Bielefeld University, Faculty of Technology, Fermentation Engineering, PO-Box 100131, 33501 Bielefeld, Germany. rieicp@gmail.com|Bielefeld University, Faculty of Technology, Fermentation Engineering, PO-Box 100131, 33501 Bielefeld, Germany. rieicp@gmail.com|Bielefeld University, Faculty of Technology, Fermentation Engineering, PO-Box 100131, 33501 Bielefeld, Germany. rieicp@gmail.com|Bielefeld University, Faculty of Technology, Fermentation Engineering, PO-Box 100131, 33501 Bielefeld, Germany. rieicp@gmail.com