels of 500 and 2000 IU/cm 2, respectively. LDPE packaging films and cellulose edible coatings incorporating nisin (500 IU/cm2) in combination with 0.3% potassium sorbate (PS) or 0.3% potassium sorbate (PS) and 0.1% sodium benzoate (SB) were found to reduce the populations of L. monocytogenes and spoilage miocrobiota by a maximum of 2.7 and 5.6 log CFU/cm2 respectively after 4 weeks of refrigerated storage.

ISBN: 9780549061052Subjects--Topical Terms:

1017813
Agriculture, Food Science and Technology.

Effectiveness of antimicrobial packaging in controlling the growth of Listeria monocytogenes on cold-smoked salmon.
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