Something I hadn't heard before in 3rd from last
paragraph, as regards persistence of the molecule
and the effect of light.

Things are looking up.

http://www.democratandchronicle.com/entertainment/dines/wine/ent_1641.shtml

"Creasy's tests show that resveratrol is preserved even in open wine, with
only a 3 percent reduction after 17 days sitting open on a counter at about
70 degrees or refrigerated at about 35 degrees. He believes that resveratrol
lasts longer in wine than in pill form because of the anti-oxidant properties
in wine. However, wine will lose its resveratrol if it is exposed to light,
so keep an opened bottle away from a window."