1. Schaumann BioEnergy GmbH, An der Muehlenau 4, D-25421, Pinneberg, Germany (E-mail: harald.lindorfer@schaumann.bioenergy.eu)
2. BOKU - University of Natural Resources and Applied Life Sciences, Vienna, Department for Agrobiotechnology, IFA-Tulln, Institute for Environmental Biotechnology, Konrad Lorenz Str. 20, A-3430, Tulln, Austria (E-mail: carmen.perez@boku.ac.at; christoph.resch@boku.ac.at; roland.kirchmayr@boku.ac.at)