Top Quality Radix Trichosanthis

It's a perennial herbaceous vine. Tuberous roots are transverse, thick, usually cylindrical or long spindle-shaped. Stems glabrous, angled; tendrils 2 ~ 3 divergent. Leaves Alternate, Leaf Blade broadly ovate-cordate or oblate-cordate. Male flowers 3 ~ 8 racemes, flowers in Upper 1 / 3; Bracteoles Rhombic-obovate; sepals linear, entire; Corolla White; female flowers solitary. Fruit broadly ovate-ellipsoid to globose. Seeds flattened, oblong, dark brown. Flowering period 6 ~ 8 months, fruiting period 9 ~ 10 months. Produced in the hillside, grass, forest edge semi-shady place. Distributed in southwest China, China-South Africa, South China and Shaanxi, Gansu and other places. In autumn and winter, pick, wash, remove fibrous roots, remove the skin, vertical section into 2 ~ 4 flap, thick and then cut into a number of sections or oblique drying. Or just dry it off. Irregular cylindrical, fusiform or clump-like; surface yellow-white or light brown-yellow, with Longitudinal wrinkles, fine root marks and a slight depression of the cross-long lenticels, some have yellow-brown skin residue. Solid, white or yellowish section, rich in pink, Yellow Xylem can be seen in cross section, slightly radial arrangement, and yellow striped xylem can be seen in longitudinal section. Odorless, slightly bitte。

Trichosanthin was isolated from TCMLIBicho-santhin，andα-hydrox-ymethylserine，aspartic acid，thrionine，serine，glutamic acid，threonine，glycine，valine，tyrosine，pheny-lalanine，histidine，lysine，arginine，ornithine，peptide，ribose，xylose，arabinose，glucose，galac-tose。

Sexual Taste Channel: micro-cold, sweet, micro-bitter. Channel of lung and stomach. Efficacy and function: clearing away heat and promoting body fluid, reducing swelling and discharging pus. It belongs to the category of heat-clearing and purging gunpowder under the subordinate of heat-clearing medicine. Pharmacological Study: trichosanthin injection has the effect of anti-early pregnancy by subcutaneous administration in rats. Trichosanthin injection on rats and mice with anti-cancer effect, there are anti-hiv, hypoglycemic effect. Trichosanthin preparation is clinically used to treat mid-term pregnancy, stillbirth, late abortion and other induced abortion.