Librería Samer Atenea
Librería Aciertas (Toledo)
Kálamo Books
Librería Perelló (Valencia)
Librería Elías (Asturias)
Donde los libros
Librería Kolima (Madrid)
Librería Proteo (Málaga)
Recently, biomass-based polymers from renewable resources have received increasing focusowing to the depletion of petroleum resources. Natural polysaccharides such as cellulose,hemicellulose, and starch are among the candidates from natural resources for biomasspolysaccharide products including bioplastics. Although several kinds of neutral or anionicpolysaccharides such as chitin, alginic acid, hyaluronic acid, heparin, and chondroitin sulfateexist in nature, natural cationic polysaccharides are quite limited. Chitin is second only tocellulose as the most natural abundant polysaccharide in the world. Chitosan, the productfrom the N-deacetylatation of chitin, appears to be the only natural cationic polysaccharide.Therefore, chitin and chitosan due to their unique properties are expected to continue to offera vast number of possible applications for not only chemical or industrial use, but alsobiomedicine. The research history on chitins, one of the most major and abundant naturalpolysaccharides on earth, started around 1970. Since the 1980s, chitin and chitosan research(including D-glucosamine, N-acetyl-D-glucosamine, and their oligomers) has progressedsignificantly over several stages in both fundamental research and industrial fields.
