Despite their like origins and close M Ws,the starches are of considerable differences in M W and dispersity,the M W of tuber starch being the greatest.

• 即使不同来源的同种淀粉样品，它们重均分子量虽很接近，但其分子量分布和分散度差异也很大。在各类淀粉中以块茎类淀粉的分子量最大。