Full Text Available Ruellia
tuberosa L belongs to Acanthaceae family. In traditional medicine has
been used as diuretic, antidiabetic, antipyretic and antihypertensive,
and it also recently been incorporated as a component in a herbal tea in
Taiwan. This research aims to determine the antioxidant activity
of R. tuberosa leaf extract. Extraction of R. tuberosa leaf by
stratified maceration method using dichloromethana and methanol.
Methanol extract was partitioned by using ethyl acetate and n-butanol.
Antioxidant activity was tested by reduction of DPPH radical method and inhibition of the xanthine oxidase. The results show n-butanol extract has an antioxidant activity with reduction of DPPH radical and inhibition of the enzyme xanthine oxidase with IC50 value respectively 7.42 and 0.15 �g/mL.
