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Views: 0 Author: Site Editor Publish Time: 2021-12-20 Origin: Site
Aster is also called Qingyuan, Ziqian, Xiaozhu, etc.; Aster of the Compositae family is a perennial herb with an obliquely rising
rhizome. The stem is upright, 40-50 cm high, sturdy, with fibrous dead leaf fragments at the base and often adventitious roots, with ribs and furrows, sparsely coarse hairs, and sparse leaves. The basal leaves are withered during the flowering period, oblong or elliptical spoon-shaped, and the lower part is gradually narrowing and long-stalked.
It is mainly produced in Hebei, Inner Mongolia and the three provinces of Northeast China. It is also distributed in North Korea, Japan and other places abroad. It usually grows in humid riverside areas. It is a blind Chinese medicine effect.
Perennial herb, with a rising rhizome. The stem is upright, 40-50 cm high, sturdy, with fibrous dead leaf fragments at the base and often adventitious roots, with ribs and furrows, sparsely coarse hairs, and sparse leaves. The basal leaves are withered during the flowering period, oblong or elliptical spoon-shaped, the lower part is narrowed and long stalked, and the stalk is 20-50 cm long and 3-13 cm wide. The tip is pointed or acuminate, and the edges have small pointed heads. Round or shallow teeth. The lower leaves are spoon-shaped oblong, often small, the lower part is tapered or narrowed into a broad-winged stalk, acuminate, and the edges are densely serrated except for the top; the middle leaf is oblong or oblong-lanceolate, sessile, Entire or shallowly toothed, upper leaves narrow; all leaves are thick and papery, with short shaggy hairs on the top, and short shaggy hairs that are slightly sparse but dense along the veins on the bottom; midribs are stout, opposite to 5-10. The veins protrude below, and the network veins are obvious.
There are many heads, 2.5-4.5 cm in diameter, arranged in the shape of a complex at the stem and branch ends; the peduncle is long, with linear bracts. Involucre hemispherical, length 7-9 mm, diameter 10-25 mm; involucre 3 layers, linear or linear-lanceolate, tip or round, outer layer 3-4 mm long, 1 mm wide, all Or the upper part is herbaceous, densely short-haired, the inner layer is 8 mm long and 1.5 mm wide, with broad membranous and purplish red edges, with herbaceous midribs. About 20 lingual flowers; tube length 3 mm, tongue blue-purple, 15-17 mm long, 2.5-3.5 mm wide, with 4 to multiple veins; tubular flowers 6-7 mm long and slightly hairy, lobes 1.5 Millimeters; style attached to slices lanceolate, 0.5 mm long.
The achene is obovate-oblong, purple-brown, 2.5-3 mm long, with 1 or at least 3 veins on each side, and the upper part is sparsely coarse. The crested hair is white or reddish, 6 mm long, and has many rough hairs of unequal length. Flowering period from July to September; fruiting period from August to October.
1. Expectorant effect: Chinese medicine believes that aster has the functions of warming the lungs, lowering the qi, eliminating phlegm and relieving cough. Experiments show that the water decoction has an expectorant effect but no antitussive and anti-asthmatic effects; benzene and methanol extracts also have an expectorant effect.
2. Antibacterial effect: Aster has a certain inhibitory effect on 7 kinds of Gram-negative intestinal pathogenic bacteria including Escherichia coli, Shigella, Proteus, Typhoid, Paratyphi, Pseudomonas aeruginosa and Vibrio cholerae in vitro; And has the effect of fighting pathogenic fungi.
3. Antiviral effect: Water decoction has obvious inhibitory effect on influenza virus in chicken embryo allantoic.
4. Anti-tumor effect: It is reported that the isolated epibromoterpene alcohol has anti-tumor effect on Ehrlich ascites cancer in mice; it is also reported that the cyclic peptide compounds isolated from the n-butanol extract of aster root have an effect on S180. Anti-tumor activity.
