Fig. 1

Percentage of inhibition of acetylcholinesterase (a) and butyrylcholinesterase (b) activity at different concentration of V. roxburghii extracts and the reference standard donepezil or galantamine. Standard was used for comparison. Results represent mean ± SD (n = 3, (P < 0.05). PEF, petroleum ether fraction; CLF, chloroform fraction; EAF, ethylacetate fraction; AQF, aqueous fraction