Stomach microbiota

Bik EM, Eckburg PB, Gill SR, et al. Molecular analysis of the bacterial microbiota in the human stomach. Proc Natl Acad Sci USA. 2006 17 732-737. 

The stomach-associated bacterium Helicobacter pylori exemplifies co-evolution between microorganisms and humans. Patterns of H. sapiens migration from Africa across the globe can be traced from the strain diversity of this bacterial species. Comparing the human gut microbiota and microbiome worldwide is the only way, in principle, to reveal if there is a core set of gut microbial genes and organismal lineages that are shared by most, if not all, humans. 

Anthocyanins seem to be absorbed in the upper G1 (stomach and small intestine) mainly in the parent forms. In addition, they, themselves and/or their metabolites seem to be absorbed after a microbial action, and microbiota seems to constitute the main responsible factor for anthocyanin bioavailability. 

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