The nutritional value of onion

The nutritional value of onions:

1. The onion has a divergent and cold effect because onion bulbs and leaves contain a kind of oleaginous volatile matter called sulphide, which has a simple spicy taste. This kind of material can resist cold, resist influenza virus, and has strong sterilization. effect;

2. Onion is rich in nutrition and spicy. Can stimulate the secretion of stomach, intestines and digestive glands, increase appetite and promote digestion, and onion does not contain fat, its essential oil contains a mixture of sulfur compounds that can lower cholesterol, can be used to treat indigestion, loss of appetite, food product stop ;

3.Onion is the only one known to contain prostaglandin A. Prostaglandin A can dilate blood vessels and reduce blood viscosity, which will produce lower blood pressure, reduce peripheral blood vessels and increase coronary blood flow, and prevent thrombosis. The role of vasopressor substances such as catecholamines in the human body can also promote the excretion of sodium salts, which can reduce blood pressure. Regular consumption of foods has a health effect on hypertension, hyperlipidemia, and cardiovascular and cerebrovascular diseases.

4. Onion has a certain refreshing effect, it can help cells to better use of glucose, while reducing blood sugar, brain cells to provide heat energy, is diabetes, constipation in patients with therapeutic foods;

5. The onion contains a substance known as "Quercetin" 9, which is one of the most effective natural anticancer substances currently known. It can prevent the biochemical mechanisms in the body from mutating and controlling the growth of cancer cells. As a result, it has anti-cancer and anti-cancer effects;

6. The trace element contained in onion selenium is a kind of very strong anti-oxidant, can eliminate the free radical in the body, enhance the vitality and metabolism ability of the cell, have anti-cancer anti-aging effect;

7. Onions also contain certain amounts of calcium. In recent years, Swiss scientists have found that eating onions can increase bone density and help control osteoporosis;

8. Onion contains phytoalexins such as allicin, which has a strong bactericidal capacity. Chewing raw onions can prevent colds.

Precautions:

1, the onion should not eat too much, easily lead to eyelid and fever. At the same time, those who have skin itching disease, suffering from eye diseases and stomach, lung and stomach inflammation eat less. At the same time onion Xin Wen, fever patients should be careful food;

2. Spicy onions contain irritating effects on the eyes. When suffering from eye diseases and eye congestion, it is not appropriate to cut onions.