Per100g dehydrated onion stems contain heat1268kJ, water 9.7g, protein 6.3g, fat 0.4g, dietary fiber1.4g, sugar 68.6g, ash 3.6g and carotene 2 10.

Onions are rich in vitamins and minerals.

Functional action

1. Onions contain volatile oil, and the smell is irritating. When used in cooking, it can remove the fishy smell in greasy dishes, produce special aroma, secrete digestive juice and stimulate appetite.

2. Onion also contains "prostaglandin A", which has the functions of relaxing small blood vessels, promoting blood circulation and improving the function of nervous system, helping to prevent dizziness caused by high blood pressure, keeping the brain flexible, and playing a certain role in preventing cardiovascular diseases and Alzheimer's disease.

3. The volatile capsaicin contained in shallots has strong bactericidal ability. When capsaicin is excreted from the body through sweat glands, respiratory tract and urinary system, it can slightly stimulate the secretion of related glands, and play a role in sweating, eliminating phlegm and diuresis, thus improving the body's resistance and preventing respiratory infectious diseases.

People who often eat shallots, even if they are fat, have no high cholesterol and strong physique.

5. Onion contains trace element selenium, which can reduce the nitrite content in gastric juice and play a certain role in preventing gastric cancer and various cancers.

6. Chinese medicine believes that shallots can release poison, detoxify and kill insects. Indications: common cold, abdominal pain due to yin-cold, constipation, dysentery, sores and carbuncle, abdominal pain due to insect accumulation.