What is the linkage for starch?

Starch is a polysaccharide composed of glucose units linked primarily by α(1→4) glycosidic bonds. In addition to these linear chains known as amylose, starch also contains branched structures called amylopectin, which have α(1→6) glycosidic bonds at the branching points. This combination allows starch to serve as an efficient energy storage molecule in plants.