Shanzhanye, a famous Chinese medicine.
Alias red jujube leaf.
English name CrataegiFolium
The dried leaves of Crataegus pinnatifida, atzjidabge.var.majorn.e.br. or Crataegus pinnatifida. of Rosaceae.
Plant morphology 1. Crataegus pinnatifida: deciduous trees, up to 6m high. Branches are1~ 2 cm long, or spineless. Simple leaves alternate; The petiole is 2 ~ 6 cm long; Leaf blade broadly ovoid or triangular ovoid, sparsely rhomboid ovoid, 6 ~12 cm long and 5 ~ 8 cm wide, with 2 ~ 4 pairs of pinnate lobes, tapering at the apex, broad wedge-shaped at the base, shiny on the top, pubescent along the veins below, and irregular double serrations at the edge. Corymb, about 4-6 cm in diameter; Calyx tube campanulate, 5-dentate; Corolla white, about 1.5 cm in diameter, 5 petals, obovate or suborbicular; Stamens ca. 20, anthers pink; Pistil 1, ovary inferior, 5-loculed, style 5. Pear fruit is nearly spherical, with a diameter of 2.5 cm, deep red, with yellow and white spots, sepals falling off late, leaving a round depression at the apex; Nucleus 3 ~ 5. The outward side is slightly angular, and the inward sides are smooth. The flowering period is from May to June, and the fruiting period is from August to1October. 2. Crataegus pinnatifida: This species is very similar to Crataegus pinnatifida, but the fruit shape is smaller, with a diameter of1~1.5 cm; The leaves are also small and deeply divided.
Distribution of origin: Crataegus pinnatifida is cultivated in North China, Shandong, Jiangsu, Anhui, Henan and other places. Crataegus pinnatifida was born in the stream, valley, forest edge or bushes at an altitude of100 ~1500m. Distributed in Northeast China and Inner Mongolia, Hebei, Shanxi, Shaanxi, Shandong, Jiangsu, Zhejiang, Henan and other places. It is also cultivated near plain villages.
Harvesting and processing, harvesting in summer and autumn, and drying.
Characteristics of medicinal materials Most of this product has been broken, and the intact one is broadly oval after unfolding, with a length of 6 ~12cm and a width of 5 ~ 8cm, green to brownish yellow, a tapered apex, a wide wedge-shaped base with 2 ~ 6 pinnate lobes and sharp double serrations at the edge. Petiole 2 ~ 6 cm long, stipules ovoid to ovoid-lanceolate. Slight gas, astringent taste, slightly bitter.
The taste is flat and sour. Meridian of liver.
Efficacy and function: promoting blood circulation, removing blood stasis, regulating qi, dredging veins, removing turbidity and lowering blood lipid. It belongs to the category of blood-activating and blood-stasis-removing drugs.
Clinical application: decoction, 3 ~10g; Or make tea and drink. External use: appropriate amount, decocted and washed. Used for qi stagnation and blood stasis, chest pain, chest distress, palpitation, amnesia, dizziness, tinnitus and hyperlipidemia.
Pharmacological research has anticoagulant and hypolipidemic effects.
Chemical constituents This product contains quercetin, hyperoside, vitexin rhamnoside, 2α, 3β, 19α- trihydroxyursolic acid, ursolic acid, hawthorn a, hawthorn b, hawthorn c, hawthorn d and other ingredients.
The use of taboos is not clear.
Compatibility prescription ① Treatment of hypertension: hawthorn leaves, decoction instead of tea. (Shaanxi Chinese Herbal Medicine)
Tips for decocting drugs
The quality of traditional Chinese medicine decoction is closely related to the selected decocting device. It is still better to use casserole now, because the material of casserole is stable and will not react chemically with the pharmaceutical ingredients, and its heat transfer is even and mild, which is one of the reasons why it has been used since ancient times. In addition, enamel pot, stainless steel pot and glass frying pan can also be selected. However, iron pots and copper pots cannot be used, mainly because the chemical properties of iron pots and copper pots are unstable and easy to oxidize. When decocting medicine, it can react with chemical components contained in traditional Chinese medicine. For example, it can generate iron tannic acid with tannins to deepen the color of the liquid medicine. It can form insoluble polymer with flavonoids. It can form salts with organic acids. All these will affect the quality of decoction and directly affect the clinical efficacy of traditional Chinese medicine decoction.