Test Method: HPLC

What is resveratrol:
Resveratrol (trans-3, 5, 4'-trihydroxystilbene), belongs to a class of polyphenolic compounds called stilbenes, found largely in the skins of red grapes and root of Polygonum cuspidatum Sieb. Et Zucc ( Japanese knotweed), is a component of Ko-jo-kon, an oriental medicine used to treat diseases of the blood vessels, heart and live...Resveratrol is a fat-soluble compound that occurs in a trans and a cis configuration (see figure 1). Both cis- and trans-resveratrol also occur as glucosides (bound to a glucose molecule).