in Biological sciences (1990) and professor (2002), Corresponding Member of NAS RA (2006)[2] and Head of the Department of Biochemistry, Microbiology, and Biotechnology of Yerevan State University (2016–2020).
His research mainly concentrated on proton and other ion transport across the membrane, relationship with the proton-translocating two-sector ATPase (EC 7.1.2.2, FoF1-ATPase), and its role in particular molecular hydrogen production by various Hydrogenases.
Trchounian's research focused on the application of microbial hydrogenase systems in industrial hydrogen gas production.
He visited Martin-Luther University of Halle-Wittenberg, Halle, Germany for academic stay by DAAD fellowships.
In 2001–2002 he worked at the Ministry of Education and Science as the head of the Department of training of scientific and pedagogical personnel.