An isolated or non-naturally occurring micro-organism, wherein the micro-organism has an engineered operative metabolic pathway producing resveratrol, or an oligomeric or glycosidically-bound derivative thereof, wherein the engineered operative metabolic pathway produces:
- a) 4-coumaric acid from L-phenylalanine catalysed by a phenylalanine ammonia lyase and a cinnamate 4-hydroxylase expressed in the micro-organism or from tyrosine catalysed by a phenylalanine ammonia lyase or a tyrosine ammonia lyase expressed in said micro-organism;
- and
- b) 4-coumaroyl-CoA from 4-coumaric acid catalysed by a 4-coumarate-CoA ligase expressed in said micro-organism;
- wherein the micro-organism is cultured in a media with a carbon substrate and does not require an external source of phenylalanine, tyrosine, cinnamic acid or coumaric acid, and resveratrol is produced from the 4-coumaroyl-CoA by a resveratrol synthase expressed in the micro-organism.