2001 - 2002 expert for food processing, import and production of compound feeding stuffs of an organic agriculture certification body
1999 - 2001 studies of oecotrophology at the University of Applied Sciences of Fulda, scientific assistance in several projects of the departments of food technology and oecotrophology
1997 - 1998 scholar of CDG in a project dealing with pepper trade in Indonesia
1992 - 1997 studies of food technology at the University of Applied Sciences of Fulda
