Abstract
In this study, the inter-individual variability of antitussive effect of Farfarae Flos was observed, and then the Farfarae Flos treated mice were divided into the mice with good or poor antitussive effect. Then a UHPLC-Q TOF-MS method was developed and validated to quantify 13 fecal metabolites of Farfarae Flos, and the results showed concentrated differences between the two subgroups. The results of 16 S rRNA gene sequencing analysis showed that mice with good or poor antitussive effects were also different at the structure of gut microbiota in phylum and genus, as well as the related 6 pathways. In addition, the differential fecal metabolites of Farfarae Flos between the two subgroups were probably related with 5 bacterial that participating in the CQAs and flavonoids metabolism. This study explained the inter-individual variability of the antitussive effect of Farfarae Flos from the perspective of gut microbiota. However, the specific bacterial that participate in the metabolism of Farfarae Flos as well as the antitussive effects of Farfarae Flos need to be further validated.
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