Table 3.

Classification of natural polymers according to their structure [47,48].

Polysaccharides	Proteins
Alginate	Collagen
Starch	Gelatin
Cellulose	Silk
Chitosan	Fibrin
Cyclodextrin	Albumin
Dextran
Gum polysaccharides
Pectin
Pullulan
Heparin
Chondroitin sulfate