2 English reference Franzenbach rhubarb roots and rhizomes [Xiangya Medical Dictionary]
3 "Dictionary of Traditional Chinese Medicine" Shanda Huangshan rhubarb is the name of traditional Chinese medicine, which comes from "Materia Medica". It is an alias of Rumex recorded in Notes on Materia Medica [1].
3. 1 Rhubarb Alias: Rhubarb, Codonopsis pilosula, Sheep's Foot [2]
3.2 Source and place of origin The root or whole grass of Rumex humilis of Polygonaceae. It is distributed in most areas of China [2].
3.3 Taste sour, bitter and cold [2].
3.4 Functions: cooling blood, detoxicating, relaxing bowels, diuresis and killing insects [2].
1. Treat hematemesis, hematochezia, internal hemorrhoid bleeding, dysentery, constipation, gonorrhea, urinary tract obstruction and conjunctival congestion. Decocting: 9 ~ 15g [2].
2. Treating scabies, scabies, neurodermatitis, eczema, sweat spots and applying juice; Tinea, vinegar grinding [2].
3.5 Chemical constituents include chrysophanol, emodin, chrysophanol glycoside, hyperoside, tannin, etc. The fruit contains quercetin and hyperoside. The whole grass also contains nepotin, vitexin, peach glycoside, acidic potassium oxalate, tartaric acid, vitamin C and so on [2].
3.6 Pharmacology Water extract has inhibitory effect on some common pathogenic fungi in vitro [2].
4 "Chinese Materia Medica" Alexander Huang 4. 1 from "Handbook of Chinese Herbal Medicine in Common Use in Northeast China".
4.2 Pinyin name Shān Dài Huánɡ
4.3 Aliases of Rhubarb, Tai Huang, Huang Tu, Huang Yu, Zihuang, Beidahuang, Rhubarb, Gexigen, Wild Rhubarb, Zizyphus jujuba, Huanggu Egg, Bitter Rhubarb, North China Rhubarb, Huang Qi and Huang Zhuang.
4.4 Source: Roots and rhizomes of Rheum palmatum of Polygonaceae.
Latin plant and animal mineral name: rhubarb.
Harvest and storage: digging in autumn, slicing and drying.
4.5 primitive perennial herbs, up to1m. The rhizome is thick and the surface is yellow-brown. Stems are stout, erect, glabrous, usually unbranched and hollow. Basal leaves have long stems; Leaf blade oval to ovoid, long 10 16 cm, blunt tip, heart-shaped base, wavy edge, slightly hairy lower part; Cauline leaves with short petiole or sessile, stipules long oval, dark brown, stipe. Panicle is an epiphyte with small flowers, mostly white and green; Bracts are small and fleshy, with 35 small flowers inside; There is a joint below the middle of the pedicel; Tepals 6, ovoid, 2-whorled, outer whorl 3 thick and small; Stamens 9; Ovary triangular-ovate, style 3. Achenes 3-angled, winged, heart-shaped at base, with persistent perianth. Flowers bloom in summer.
4.6 Habitat distribution ecological environment: born on slopes, crevices and grasslands.
Distribution of resources: distributed in Northeast China, North China and Hubei.
4.7 Character identification Roots and rhizomes are irregular cylindrical, with thick upper end and slightly thin lower end, with a length of 5 10cm and a diameter of 1.55cm. Most of the cork has been scraped off, and the surface is reddish brown and yellow, without horizontal stripes, and it is firm and light. There are no stars in the cross section, but there are thin and straight reddish-brown light. The new section is yellow to brownish red and blue-purple fluorescence under ultraviolet light. Slight breath, bitter taste.
Microscopic identification of roots and rhizomes is different from that of rhubarb: the ray cells are 1, and the parenchyma cells of this product contain calcium oxalate clusters and starch granules. The cluster crystal diameter is 1785μm, and the starch particle diameter is 317 μ m.
Physical and chemical identification The new section of this product shows blue-purple fluorescence under ultraviolet lamp.
4.8 The roots and rhizomes of rhubarb contain total anthracene1.1%,in which emodin and chrysophanol are used as aglycones, combined anthracene 1.05%, free anthracene 0.06%, and rhubarb glycoside.
4.9 Pharmacological effects of rhubarb 1. Antioxidant effect The water extract of this product has a strong anti-superoxide anion free radical effect, which is stronger than three genuine rhubarb and other non-genuine rhubarb. The edible rhein (that is, rhein) contained in it also has a strong antioxidant effect [1].
2. Anti-platelet aggregation effect The water extract of this product has a weak inhibitory effect on human platelet aggregation induced by collagen, and its IC50 is 0.30 mg/ml [2].
3. Other functions This product has no diarrhea [3] and contains anthraquinones.
4. 10 tastes bitter; Sexual apathy
4. 1 1 meridian stomach meridian; Large intestine meridian
4. The function of12 is mainly used for purging heat and detoxifying; Cooling blood and removing blood stasis. Main damp-heat jaundice; Dysentery; Amenorrhea abdominal pain; Hematemesis; Bleeding; Traumatic blood stasis; Carbuncle, swelling and furuncle; Oral erosion; Burns and scalds
4. 13 rhubarb oral administration and dosage: decoction, 310g; ; Let's grind it. External use: appropriate amount, ground and sprinkled; Or get dressed.
4. 14 pays attention to "medicinal plants in desert areas of China", which is not suitable for people with weak constitution before and after pregnancy.
4. 15 Various discussions 1. Handbook of commonly used Chinese herbal medicines in Northeast China: purging excess heat, breaking stagnation and promoting blood circulation. Treat jaundice, constipation, amenorrhea, carbuncle, furuncle, burn and scald. 2. "Inner Mongolia Chinese Herbal Medicine": purging excess heat, dredging stool, breaking stagnation and removing blood stasis. Strictly use raw materials, stir-fry slowly and stir-fry charcoal to stop bleeding. Treat heat stagnation, mumps, internal and external carbuncle, traumatic injury, soup fire injury, blood stasis, swelling and pain, hematemesis and epistaxis.
4. 16 extract