FOOD. Science. Technology. Quality

Food. SCIENCE. Technology. Quality

Food. Science. TECHNOLOGY. Quality

Food. Science. Technology. QUALITY

Authors

HELENA PANFIL-KUNCEWICZ, ANNA LIS, MONIKA MAJEWSKA

Title

Effect of active packaging on microbiological shelf-life and sensory parameters of tvorog cheeses

Abstract

In the study, active packaging (AP) with oxygen absorbers was used to package tvorog cheeses. A comparative material consisted of MAP (modified atmosphere packaging) packaged cheeses and of control cheeses packaged using active packaging (AP). All the packaged samples were cold stored over a period of 7, 14, and 21 days. The composition of the atmosphere inside the package of fresh and stored tvorog cheeses was determined, and all the samples were microbiologically analyzed and sensory assessed. The counts of coliforms, yeast, and moulds were determined. It was proved that the content of oxygen was very low both in AP and in MAP throughout storage and ranged from 0.00 % in AP (with oxygen absorbers) to 0.76 % in MAP. The oxygen absorbers effectively reduced the content of oxygen to trace amounts in the packages of tvorog cheeses. The results of a microbiological analysis of tvorog cheeses clearly point out that the packaging in the atmosphere composed of 100 % of CO2 inhibited, most effectively, the growth of the microorganism groups studied, thus, extended the shelf-life of tvorog cheeses to 21 days. The active packaging made it possible to keep the amount of microbes at a standard level only until the 14th day. Similar correlations were reported while assessing sensory attributes of tvorog cheeses using a grading approach.

Keywords

tvorog cheeses, shelf-life, modified atmosphere, active packaging, oxygen absorbers

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