Table 1.

Bioavailability of polyphenols in human plasma. EGCG—epigallocatechins Gallate; EC—epicatechins; Conc.—concentration.

Polyphenols	Plasma Conc. (Cmax)	Half-Life (T1/2)	Quantities	Food Source	Ref.
Quercetin	0.3–0.75 µmol/L	0.6 h	80–100 mg	Onion	[39]
EGCG and EC	0.1–0.7 μmol/L	1 h	90–150 mg	Green tea	[40]
Epichatechin	0.25–0.7 μmol/L	2 h	70–165 mg	Cocoa	[41]
Catechin	0.09 μmol/L	1 h	35 mg	Red wine	[42]
Hesperetin	1.3–2.2 μmol/L	5–7 h	130–220 mg	Orange	[43]
Naringenin	6 μmol/L	5–7 h	200 mg	Grapefruit	[44]
Anthocyanins	97.4 nmol/L	1.11 h	110–200 mg	Elderberry extracts	[45]
Lignan	30 nmol/L	9–24 h	25 mg	Linseed	[46]
Isoflavones	1.4–4 μmol/L	6–8 h	50 mg	Soy	[47]