Usefulness of Urea as a Means of Improving the Solubility of Poorly Water-Soluble Ascorbyl Palmitate

Figure 4

PXRD patterns of ASCP/UR systems. (a) ASCP, (b) UR, (c) PM (ASCP/UR at a molar ratio of 1/12), (d) EVP1 (ASCP/UR at a molar ratio of 1/6), and (e) EVP2 (ASCP/UR at a molar ratio of 1/12). ●: specific peak of ASCP; □: specific peak of UR with a tetragonal crystal system; ■: specific peak of UR with a hexagonal crystal system.