Abstract
Neurobiological activity of the methanol extracts of thirteen Umbelliferae (Apiaceae) plants was tested against acetylcholinesterase (AChE), butyrylcholinesterase (BChE), and tyrosinase (TYR) using high-throughput screening technique. Although the extracts displayed none to low profile of inhibition against enzymes, the highest cholinesterase inhibition was observed with Heracleum platytaenium (32.52 ? 3.27 % for AChE and 46.16 ? 1.42 % for BChE) at 100 ?g mL-1. Since neurodegeneration is linked to oxidative damage, antioxidant potential of the extracts was searched through radical scavenging, metal-chelating capacity, and reducing power experiments and exerted modest levels of activity varying according to the method. The extracts had a better ability to scavenge nitric oxide radical (19.47 ? 2.09 % to 54.91 ? 1.98 %). Since these species are known to be rich in coumarins, our quantitative high-performance liquid chroatography (HPLC) analysis indicated presence of xanthotoxin, angelicin, isopimpinellin, bergapten, and pimpinellin in Heracleum platytaenium and angelicin and imperatorin in Angelica sylvestris var. sylvestris.
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