The invention belongs to the field of
plant extracts and relates to a Gansu Longnan
Zanthoxylum Bungeagum Maxim extract component with an
anesthetic action and preparation and detection methods thereof. The extract is prepared by adopting the following methods: (1) crushing pericarpium zanthoxyli, baking the pericarpium zanthoxyli
powder in a baking oven, then, adding a 50%-60%
acetone aqueous solution into the baked pericarpium zanthoxyli
powder, carrying out water-bath
reflux extraction, recovering
acetone from the extract, thereby obtaining total extract concretes of the pericarpium zanthoxyli; (2) dissolving the obtained total extract concretes of the pericarpium zanthoxyli in a
mixed solution of
chloroform and
methanol, which are in the ratio of 50 to 5, with stirring under water-bath conditions, carrying out
filtration, carrying out depressurized concentration on the filtrate in water bath, and then, carrying out column-
chromatography separation; (3) carrying out column-
chromatography separation by using D101B-type macroporous adsorption resin, carrying out water-washing on 4BV to 6BV so as to remove impurities, carrying out eluting on 7BV to 9BV with an eluant, of which the ratio of
ethyl acetate to
acetone is 100 to 5, at the flow velocity of 2BV / h to 4BV / h, collecting eluate, concentrating the eluate, and carrying out
drying, thereby obtaining the extract, wherein the ratio of
diameter to height of a resin column is 1 to (7 to 9), and the
sample volume is 6BV to 8BV.