[Acetylation of Rehmannia glutinosa polysaccharides and antioxidant activity of acetylated derivatives]. - Li J; Zhang TT; Pu DT; Shi YJ; Zuo ZY; Liu CY; Chen Y; Jia XB; Zhao P; Feng L (Zhongguo Zhong yao za zhi = Zhongguo zhongyao zazhi = China journal of Chinese materia medica, 2022)