onion

onion

(Pharmacology)

Yu Cong (botany Dictionary).

[source] bulb of onion, a Liliaceae plant.

Onion

Perennial herb with strong aroma. The bulb is large, globose or oblate, covered with reddish red membrane. Leaves cylindrical, hollow; about 25-50 cm long, about 1-1.5 cm in diameter, the thickest below the middle; green, with white powder. Scapes up to 1 m high, cylindrical, hollow, below the middle expanded, diameter up to 3 cm; umbels, spherical, wrapped with 2-3 reversed bracts; petiole less than 2.5 cm long; perianth 6, arranged in two rounds, pink or nearly white, perianth obovate lanceolate, apex pointed; stamen 6, protruding, filament base wide; pistil 1, ovary superior, triangular, 3-locular Style filiform, stigma small. Capsule, loculicidal, containing many seeds. Seeds oblate, black. The flowering period is from June to July.

It is cultivated all over the country.

[collection] harvest in June.

[chemical composition] it contains odor substances such as mercaptan, dimethyl disulfide, diallyl disulfide and diallyl sulfide, trisulfide, thiosulfinates and a small amount of citrate and malate. The root, corm and leaf contain o-hydroxycinnamic acid, caffeic acid, ferulic acid and erucic acid. The corm and leaf also contain p-hydroxycinnamic acid, protocatechuic acid, polysaccharide a, polysaccharide B, quercetin, quercetin 3,4 "- diglucoside, quercetin 7,4" - diglucoside, thymine and many kinds of amino acids. The cortex contains kaempferol and kaempferol glycosides. The bud, pollen and anther all contain carotene.

[pharmacological action] 60 grams of fried onion can inhibit the increase of plasma cholesterol and decrease the fibrinolytic activity caused by high-fat diet in healthy men, so it can be used for atherosclerosis. Animal experiments have proved that onion can improve the tension and secretion of gastrointestinal tract. It can be used in intestinal asthenia and non dysentery enteritis. The crystal substance separated from it can kill Staphylococcus aureus and diphtheria when the ratio is 1:100000. It can be used to treat trichomonal vaginitis in gynecology. Onion is used as diuretic and expectorant. Mild external stimulation. It has the effect of resisting urinary disease in hyperglycemia induced by alloxan and adrenaline. Onion extract had contractile effect on isolated uterus. When raw or cooked onion or various extracts of onion were fed to rats and guinea pigs, the number of red blood cells decreased, and the degree of reduction was proportional to the dosage. Because it contains vitamin C 10-20 mg%, B 1-60 mg%, B 2-50 mg% and vitamin A 4 mg%, it can be used for vitamin deficiency, especially for vitamin C deficiency.

[functions and indications] Chinese materia medica: "fresh rammed mud agent can treat trauma, ulcer and trichomonal vaginitis. "

[usage and dosage] oral administration: raw food or cooked food, 1-2 Liang. External use: tamping or juice coating.