Effect of probiotic and symbiotic yoghurt consumption on counts of human faecal bacteria and tyramine
2013
Komprda, T., Mendel Univ., Brno (Czech Republic) | Sládková, P., Mendel Univ., Brno (Czech Republic) | Kolářová, M., Mendel Univ., Brno (Czech Republic) | Zorníková, G., Mendel Univ., Brno (Czech Republic) | Sládek, Z., Mendel Univ., Brno (Czech Republic) | Rožnovská, D., Mendel Univ., Brno (Czech Republic)
The purpose of the study was to compare the impact of consumption of yoghurt enriched with Bifidobacterium animalis + Lactobacillus acidophilus (P), and yoghurt containing the same strains + inulin (S), on counts of faecal bacteria in healthy subjects. A randomized, parallel-group, crossover, open-label intervention with 66 volunteers was carried out. The three-week administration of both P and S yoghurt increased (p less than 0.01) counts of bifidobacteria and L. acidophilus, and decreased (p less than 0.01) counts of clostridia, enterococci and E. coli in faeces, in comparison with the control diet. Moreover, consumption of both P- and S-yoghurt decreased (p less than 0.05) the counts of tyramine-producing enterococci and E. coli among the faecal isolates. In the S-group, counts of bifidobacteria and L. acidophilus remained higher, and counts of clostridia, enterococci and E. coli lower (p less than 0.05) after one-week wash-out period, in comparison with the pre-administration phase. It was concluded that the S-yoghurt was superior to the P-product in maintaining the increased levels of beneficial bacteria and decreased counts of potentially deleterious bacteria in the intestine.
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