Identify the true and false asparagus

Asparagus, also known as asparagus price and angelica root, is the root tuber of asparagus, a lily price plant Every year in autumn and winter, but the quality of winter harvest is better After digging out the roots, clean the soil, remove the fibrous roots, separate them according to the size, boil them in boiling water or steam until the skin is easy to fall off Take it out and immerse it in clear water, remove the skin while it is hot, wash it, dry it with low heat, then it can be used as medicine It has the functions of Nourishing Yin, moistening dryness, clearing lung and reducing fire It is used to treat Yin deficiency and fever, cough and hematemesis, lung impotence, lung carbuncle, sore throat, thirst and constipation On the market, the dried root tubers of the same family plant, asparagus chinensis, are used to pretend to be asparagus Authentic tianmendong To be listed in the Pharmacopoeia, it has a long round spindle shape, plump middle part, tapering and blunt ends, 6-20cm long, 0.5cm-2cm diameter in the middle part, yellowish white to yellowish brown surface, oily and translucent, sometimes with fine longitudinal lines or grooves, occasionally with yellow brown skin that is not removed; the dry one is hard and brittle, the dry one is soft and sticky, and the cross-section is waxy , yellow white, translucent, with opaque white heart in the middle; smell the air slightly, taste the sweet and bitter taste The appearance of the fake product is spindle shaped, the root is thin and small, 2-8 cm long, 0.5-0.9 cm in diameter, the surface is yellow brown, and the remaining skin is brown; it is hard and brittle, easy to break, the section is white, some of it is empty shell; it also smells slightly, but tastes bitter, and has a tingling tongue Modern pharmacological research shows that tianmendong decoction has bacteriostatic effect on anthrax, a and B hemolytic streptococcus, diphtheria, pneumococcus, Staphylococcus aureus and so on, and has certain anti-cancer effect Although the fake and the real asparagus belong to the same family, they do not have the functions of asparagus and are not included in the Pharmacopoeia, so they can not be used as medicine instead of asparagus.