Microbial transformation of resveratrol (1),trans-3,4',5-trihydroxysti
lbene, was studied. Preparative scale biotransformation of 1 with whol
e-cell suspensions of Bacillus cereus UI 1477 resulted in the producti
on of metabolite 2 which was identical in all respects to an authentic
sample of piceid, resveratrol 3-O-beta-D-glucoside.