Table 1. Metabolites of EGCG Fermentation with HFS Annotated by UHPLC-Orbitrap-MS.

ID	RT (min)	tentative identification	formula	monoisotopic mass	measured mass	Δmass (ppm)
M00	6.38	EGCGa	C22H18O11	458.08491	458.08481	0.22
M01	5.19	EGCa	C15H14O7	306.07395	306.07403	0.16
M02	2.43	gallic acida	C7H6O5	170.02152	170.02147	0.29
M03	2.80	pyrogallola	C6H6O3	126.03169	126.03168	0.08
M04	6.03	1-(3′,4′-dihydroxyphenyl)-3-(2″,4″,6″-trihydroxyphenyl)propan-2-ol	C15H16O6	292.09469	292.09460	0.31
M05	5.12	5-(3′,4′-dihydroxyphenyl)-γ-valerolactone	C11H12O4	208.07356	208.07346	0.48
M06	5.46	5-(3′,4′,5′-trihydroxyphenyl)valeric acid	C11H14O5	226.08412	226.08410	0.31
M07	13.12	4-phenylbutyric acid	C10H12O2	164.08373	164.08372	0.06
M08	5.85	3-(3′,4′-dihydroxyphenyl)propionic acida	C9H10O4	182.05791	182.05788	0.16
M09	7.07	3-(4′-hydroxyphenyl)propionic acida	C9H10O3	166.06299	166.06291	0.48
M10	8.28	3-phenylpropionic acid	C9H10O2	150.06808	150.06806	0.67
M11	4.36	2-(3′,4′-dihydroxyphenyl)acetic acid	C8H8O4	168.04226	168.04215	0.65
M12	5.87	2-(4′-hydroxyphenyl)acetic acida	C8H8O3	152.04734	152.04730	0.26
M13	9.20	phenylacetic acid	C8H8O2	136.05243	136.05243	0.00
M14	5.37	4-hydroxybenzoic acida	C7H6O3	138.03169	138.03167	0.14

^aConfirmed with authentic standards.