1 Institute for Biotechnology and Environmental Engineering, Ostfalia University of Applied Sciences, Wolfenbüttel, Germany. Electronic address: th.ahrens@ostfalia.de.
2 Institute for Biotechnology and Environmental Engineering, Ostfalia University of Applied Sciences, Wolfenbüttel, Germany. Electronic address: s.drescher@ostfalia.de.
3 Department of Natural Sciences, Klaipeda University, Klaipeda, Lithuania. Electronic address: olga.anne@ku.lt.