Polyglycerol fatty acid ester contributes to the improvement and maintenance of water solubility of amorphous curcumin by suppressing the intermolecular interaction and the diffusion rate of curcumin

Kazuya Nagano; Tomohiro Nakao; Mariko Takeda; Haruna Hirai; Hikaru Maekita; Michiko Nakamura; Naoki Imakawa; Ayako Egawa; Toshimichi Fujiwara; Jian-Qing Gao; Keigo Kinoshita; Makoto Sakata; Masayuki Nishino; Takuya Yamashita; Takuya Yoshida; Kazuo Harada; Keisuke Tachibana; Takefumi Doi; Kazumasa Hirata; Hirofumi Tsujino; Kazuma Higashisaka; Yasuo Tsutsumi