VIABILITY OF  LACTOBACILLUS ACIDOPHILUS  IN FERMENTED MILK PRODUCTS DURING REFRIGERATED STORAGE

The viability was studied for Lactobacillus acidophilus strains (B, V-74, CH-2 and CH-5) and their mixtures in fermented milk products under refrigeration at 7⁰C for 35 days. Lactobacillus acidophilus B exhibited no significant loss in viability after 35 days and maintained above 10⁷ cfu/mL of live cell numbers following 35 days. Strain CH-5 showed the poorest survival and its viable counts at the end-point of the test were around 10⁴ cfu/mL. The mixtures of Lactobacillus acidophilus strains had a lower loss in viability than single-strain cultures. Their viable cell counts were over 10⁷ cfu/mL, which was more than the desired therapeutic-minimum dose. Regarding the viability displayed by the 4 strains, Lactobacillus acidophilus strain B is suggested to be the best culture for further use. Moreover, use of a mixed-strain culture of Lactobacillus acidophilus as a starter presents a good way to improve the viability of the organism during storage.

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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.