When the moisture exceed 19.4 % , the amorphous region of starch granules , which has w ( H-2O ) > 19.4 % , was in a rubbery state and the crystal region contributed the pattern only .
当w（水）>19.4%时，淀粉颗粒中的无定型区域处于橡胶态，其X射线衍射图形仅由微晶区域形成；
rubbery state