“…The major bioactive components of rhubarb are phenolic compounds. Among them, sennosides (bianthrones) and anthraquinone glycosides are considered as the main purgative components, while free anthraquinones possess anti-inflammatory effects (Xiao et al, 1984), anticancer activity (Huang et al, 2007), nephric protection (Wang et al, 2009a), liver protection (Zhao et al, 2009) and antimicrobial activity (Wang et al, 2010). In addition, glucose gallates (Kashiwada, Nonaka, Nishioka, & Yamagishi, 1988), naphthalenes (Tsuboi, Minami, Nonaka, & Nishioka, 1977), and catechins (Kashiwada, Nonaka, & Nishioka, 1986) have been isolated from rhubarbs, and exhibit potential antioxidant and anticancer activities.…”