oligosaccharides and polysaccharidespeptidoglycan polysaccharideextracellular polysaccharidepolysaccharides includebacterial polysaccharidesstructural polysaccharideschitin polysaccharideprotein polysaccharidemushroom polysaccharidesstarch is a polysaccharideastragalus polysaccharideinulin polysaccharide