Leda R. Castilho - Cell Culture Engineering Laboratory, Chemical Engineering Program - CPPE, Federal University of Rio do Janeiro, Brazil

Angela Maria Moraes - School of Chemical Engineering, Department of Biotechnological Processes, State University of Campinas, Brazil

Elisabeth F. P. Augusto - Institute of Technological Research of the State of Sao Paulo, Brazil

Michael Butler - Department of Microbiology, University of Manitoba, Canada