Quercetin

Quercetin

(Tang materia medica)

Another name: Red Dragon skin, Quercus bark (behind elbow), Quercus bark (Cui's main prescription).

[source] the bark of Quercus Fagaceae.

[plant morphology] Quercus (compendium), also known as "the book of songs", Quercus (Erya Guo Pu note), Golden Rooster tree, Quercus macrophylla (compendium), Quercus, Quercus macrophylla, Quercus.

Deciduous trees, up to 25 meters high, about 1 meter in diameter. Bark dark gray, deeply furrowed; branchlets stout, pale yellow or grayish yellow, covered with grayish yellow stellate pubescence. Leaves alternate, leathery or nearly leathery, broadly obovate to obovate cuneate, 10-20 cm long, or up to 30 cm wide, 6-13 cm wide or wider, margin with 4-10 pairs of deeply undulate teeth or deep lobes, base auriculate, sometimes cuneate, apex obtuse, dark green above, pubescent at first, glabrous behind, gray woolly hair and stellate hair below; lateral veins 4-10 pairs, straight to the end of teeth; petiole 2-6 pairs long Mm. The flowers are unisexual, monoecious; the male flowers are catkin, born in the axils of new branches, perianth with gray white villi, stamens 8-10; the female flowers are several, gathered on the young branches, ovary 3-locular, stigma 3-locular. Cupule large, cup-shaped, enclosing 1 / 2 of nut, scales lanceolate, imbricate arranged, brownish red, thin, revolute outward. Nuts ovate or elliptic, 1.5-2.5 cm long, glabrous. The flowering period is from May to June. The fruiting period is after October.

It grows on the sunny slope of mountain and becomes sparse forest. It is distributed in most parts of the country.

The leaves (Quercus leaves) and seeds (Quercus seed) of this plant are also used for medicine. Please refer to the special section for details.

[chemical constituents] the bark contains tannin 3.70-14.44%. The content of tannin in Fagaceae is 3.41-5.13%.

[nature and taste] Tang materia medica: "bitter taste. "

[function indications] it is used to treat ulcers, scrofula, dysentery, intestinal wind and lower blood.

① "Treatise on medicinal properties": "for the treatment of malignant sores, it is necessary to make Decoction and wash. "

② Tang materia medica: "decocting concentrated juice in water can eliminate poisonous insects and fistula. "

③ "Compendium": "stop red white dysentery, intestinal wind blood. "

[usage and dosage] oral administration: decocting soup, boiling cream or burning ash and grinding powder. External use: wash with boiling water or boil ointment.

[prescription selection] 1. To treat gangrene: burn the powder of quercetin, drink and take Fangcun dagger. (Qian Jin Fang)

② Treatment of lower part of the disease: beech bark, quercetin and boiling juice such as sticky sugar to guide. (behind the elbow)

③ Wash all the rotten sores: cut the bark of quercetin, three liters, take a bucket of water, boil five liters, use it cold in spring and summer, use it warm in autumn and winter. Wash the breast sores and various abortive sores, and apply ointment after washing. (red dragon soup)

④ Cure all fistula diseases: Quercetin peel, cut, five liters, eight liters of water, boil to make you cry, remove dross, then decoct into ointment, take jujube every day, and apply on the sore. It's better to eat alfalfa salt rice to help it, and take "Huang" as a measure. (Cui Shi Bian Yao Fang)

⑤ Treatment of pediatric scrofula: Quercetin, remove the coarse skin, cut, decoct, wash frequently. (Sheng Hui Fang)

⑥ Cure all red and white dysentery for a long time: dried ginger, quercetin (ginger juice fried five degrees) one or two. On two flavor, pound Luo for powder, each take two money dagger, hollow food before, warm rice drink. (dried ginger powder in Shengji Zonglu)

⑦ Treatment of red white dysentery: a jin of new quercetin, remove black skin, cut, with a bucket of water, decoct five liters, remove dross, extract and wine. (compendium)