Esterification of polysaccharides Polysaccharide esters (Cellulose and starch) are among the first polymeric materials applied commercially. The way of producing these technically relevant derivatives mainly the carboxylic acid esters of C2 to C4 acids have not been changed significantly during their history of manufacture. The investigation of new acylation methods and strategies of analysis was revived during the last decade by the search for tailored biocompatible material for specific fields of application e.g. biotechnology sensor technique and medicine. Unconventional solvents were developed for completely homo geneous acylation reaction applying state of the art techniques of modern organic chemistry for polysaccharide modification. This book will provide a first comprehensive summary of acylation methods in a very practical manner. This book provides a first comprehensive summary of acylation methods in a very practical manner. The coverage includes new developments not yet summarized in book form and reviews spectroscopic methods in particular FTIR and NMR spectroscopy including two dimensional methods.