Antioxidant and Anti-Cancer Potentials of Rheum emodi Rhizome Extracts

Table 3

Major phenolic compounds identified in the methanolic extract of R. emodi rhizome by HPLC.

Phenolic compounds	𝜆 (a) (nm)	ETR (b) (min)	RTR (c) (min)
β-Resorcylic acid	250	10.896	10.9
Daidzein-8-O-glucoside (puerarin)	250	19.703	20.1
Daidzein	250	63.828	64.1
(+)-Taxifolin	280	26.696	26.7
Quercetin	370	75.008	75.5
Flavonol	370	91.337	91.5

(a)Wavelenghth for determination.
(b)Analysis retention times.
(c)Reference retention times [21].