Antiviral activities of cell-free supernatants of yogurts metabolites against some RNA viruses

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Antiviral activities of cell-free supernatants of yogurts metabolites against some RNA viruses
Hwa-Jung Choi; J H Song; Y J Ahn; S H Baek; Dur Han Kwon
Bibliographic Citation
European Food Research and Technology, vol. 228, no. 6, pp. 945-950
Publication Year
The antiviral activity of the cell-free supernatants (CFS) containing the metabolites of five yogurts fermented under anaerobic conditions with Lactobacillus acidophilus, Lactobacillus rhamnosus, Lactobacillus plantarum, Streptococcus thermophilus and Bifidobacterium bifidum, respectively, was initially evaluated against seven RNA viruses using virus-induced cytopathic effects reduction method, while comparing that of De Man, Rogosa, and Sharpe (MRS) broths containing metabolites fermented with the same bacteria. All the CFS of yogurt showed high antiviral activity against seven RNA viruses, while the CFS of MRS broth exhibited similar or lower antiviral activity. Each CFS of yogurt and MRS broth showed no cytotoxicity with normal morphology in Vero or MDCK cells. Furthermore, CFS of each yogurt was more effective than that of MRS broth against the three enteroviruses and CFS of yogurt containing metabolites fermented with L. plantarum exhibited strong anti-influenza virus activity among that of the other yogurt and MRS broth. Therefore, CFS of the yogurt containing metabolites fermented with probiotic bacteria showed high potential to be used for developing fermented milk-based foods or drugs.
Antiviral activityCytotoxicityMRS brothRNA virusesYogurt
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