Catalog 1 Pinyin 2 Pinyin name 3 Source 4 Original form 5 Habitat 6 Traits 7 Chemical constituents 8 Pharmacological effects of bay leaf 9 Taste 10 Functions 11 Usage and dosage of bay leaf 12 Excerpts Attachment: 1 Formulas using bay leaf in traditional Chinese medicine 2 Ancient books of bay leaf 1 Pinyin

yuè guì yè

2 Pinyin

Yuè Guì Yè

3 Source

Herbal Medicine

Latin name: Laurus nobilis L.

Harvesting and Storage: Harvested in fall, dried in the sun.

4 Original form

Evergreen tree, up to 912m high, with black-brown bark. Leaves alternate, leathery, long elliptic or lanceolate, about 611cm long, 24cm wide, apex acute, base cuneate, entire or slightly undulate, revolute, dark green, crushed with fragrance; leaf veins pinnate, elevated on both sides; petiole about 1cm long, purple. Umbels axillary, dioecious; flowers small, 34mm in diameter, yellow, involucral pedicel ca. 1cm, peduncle base with involucre; male tepals 4, obovate, apex obtuse-rounded; stamens 12, 3-numbered per whorl, anthers inwardly valvate; female tepals 4, pistil 1, ovary 1-loculed, stigma short, slightly capitate. Berry ellipsoid, dark purple. Flowering period in April.

5 Habitat

Ecology: Native to the Mediterranean region.

Resource distribution: China's Jiangsu, Zhejiang, Fujian, Taiwan, Sichuan, Yunnan and other places have introduced cultivation.

6 Traits

Trait Identification Leaves long elliptic or lanceolate, 611cm long, 1.54cm wide, apex acute, base cuneate, entire or microwave-like, revolute, gray-green on the upper surface, the lower surface is pale, the lateral veins and reticulate veins of both surfaces are prominent, glabrous; petiole 58mm long, glabrous. Leathery, not easily broken. Aromatic, taste pungent and cool.

7 Chemical composition

Leaves contain aromatic oil, the main components are linalool (linalool), eugenol (eugenol), geraniol (geraniol), 1,8 eucalyptus (1,8cineole), terpineol (terpineol), acetyl eugenol (aceiyleugenol), methyl eugenol (methyleugenol). Methyleugenol, αpinene, phellandrene, etc. It also contains sesquiterpene lactones: germacranolide, laurenolide, costunolide, artemorinolide. artemorin, peroxyartemisinolide (verlotorin), balchanin (santamarin, balchanin), reynosin. Also contains flavonoids: kaempferol (kaempferol) and quercetin (quercetin) 3 rutinoside, 3 glucoside, 3 galactoside, 3 rhamnoside, 3 arabinoside and rutoside (rutoside). It also contains (Dglucoglycerol type) 3octulose (Dglucoglycercr3octulose). It also contains alkaloids: reticuline, boldine, actinodaphnine, Nmethylactinodaphnine, isodomesticine, noriedomesticine. Noriedomesticine, neolitsine, launobine, nandigerine, hernangerine, cryptodorine.

The bark and wood contain volatile oil, the main components are αterpinyl acetate and 1,8 eucalyptin. The bark contains nettle-leaf fenugreek alkaloids, yellow-fleshed heather alkaloids, and rootless vine alkaloids.

Roots contain xanthohumoline, rootless vine alkaloids, and cardioflavonoid alkaloids.

8 Pharmacological effects

Antiviral effects The test in a petri dish showed that the oil of bay leaf was impregnated with a 2cm diameter circular filter paper sheet, and then allowed to evaporate in a petri dish, and then the lid of the dish was added with 0.02ml of rhinovirus 17 diluent (containing 100TCID50 of the virus), and the effect of killing was achieved by contact with the oil at 33℃ for 60 minutes. With gauze strips of rhinovirus 17, influenza virus A3 Kunjun 75 five strains, adenovirus 7 contact 30 minutes, 60 minutes and 120 minutes, to contact more than 60 minutes of the role of the obvious, the human embryo trachea block to add 0.2 ml of rhinovirus 17 100 to 1000 TCID50, adsorption for 30 minutes, and bay leaf oil (dipped and coated with 2 cm diameter round filter paper) to play the gas contact 90 minutes, can kill the virus. If the adsorption is extended for more than 3h, the volatile oil can not completely kill the virus. This suggests that part of the virus invades the cells of the trachea block, while the volatile oil cannot enter the cells. To people with laurel leaf oil rubbing acid preparation of nasal drops, and tannic acid as a control, showed that the volatile oil has a short-term efficacy in the prevention of colds, no side effects.

9 Taste

Pungent; slightly warm

10 Functions

Stomach and qi. Main epigastric distension and abdominal pain; bruises and injuries; scabies

11 Usage and dosage of bay leaf

Internal: decoction, 36g, external: appropriate amount, decoction and bath.

12 Excerpts

"Chinese Materia Medica"

Formulas used to the Chinese medicine bay leaves Fuming Tang

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