This thesis examines the influence of packaging on the microbial condition of beef for sale. The beef - Muscullus semimembranosus - was studied in an unpackaged state, and in the packaging of stretchable plastic wrap, in multilayer polyamide - polyethylene (PA / PE) wrap using a protective atmosphere and using 80% of vacuum into a bag from a multi-layered PA / PE wrap. The beef was stored at refrigerated temperature of +5 ° C. The total number of microorganisms (the number of colony forming units) were examined for 27 days. The compared samples show that the speed of increasing number of microorganisms is dependent on the type of packaging. According to the observed averages the best results are showed at meat packaged into a modified atmosphere and vacuum packaging, where there were no significant differences between these two types. Statistically there were no sigificant differences between the observed types of packaging. Packing in plastic wrap reduced microbial contamination of meat compared to unpackaged meat, but with vacuum packaging and modified atmosphere it could not be compared.
| Identifer | oai:union.ndltd.org:nusl.cz/oai:invenio.nusl.cz:154394 |
| Date | January 2013 |
| Creators | KOURKOVÁ, Dita |
| Source Sets | Czech ETDs |
| Language | Czech |
| Detected Language | English |
| Type | info:eu-repo/semantics/masterThesis |
| Rights | info:eu-repo/semantics/restrictedAccess |
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