1. Christian-Doppler-Laboratory for Textile and Fiber Chemistry in Cellulosics, Research Institute for Textile Chemistry and Textile Physics, University of Innsbruck, Hoechsterstrasse 73, A-6850 Dornbirn, Austria
2. Division of Food Sciences, School of Biosciences, University of Nottingham, Sutton Bonington Campus, Loughborough LE12 5RD, U.K.