Bitter eggplant

Bitter eggplant

(pharmacology of traditional Chinese Medicine)

[source] it is the fruit of Solanaceae.

[plant morphology] a thousand year old heart

Perennial creeping herbs or subshrubs, about 2.5 m long. Young stems hairy or subglabrous. The leaves are alternate, ovate elliptic, 4-9 cm long and 2-5 cm wide, apex long and pointed, base heart-shaped and downward, entire or base 2-lobed in halberd shape, with fine hairs scattered on both sides and dense along veins; petiole 2-3.5 cm long, with fine hairs. Cyme terminal, or opposite to leaves at the end of branches, total pedicel slender, about 3 cm long, with thin hairs; petiole 5-10 mm long, glabrous; calyx funnel-shaped, sepals 5, ovate; corolla purple or white, lobes 5, reflexed downward, ovate or oblong lanceolate, apex pointed, base with green dots 2, outside with fine hairs; stamen 5, inserted at corolla orifice, filaments very short and smooth Pistil 1, ovary ovate, 2-locular, style slender, stigma small, hemispherical. Berries ovate or globose, red when ripe. Seeds white, oblate, small. The flowering period is from July to September.

Grow roadside and mountain grassland. It is distributed in most parts of the country.

The whole herb of this plant (Solanum lyratum) is also used for medicine. Please refer to the special section for details.

[collection] harvest in autumn when the fruit is ripe.

[chemical constituents] immature fruits contain a variety of steroidal alkaloids, including α -, β -, γ 1 -, γ 2 - and δ - solanine, solanine, solanine, solanine, solanine, solanine, lycopene, solanine and so on. Among them, lycopene or shuyangquan alkaloid was the main component, and solamine was the main component at the beginning of ripening. The total amount of these alkaloids increased with the growth of the fruit. When the fruit began to turn red and mature, the content began to decrease, and almost disappeared after maturity. β - solanine has anti-tumor effect on mouse sarcoma-180. Secondly, the contents of tigogenin and yamogenin in immature and mature fruits were basically the same. In mature fruits, there were 3,4-dehydro-tomato-aldehyde-16, lycopene and leucopoietin.

In addition, reducing sugar 31.55%, oil 0.9603-9.157% and a small amount of tartaric acid and citric acid were also contained in the fruit.

[pharmacological action] for the pharmacological action of alkaloids contained in Solanum nigrum, please refer to "Solanum nigrum" and "Solanum lyratum".

[function indications] pharmacology of traditional Chinese medicine: "it is diuretic, neuralgia and detumescence medicine. "