Progress in study of monoterpene compounds in grape and wine.

Monoterpene compounds are a kind of typical aroma components in grapes and wine,with both free and bound forms.This review focuses on progress of monoterpene biosynthesis pathway and the key enzyme-monoterpene synthase in grapes,classification of monoterpene compounds as well as the structure,content,research methodology of glycosidically conjugated monoterpenes in grapes and wine.Also,the prospect of monoterpenes research is suggested.