The fact that the Mw/Mn ratio of GP-LRS3 and ZP-LRS3 were close to 1 confirmed that LRS was degraded during the process of autoclaving, formed molecular chains with a low degree of polymerization, and provided a number of chain ends able to easily form double helical structures. Given that the capacity of LRS molecules to move relative to each other was enhanced, they were thus more likely to form a stable double helix structure that increased the overall orderly level of the starch molecules.