Glucan Biopolymers
Text Box: Starch is a homopolymer of glucose, linked together as either α-1,4-D-Glucan or α-1,6-D-Glucan.

Starch (Link to Structure)
Text Box: Cellulose is a homopolymer of glucose, linked together as β-1,4-D-Glucan.

Cellulose (Link to Structure)
Text Box: Hemicellulose is a mixed glycan polymer of several sugars including xylose, arabinose, glucose, mannose and galactose.

Hemicellullose (Link to Structure)
Text Box: Mixed-Linkage Glucan is a homopolymer of glucose, linked together as β-1,4-D-Glucan and β-1,3-D-Glucan. Text Box: Mixed-Linkage Glucan (Link to Structure)

Glucan biopolymers are polysaccharides of D-glucose monomers linked by glycosidic bonds. These biopolymers represent the primary storage and structural components of plants. Plant glucan biopolymers include Starch, Cellulose, Hemicellulose, Mixed-Linkage Glucan sometimes cross-linked with Lignin. The glucan biopolymers are vital as a renewable source of feed, food and biomass for liquid fuel production.