PREDOMINANT MICROFLORA OF VACUUM-PACKED FRANKFURTERS

The aim of the investigation was to determine microbial contamination and to isolate predominant bacteria of vacuum packed frankfurters, being in trade circulation, during storage at different temperatures. The frankfurters were stored at 4^oC, 8^oC, and 15^oC. The total count of microorganisms with regard to psychrotrophic bacteria and lactic acid bacteria (LAB) was determined. Predominant colonies were isolated for further characterization. In addition, pH values were measured over the storage time. The initial microbial quality of frankfurters was satisfactory. The largest increase in the number of microorganisms was observed during the first week of storage at all temperatures. Three species (Leuconostoc mesenteroides ssp. mesenteroides, Lactobacillus fermentum and Weisella viridescens) dominated in the spoiled product. Sensory changes in the frankfurters were not linked with bacterial number but with the kind of spoiling flora.

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eISSN:	2083-6007
ISSN:	1230-0322

W latach 2022-2024 kwartalnik naukowy Polish Journal of Food and Nutrition Sciences realizuje projekt nr RCN/SP/0520/2021/1 finansowany ze środków budżetu państwa – Ministerstwo Edukacji i Nauki w ramach programu „Rozwój czasopism naukowych”. Dofinansowanie wynosi 120 000 zł. W ramach projektu podejmowane są działania zmierzające do podniesienia poziomu praktyk wydawniczych i edytorskich, zwiększenia wpływu czasopism na rozwój nauki oraz utrzymania się czasopism w międzynarodowym obiegu naukowym.

In the years 2022-2024, the scientific quarterly Polish Journal of Food and Nutrition Sciences accomplishes a project no. RCN/SP/0520/2021/1 financed from the state budged – Ministry of Education and Science Republic of Poland in the framework of a program “Development of scientific journals”. The financing amounts to 120,000 PLN. The program aims at improving the level of publishing and editing practices, increasing the impact of scientific journals on science development, and extending the international range of scientific journals.