Auto-aggregation and co-aggregation ability in bifidobacteria and clostridia
Jazyk angličtina Země Spojené státy americké Médium print-electronic
Typ dokumentu časopisecké články, práce podpořená grantem
- MeSH
- bakteriální adheze * MeSH
- Bifidobacterium klasifikace růst a vývoj izolace a purifikace fyziologie MeSH
- Clostridium růst a vývoj izolace a purifikace fyziologie MeSH
- feces mikrobiologie MeSH
- hydrofobní a hydrofilní interakce MeSH
- kultivační média MeSH
- lidé MeSH
- povrchové vlastnosti MeSH
- skot MeSH
- střeva mikrobiologie MeSH
- uhlík metabolismus MeSH
- zvířata MeSH
- Check Tag
- lidé MeSH
- skot MeSH
- zvířata MeSH
- Publikační typ
- časopisecké články MeSH
- práce podpořená grantem MeSH
- Názvy látek
- kultivační média MeSH
- uhlík MeSH
A total of 142 human and 88 calf bifidobacteria were isolated and identified; approximately 12 % of all isolated strains exhibited auto-aggregation (Agg) phenotype (Agg+). Properties considered to be predicting for their adhesion to intestine, i.e. auto-aggregation, and hydrophobicity were determined by xylene extraction in 18 human and 8 calf origin bifidobacteria. Co-aggregation of 8 human bifidobacteria with 8 clostridia was also evaluated. Agg varied between 16.3 and 96.4 %, hydrophobicity values ranged from 0 to 82.8 %. The strongest Agg and hydrophobicity were observed in B. bifidum and B. merycicum isolates. However, there were no statistically significant correlations between these two properties. Variability in the percentage of Agg and hydrophobicity was observed after cultivation of bifidobacteria on different carbon sources. All bifidobacteria showed co-aggregation ability with clostridia tested but there were remarkable differences depending on specific combinations of strains. The bifidobacterial strains with the highest ability to co-aggregate with clostridia were B. bifidum I4 and B. longum I10 isolated from infants; these strains gave also high values of Agg. Agg properties together with co-aggregation ability with potential pathogen can be used for preliminary selection of probiotic bacteria.
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