1. Inst. of Bioprocess Engineering and Pharmaceutical Technology; Faculty of Live Science Engineering, University of Applied Sciences Mittelhessen; Wiesenstrasse 14 Giessen 35390 Germany
2. Fraunhofer Inst. for Molecular Biology and Applied Ecology (IME), Project group Bioresources; Giessen Germany
3. Inst. of Bioprocess Engineering and Pharmaceutical Technology, Faculty of Live Science Engineering, University of Applied Sciences Mittelhessen; Wiesenstrasse 14 Giessen 35390 Germany
4. Dept. of Chemical Engineering; Kansas State University; Manhattan KS 66506