Corn starch was analyzed using organic SEC column GPC KD-806M with DMSO/DMF eluent containing LiBr. Adding LiBr in eluent can suppress the influence of ionic group like carboxyl group, which starch includes. Corn starch was dissolved at 80°C.
Column : Shodex GPC KD-806M (8.0mmID*300mm)
Eluent : 10mM LiBr in DMSO/DMF=75/25
Flow rate : 1.0mL/min
Detector : Shodex RI
Column temp. : 50°C