What is Chuanxiong?

Chuanxiong: Chuanxiong English name: Chinese herbal medicine This product is the dried rhizome of Chuanxiong. Umbelliferae. In summer, when the nodes on the stem are prominent and purple, the sediment is dug, dried in the sun, and then the fibrous roots are removed. Characteristics this product is an irregular nodular fist-shaped mass with a diameter of 2 ~ 7 cm. The surface is yellow-brown, rough and dry, with many parallel raised knuckles, concave round stem marks on the top, and many nodule root marks on the lower side and knuckles. Solid, not easily broken, yellowish white or grayish yellow, scattered with yellowish brown oil chambers, forming wavy ring patterns. Strong smell, bitter and pungent taste. The tongue is slightly numb and sweet. Identification (1) The cross section of this product: the cork layer is 10 multi-row cells. The cortex is narrow, the root vascular bundles are scattered, and the cambium is obvious. The phloem is wide, and the cambium is annular or irregular polygon. The xylem vessels are polygonal or quasi-circular, mostly single row or "V" shape, with occasional wood fiber bundles. The pulp is bigger. There are many oil chambers scattered in the parenchyma, which are round, oval or irregular, yellow-brown, and the oil chambers near the cambium are small and gradually expand outward; The parenchyma cells are rich in starch granules, and some parenchyma cells contain calcium oxalate crystals, which are round blocks or cluster crystals. The powder is yellowish brown or grayish brown. There are many starch granules, which are oval, oblong, quasi-round, oval or kidney-shaped, with a diameter of 5 ~ 16 micron and a length of about 2 1μm, and the umbilicus is punctate, long slit or herringbone. Occasionally it consists of 2 ~ 4 scores. Calcium oxalate crystals exist in parenchyma cells, which are round, massive or clustered crystals with a diameter of10 ~ 25μ m. Cork cells are dark yellow-brown, often multilayer, polygonal in surface and thin in wall. The oil chamber is mostly damaged, and occasionally oil chamber fragments can be seen. The secretory cell wall is thin and contains more oil droplets. Catheters are mainly threaded catheters, and there are also reticulated and stepped catheters with a diameter of14 ~ 50μ m. Some thickened walls of the threaded catheters are connected with each other, similar to reticulated threaded catheters. (2) Take 65438+0g of this product powder, add 5ml of petroleum ether (30 ~ 60℃), stand for 65438±00h, shake from time to time, stand, take 65438+0ml of supernatant, evaporate, add 65438+0ml of methanol to the residue to dissolve it, and then add 2% methanol solution of 3,5-dinitrobenzoic acid. (3) Take 65,438+0g of this product powder, add 20ml of ethanol, heat and reflux for 65,438+0h, filter, evaporate the filtrate, and add 2ml of ethyl acetate to the residue to dissolve it, which will be used as the test solution. In addition, take 65438 0 g of Chuanxiong, and prepare the control medicinal solution by the same method. According to the thin-layer chromatography test (Appendix ⅵ b), absorb the above two solutions 1 ~ 2μ l, respectively, and spot them on the same silica gel G thin-layer plate, using n-hexane-ethyl acetate (9: 1) as the developing agent, unfold, take them out, dry them, and examine them under an ultraviolet lamp (365nm). In the chromatogram of the test sample, fluorescent spots with the same color appear at the positions corresponding to the chromatogram of the control medicinal materials. Check that the total ash content shall not exceed 6.0% (Appendix ⅸ k). Processing to remove impurities, separating size, slightly soaking, cleaning, fully wetting, slicing and drying. Sexual taste and pungent-warm meridian tropism. Hepatobiliary pericardium meridian Indications: promoting blood circulation and qi circulation, expelling wind and relieving pain. Used for irregular menstruation, amenorrhea, dysmenorrhea, abdominal pain, chest and hypochondriac tingling, traumatic swelling and pain, headache and rheumatic joint pain. Usage and dosage: 3 ~ 9g. Store in a cool and dry place to prevent moths.