Wei yang currently works as a senior research fellow at the Department of Biochemistry, University of Turku. His research has focused on the study of flavonoids which has potential benefits for human health. Specifically, the researches focus on the qualitative and quantitative determination of complex proanthocyanidins(PAs), the influence of genetic background and growth environment (especially high latitude) on PAs accumulation, molecular modification of anthocyanins and biotransformation of flavonoid from Agricultural waste.