If anyone is interested I've uploaded the paper to the Full Members > Resource Sharing area. I can't post it in the general forums, but this way it should be fair use for research purposes.
Membership has other benefits, BTW.
The summary of the paper:
Resveratrol has attracted interest as a wine constituent that may reduce heart disease. Published
data on the molar absorptivity and chemical stability of cis- and trans-resveratrol have varied greatly.
Accurate values for UV absorbance for trans-resveratrol [UV ìmax (EtOH) nm () 308 (30 000)] and
cis-resveratrol [UV ìmax (EtOH) nm () 288 (12 600)] were determined and are used to improve
chromatographic quantitation methods. Trials conducted under a variety of commonly encountered
laboratory conditions show that trans-resveratrol is stable for months, except in high-pH buffers,
when protected from light. cis-Resveratrol was stable only near pH neutrality when completely
protected from light.
edited for gramer and speling
Edited by maxwatt, 28 January 2008 - 12:20 AM.