Posted: Aug 23rd, '08, 15:40
i think i found something some time ago about plasma levels...i didnt save it...
i think it wasnt that much that was absorbed...
... i'll try to find it again.
edit: ok found something else(but requires purchase), a sort of meta-analysis of multiple types of flavonoids,
tea flavonoids all have very poor absorbtion & bioavailability in humans
the absolute bioavailability (in the rat) was 1-3% (low) for high doses of administered ECG.
also says that the ORAL bioavailability of tea flavonoids in humans is due to poor transport from intestine and very efficient elimination by conjugation (= "metabolized" in the liver very quick, before it reaches systemic circulation)
Absorption and metabolism of flavonoids
Free Radical Biology and Medicine, Volume 36, Issue 7, 1 April 2004, Pages 829-837
found something else, which mentions for most flavonoids that reach blood, their half life is 1-2h = it goes out quick unless you keep drinking tea (but then you get alot of water with it, so....)
i think it wasnt that much that was absorbed...
... i'll try to find it again.
edit: ok found something else(but requires purchase), a sort of meta-analysis of multiple types of flavonoids,
tea flavonoids all have very poor absorbtion & bioavailability in humans
the absolute bioavailability (in the rat) was 1-3% (low) for high doses of administered ECG.
also says that the ORAL bioavailability of tea flavonoids in humans is due to poor transport from intestine and very efficient elimination by conjugation (= "metabolized" in the liver very quick, before it reaches systemic circulation)
Absorption and metabolism of flavonoids
Free Radical Biology and Medicine, Volume 36, Issue 7, 1 April 2004, Pages 829-837
found something else, which mentions for most flavonoids that reach blood, their half life is 1-2h = it goes out quick unless you keep drinking tea (but then you get alot of water with it, so....)