Recent developments of starch granular ultrastructural models:From cluster structure to blocklets

The two main hypotheses,the cluster structure and the blocklets,regarding the starch granule ultrastructure were gathered and considered comprehensively in this paper.The starch molecules such as amylopectin,amylose and intermediate materials,the non-starch molecules such as bound phosphates and lipids,and the crystal dimensions etc.,their roles were demonstrated in the architectures of blocklet and granular ultrastructure.