Astragalus medicinal herbs identification: Aster, also known as barley and sable, is the root and rhizome of Asteraceae, which is mostly born in the mountains or riverside grassland. In May, the yellow purple and white flowers will be opened in the month of June, and the blackspots will be harvested. "Every year, spring and autumn can be excavated, remove the stems and leaves and the soil, and the roots of the roots are braided into small sorghum. The product is called "purple sable". . Its temperature, bitter taste, into the lungs, has the effect of warming the lungs, eliminating phlegm and relieving phlegm, often used to treat cold cough, wheezing, fatigue, cough, pus and blood, throat, dysuria, etc. The medicine. On the market, there are roots or rhizomes of the same plant, such as sable, which are pretending to be purple. Authentic purpura : The dried rhizome is round and round, with a length of about 2 to 6 cm and a diameter of about 1.5 to 3 cm. The top has a residue of the stem base and the petiole. There is often a root that is not removed at the bottom. There are many fine roots under the tufts, the surface of the roots is purple or grayish red; the texture is soft, not easy to break, the section is grayish white with purple edges; the smell is slightly fragrant, the mouth tastes sweet, slightly bitter. Counterfeit 滇紫滇 : It is the rhizome of burdock ginseng, which is irregularly block-shaped. There are many cylindrical fine roots at the lower end. The length is longer than the original, it is 7-15 cm. The surface is light brown or brownish yellow. It is solid and brittle. Broken, the folded section is slightly powdery; the smell is smelly, and the mouth tastes slightly bitter and cool. From the above characteristics, the authenticity of the purpura can be discerned. Modern pharmacological studies have shown that purpura has significant antitussive and antitussive effects, and its efficacy lasts for more than 4 hours; it has a certain inhibitory effect on various pathogenic bacteria. There are also studies that the non-sterols isolated from the purpura have a certain anti-cancer effect on Ehrlich ascites cancer, while the counterfeit purpura is the same plant as the authentic purpura, but does not have the above-mentioned effects of authentic purpura. Therefore, it is not a substitute for purpura.
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