Table 5. Bacteria taxa with relative proportions correlating significantly with concentration of daidzein and daidzein metabolites.

Phylum	Family	Genus	Daidzein	DHdaidzein	S-(-)Equol	ODMA
Actinobacteria	Bifidobacteriaceae	Bifidobacterium		−0.559	0.179*
		Other		−0.410	0.438
	Coriobacteriaceae	Adlercreutzia			−0.451
		Collinsella			0.536ψ
		Slackia	−0.464
	Corynebacteriaceae	Corynebacterium		−0.409
	Micrococcaceae	Rothia			0.410ψ
	Other	Other				−0.401
Firmicutes	Clostridiaceae	Clostridium	−0.431
	Eubacteriaceae	Pseudoramibacter		0.398ψ
	Erysipelotrichaceae	Other				0.451
	Lachnospiraceae	[Ruminococcus]			−0.407
		Dorea				0.407ψ
	Peptostreptococcaceae	Unclassified	−0.438	−0.466
	Ruminococcaceae	Oscillospira				0.473ψ
		Other				0.407
		Ruminococcus				0.451
	Streptococcaceae	Lactococcus			0.402
	[Tissierellaceae]	Finegoldia				0.398ψ
		Peptoniphilus			−0.398ψ	0.466ψ
	Veillonellaceae	Dialister	0.524ψ
	Other	Other			0.401
Verrucomicrobia	Other	Other	−0.440			−0.398

Correlations calculated using the non-parametric Kendall’s tau measure and significant if p<0.05.

Full table of correlations with all isoflavone metabolites are available in Table S4.

*Correlation between Bifidobacterium and equol is not significant, reported here to illustrate the negative relationship between dihydrodaidzein and S-(-)equol.

^ψGenera not previously reported to be involved in isoflavone metabolism [7].

Groups listed as unclassified or other cannot be assigned to a genus at this time and therefore isoflavone metabolism is unknown.

DHdaidzein = dihydrodaidzein, ODMA = O-desmethylangolensin.