Method for evaluating the effects of a composition comprising microorganisms on intestinal microbiota

The present invention relates to a method for determining the probiotic/paraprobiotic activity of a composition comprising microorganisms, in particular bacteria, said method being based on evaluating, by metagenomic analysis, the qualitative and/or quantitative change in faecal microbiota following intake of the composition. Moreover, the present invention relates to a kit for carrying out said method.