Compared with the teas we drink in our daily leisure time, Aidi tea is more like a kind of medicinal tea. Its taste may not be the taste we want to drink. The fragrance may not be enough, but there must be a lot of effective ingredients. It is a more practical one; if a child has a severe cough at home, you can try to give the child some dwarf tea. What are the effects and functions of dwarf tea and how to eat it?
Dwarf tea is an evergreen small shrub with a height of 10~30cm, the base is often creeping horizontally, dark red, and has slender adventitious roots. Stems are often single, cylindrical, purple-brown on the surface, and short glandular hairs. The leaves are alternate, often 3~7 clusters. The stem end leaves are whorled elliptical or ovate, 3~7cm long, 1.5~3cm wide, short pointed tip, wedge-shaped base, sharp serrated edges, sparsely glandular points on both sides , Light red underneath, hairy petiole densely covered with short glandular hairs in the middle vein. The inflorescence is nearly umbellate, with axillary or terminal calyx 5-lobed, corolla 5-lobed with glandular dots, white, with reddish brown glandular dots. Stamens 5, shorter than corolla lobes, and glandular dots on the back of the anther. Drupe globose, red when ripe, with black glands, with persistent style and calyx. Flowering from June to September, fruiting from August to December.
Antitussive effect Aidi tea decoction and its extract, catechin No. 1 have obvious antitussive effects on coughs caused by electrical stimulation of cat superior laryngeal nerves and mice caused by ammonia spray, and catechin No. 1 is particularly effective , May be the main cough suppressant ingredient of Aidi Tea. Its antitussive strength is equivalent to 1/4 to 1/7 of cocaine based on the dose, and it is intolerable even if it is administered to cats continuously for 23 days. It is speculated that the site of antitussive effect is in the center, possibly in the midbrain.
Expectorant and antiasthmatic effects Aidi tea decoction has obvious expectorant effects on mice by gavage (phenol red method), and the intensity of action is equivalent to that of platycodon grandiflorum. The effect of intraperitoneal injection is stronger, but it has no effect on rabbit eye conjunctiva. Obvious irritation, indicating that its expectorant effect may be produced by absorption. The effective ingredient of expectorant may be flavonoid glycosides. Gavage with catechin No. 1 has no expectorant effect and no obvious anti-asthmatic effect (guinea pig histamine spray method). Effect on Respiration Aidi tea has the effect of reducing the oxygen consumption of rat trachea-lung tissue. Chloranthin No. 1 acts on the enzyme system containing essential sulfhydryl groups, thus reducing tissue respiration, but the effect is not strong. Antiviral effect The decoction of dwarf tea has a certain inhibitory effect on Staphylococcus aureus and influenza virus (chicken embryo test). After the tannin is removed, the volatile oil and flavonoid glycosides lose their antibacterial effect. Although the volatile oil and flavonoid glycosides have antibacterial effects in vitro, it is difficult to reach an effective concentration in the body.