In vitro screening for acetylcholinesterase inhibition of Baliospermum montanum, Humboldtia brunonis Wall. var. raktapushpa and Pittosporum viridulum.

Ethanolic extracts of three medicinal plants collected from South India were analyzed for their activity towards acetylcholinestrase (AChE) enzyme. The AChE inhibition was measured spectrophotometrically. All the three species namely, Baliospermum montanum, Humboldtia brunonis Wall. var. raktapushpa and Pittosporum viridulum showed substantial inhibitory activity towards acetylcholinesterase with IC50 values, 137.5μg/ml, 128.7 μg/ml and 105.3μg/ml, respectively.