White tail seven

[ ] B I Pinyin name 's Ni W I Q cabinet
[ alias ] India rhubarb, rhubarb, Hill seven, rock seven oxtail
[ source ]
Medicine source: Polygonaceae plant root and rhizome of Rheum emodi.
Latin animal mineral name: Rheum emodi Wall.R.australe D.Don )
Harvest and storage of autumn: excavation of the roots, to the roots, wash, sliced, dried.
[ ] the original morphology
Erect perennial stout herb, high 70-100cm. Root stout, have rhizomes. Basal leaves broadly ovate, long 10-30cm, 15-25cm wide, apex obtuse, base cordate, papery, with 5 basal veins, glabrous above, under the mask of pilose, margin with low ripple, a long petiole; cauline leaves small; ocrea membranous, pubescent. Inflorescence paniculate, large, with 2-3 back branched, densely stiffly hairy and small protrusions; tepals 6, into the 2 round, oval, purplish red, long 2.5-3mm; pedicels with small protuberances, and a joint; stamens 9; disk underdeveloped; ovary with 3 ribs, style 3. Even the wings into achenes broadly elliptic or ovate-elliptic, apex retuse, base cordate, ca. 9mm, width of 7mm.
Located in Sichuan, Yunnan, Tibet and other places.
[ ] habitat distribution
Ecological environment : in an elevation of 3200-4300m thickets on slopes.
Resource distribution: seven Radix et Rhizoma Rhei white tail Emodi produced in Tibet, Lhasa, Shigatse, shannan. Produced from the sale.
[ character ]
Character identification of rhizome root class conical, cylindrical, length 4-20cm, diameter 1-5cm. Surface is reddish brown or grayish brown, longitudinally rugose. Section forming layer, Ray Smith, no star, red brown. The new section is bluish gray with purple. Gas micro, bitter taste, slightly astringent. Microscopic identification of rhubarb rhizome transverse and different points: no star ( abnormal vascular ) on 2-4 cells in a column, ray. The parenchyma cells contain calcium oxalate crystal starch granule and. Cluster crystal diameter 10-120 m, starch grains of simple-grain spherical diameter, 3-40 m, 2-4 particles by complex grains.
2 physical and chemical identification of take the powder 0.2g, plus 2.0ml in methanol, warm soaking for about 10 minutes, let cool, taking supernatant 10 U L, point to the filter paper, with 45% ethanol, extraction, drying, placed 10 minutes, the ultraviolet lamp ( 365nm ) under review, significant lasting bright purple fluorescence; pieces significant fluorescent purple.
[ ] the oxtail seven chemical composition of root and rhizome total anthraquinone 5.94%, among them with emodin ( emodin ), aloe emodin and chrysophanol ( aloe-emodin ) ( chrysophanol ) as the aglycone combined anthraquinone 5.66%, free type 0.28%, also containing rhubarb glycosides ( rhapontin ) and amount of tannin.
Pharmacological action [ ]
1 purgative effect of earlier reported that the goods without purgative effect, nearly have reported that this product also has good purgative effect, the mice 4 hours of semiliquid stool and rare ED50 were 0.160 1g / 10g body weight and 0.373 2G / 10g body weight, purgative intensity was significantly lower than the genuine rhubarb. But as in the 4h ED50 T semiliquid stool as a purgative speed indicator, is the product of purgative faster than genuine rhubarb ( this product for 80.1 minutes, the 98 ~ 182.9 minutes ). Such as the equivalent dose rare rate as indexes were compared, and the genuine rhubarb no difference.
Antibacterial effect of the extract of 2 Staphylococcus aureus bacteria concentration was 0.25%, the decoction of Staphylococcus aureus in the minimum inhibitory concentration of MIC is 250mg / ml ( paper ).
3 antiplatelet aggregation activity the product water extract on collagen induced platelet aggregation have a certain degree of inhibition. IC50 2.45mg / ml.
4 other roles in the water extract has gone degree of superoxide anion free radical activity effect. This product also contains anthraquinones component of emodin and chrysophanol, its pharmacological effects of rhubarb bar.
[ ] bitter taste; Gan; cold
[ function ] detoxification; bleeding shengji. Primary lung heat cough; sore throat; boils; bleeding; bleeding trauma
[ usage]: orally taken decoction, 9-15g; or leach liquor. External: fresh goods amount, trace and apply.
Excerpts from" Chinese Materia Medica" [ ]
http://chinese-herbal-medicines-directory.blogspot.com/