A 20-mg sample of starch was dispersed in 5 ml of 50 mM LiBr in 90% DMSO (HPLC grade, Sigma Chemical Co., St. Louis, MO) at 90 C for 2 h on a stirrer-heater module, followed by stirring for
24 h using a magnetic stirrer at room temperature. Dispersed samples were centrifuged for 15 min at 13,500g. The supernatants were filtered through 0.45-lm nylon syringe filters, and then
1-ml samples were injected into the SEC-MALLS-RI system that