Agar hydrogel with silver nanoparticles to prolong the shelf life of Fior di Latte cheese

The objective of this work was to evaluate the effectiveness of an antimicrobial packaging system containing active nanoparticles on the quality deterioration of Fior di Latte cheese. To this aim, 3 concentrations of silver montmorillonite embedded in agar were used. The cell loads of spoilage and u...

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Bibliographic Details
Published in:Journal of dairy science 2011-04, Vol.94 (4), p.1697-1704
Main Authors: Incoronato, A.L., Conte, A., Buonocore, G.G., Del Nobile, M.A.
Format: Article
Language:English
Subjects:
Agar
Animal productions
antimicrobial packaging
Biological and medical sciences
cations
Cheese - microbiology
cheeses
cold storage
color
Fior di Latte
Food industries
Food Preservation - methods
Fundamental and applied biological sciences. Psychology
hydrocolloids
Hydrogel, Polyethylene Glycol Dimethacrylate
markets
Metal Nanoparticles
microorganisms
Milk and cheese industries. Ice creams
montmorillonite
nanocomposite
nanoparticles
nanosilver
odors
shelf life
Silver
spoilage
storage time
Terrestrial animal productions
Vertebrates
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Summary:The objective of this work was to evaluate the effectiveness of an antimicrobial packaging system containing active nanoparticles on the quality deterioration of Fior di Latte cheese. To this aim, 3 concentrations of silver montmorillonite embedded in agar were used. The cell loads of spoilage and useful microorganisms were monitored during a refrigerated storage period. Moreover, cheese sensory quality (i.e., odor, color, consistency, and overall quality) was evaluated by means of a panel test. Results showed that the active packaging system markedly increased the shelf life of Fior di Latte cheese, due to the ability of silver cations to control microbial proliferation, without affecting the functional dairy microbiota and the sensory characteristics of the product. The active packaging system developed in this work could be used to prolong the shelf life of Fior di Latte and boost its distribution beyond local market borders.
ISSN:0022-0302
1525-3198
DOI:10.3168/jds.2010-3823