Accumulation profile of nine constituents in different years old stage and parts of Rheum palmatum  L. by HPLC analysis
LI Huan1,HEI Xiao-bin1,LI Yi-min1*,LIU Zhi-jun2,ZHANG Hai-ying3,GAO Jing1,YAN Yong-gang1,ZHANG Gang1*
NATURAL PRODUCT RESEARCH AND DEVELOPMENT . 2019, (6): 923 -931 .  DOI: 10.16333/j.1001-6880.2019.6.001