Final concentrations of Y-27632, substrate and ATP, in 10 mL
enzymatic reaction were 150 nM, 700 nM and 70 mM, respectively.
The concentration of SA-XL665 in final volume of 20 mL
was 43.75 nM. The herbal extracts were tested at a 50 mg/mL in
the enzymatic reaction. A vehicle control for 2.5% DMSO was
tested to check the interference of DMSO in the assay. Initial
screening was performed in duplicate; whereas IC50 of herbal
extracts and standard were tested in triplicates