Xanthan Gum-a lyotropic, liquid crystalline polymer and its properties as a suspending agent. SciTech Connect. Salamone, J.C.; Clough, S.B.; Jamison, D.E.-01. Studies a variety of xanthan solutions of various polymer concentrations in the presence and absence of various salts under a polarized light microscope (100X) in order to test xanthan gum for liquid crystalline order.