oligosaccharides and polysaccharidespeptidoglycan polysaccharideextracellular polysaccharidebacterial polysaccharidesstructural polysaccharideso specific polysaccharidechitin polysaccharideprotein polysaccharidemushroom polysaccharidesstarch is a polysaccharideastragalus polysaccharideinulin polysaccharide