To investigate the interaction mechanism between flavonoids in dietary Dandouchi and intestinal microbiota.
This study employed an in vitro whole-biome gastrointestinal simulation system, with 16S rDNA sequencing for microbiota profiling, and high performance liquid chromatography-tandem triple quadrupole mass spectrometry for flavonoid metabolic transformation analysis. Finally, Spearman correlation analysis was used to analyze the correlation between the two.
Demonstrated that dietary Dandouchi significantly improved intestinal microbiota composition, increasing probiotic Bacteroides from 0.73% to 3.61% and Ruminiclostridium_9 from 0.20% to 0.94%, while reducing pathogenic Escherichia-Shigella from 17.59% to 11.39%.Regarding flavonoid metabolism, intestinal microbiota mediated an reduction in glycoside-type flavonoids (e.g., daidzin, glycitin) and a more pronounced decrease in aglycone-type flavonoids (e.g., butein, daidzein) (P<0.05). Correlation analysis revealed significant negative associations between Bacteroides and daidzin, and positive correlations between Parasutterella and naringenin (P<0.05).
Dietary Dandouchi modulates specific microbiota (e.g., Bacteroides, Parasutterella) to enhance flavonoid biotransformation, thereby improving bioactivity, providing a theoretical foundation for developing dietary Dandouchi-based microecological regulators.
| 科 Family | 属数 Number of genus | 种数 Number of species | 占总种数比例 Percentage of total species (%) | 属 Genus | 种数 Number of species | 占总种数比例 Percentage of total species (%) |
|---|---|---|---|---|---|---|
| 鹅膏菌科Amanitaceae | 2 | 11 | 5.26 | 鹅膏菌属 Amanita | 10 | 4.78 |
| 小菇科 Mycenaceae | 2 | 12 | 5.74 | 丝盖伞属 Inocybe | 5 | 2.39 |
| 多孔菌科 Polyporaceae | 8 | 14 | 6.70 | 蜡蘑属 Laccaria | 5 | 2.39 |
| 红菇科 Russulaceae | 3 | 23 | 11.00 | 小皮伞属 Marasmius | 6 | 2.87 |
| 小菇属 Mycena | 11 | 5.26 | ||||
| 光柄菇属 Pluteus | 5 | 2.39 | ||||
| 红菇属 Russula | 17 | 8.13 | ||||
| 栓菌属 Trametes | 5 | 2.39 |