Table 3.
In-vitro anti-platelet aggregation activity of the ethanol extract and its subsequent organic solvent fractions of root of Arctium lappa L

Samples (mg/mL) Amplitude (ohm) Slope Area under Relative Aggregation (%)
DMSO 14 4 94.7 100.0
Aspirin (0.5) 5 1 21.7 22.9
Aspirin (0.25) 8 2 56.4 59.5
Ethanol ex1)(0.25) 6 1 47.6 50.3
Hexane fr2)(0.25) 4 0 21.0 22.2
Ethylacetate fr (0.25) 2 0 11.4 12.0
Butanol fr (0.25) 8 1 37.5 39.4
Water residue (0.25) 8 1 43.2 45.6
extract
fraction.
Data are presented as relative clotting time based on solvent control (x control). The thrombin time (TT), prothrombin time (PT) and activated partial thromboplastin time (aPTT) of solvent control (dimethylsulfoximide) were 24.0 sec, 18.6 sec and 40.5 sec, respectively. Different letters within a column differ significantly (p<0.05)