1. Center of Excellence for Polysaccharide Research (Member of European Polysaccharide Network of Excellence) Institute for Organic Chemistry and Macromolecular Chemistry Friedrich Schiller University of Jena Humboldtstraße 10 D‐07743 Jena Germany
2. DuPont Industrial BioSciences 200 Powder Mill Road Building E353 Wilmington DE 19803 USA