Figure 9 Volcano plot for statistical analysis of fecal
differential metabolites. Note: Each point in the volcano plot
represents a metabolite, the abscissa represents the multiple change of
the group compared with each substance, the ordinate represents theP -value of the t-test , and the size of the scatter represents
the VIP value of the OPLS-DA model. The blue dots in the figure
represent the down regulated differential expression metabolites, the
red dots represent the up regulated differential expression metabolites,
and the gray dots represent the detected but not significantly different
metabolites. In addition, the top 5 qualitative metabolites are selected
and marked in the figure after sorting by P value.