Abstract
AbstractThe branching geometry of amylopectin according to chemical degradation studies has been combined with the knowledge of packing arrangement of double helices. The structural organization of the polyglucan chains in the crystalline amylopectin units can be described by an infinite periodic minimal surface, and it is closely related to the structure of high‐quartz with space group P6422. An important feature of the molecular packing is that the van der Waals distance between double helices is very similar to the length of a linkage formed by the α‐1,6‐glucoside branching. The physical properties of starch are finally discussed in relation to the proposed structure.
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