Poor dietary habits have been associated with dysbiosis and microbial imbalance in pregnant women. Such imbalances can pose health risks during pregnancy. This study aimed to explore the impact of Polygonati Rhizoma on the gut microbiota of pregnant women through In vitro simulated fermentation. Interestingly, significant differences in microbial community richness and structure were found between the control and the treatment with Polygonati Rhizoma. Analysis of composition and variability indicated that the treatment with Polygonati Rhizoma group showed higher levels of Lactobacillus and Bifidobacterium, but lower levels of Parabacteroides and Lachnoclostridium. The study also investigated specific genera differences between groups using the co-occurrence network analysis and their correlations with microbial metabolites by the redundancy analysis (RDA), Mantel-test network heatmap, and heatmap highlighting the relationships among gut microbiota, short-chain fatty acids (SCFAs), and gases in the absence or presence of Polygonati Rhizoma supplementation. Functional predictions from BugBase phenotype prediction indicated changes in potentially pathogenic and aerobic bacteria in Polygonati Rhizoma supplementation. Overall, the findings provide valuable insights into the influence of Polygonati Rhizoma on the gut microbiota in pregnant women associated with poor dietary habits.
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