The nutritional value and efficacy of onions
Onion is a very common food that we can do. It can make vegetables tired, delicious, nutritious, rich in selenium and quercetin. So what are the nutrition of onions? Here are the nutrition values ​​and effects of the onions carefully prepared for you by Xiao Bian. I hope to help you!
Kind of onion
According to its skin color can be divided into white, yellow and red skin:
1. White skin species: small bulbs, white or slightly greenish appearance, juicy and pale leaves, good quality, tender meat, suitable for raw food.
2. Yellow species: Medium size bulbs, thin scales, yellow skin, yellow meat with palladium, soft and tender meat, less water, sweet and slightly spicy, excellent quality.
3. Red species: large bulbs, purple or dark pink skin, texture is more brittle, dense tissue, meat with red, poor quality, less meat than the yellow species, spicy flavor, more water, But resistant storage. People in China often fear their peculiar spicy aroma, but in foreign countries it is known as the “Queen of Cuisine†and its nutritional value is not low. Onion quality requirements: onion hypertrophy, skin gloss, not bad, no mechanical injury and dirt, fresh onion without leaves; after storage, not soft, not bolting, scales close, low water content, spicy and sweet Better.
The nutritional value of onion
The nutritional value of onion is very rich, Xiao Bian to tell you a good introduction to it.
One: The onion has a divergent and cold effect because onion bulbs and leaves contain a kind of oleaginous volatile matter called sulphide.
Two: Onions also contain some calcium. In recent years, Swiss scientists have found that eating onions can increase bone density and help prevent and treat osteoporosis.
Third, 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.
Four: onions have a certain refreshing effect, it can help cells to better use of glucose, while lowering blood sugar, brain cells to provide heat energy, is diabetes, constipation in patients with therapeutic food.
Five: Onion is rich in nutrients and spicy. Can stimulate the secretion of stomach, intestine and digestive gland, promote digestion, increase appetite, and onion does not contain fat, its essential oil contains a mixture of sulfur compounds that can lower cholesterol.
Six: The onion contains a substance known as "Bromoflavin" 9, which is one of the most effective natural anticancer substances known to date. It can prevent the biochemical mechanisms in the body from mutating and controlling the growth of cancer cells. It has anti-cancer and anti-cancer effects.
Seven: 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, thereby lowering blood pressure.
Five effects of onions
Onion is warm and sweet. With diuresis, expectorant, stomach and intestine, detoxification and insecticidal functions, onion extract also has a bactericidal effect, which can increase gastrointestinal tract tension and increase gastrointestinal secretion. Onions in addition to these effects have other effects, Xiao Bian to introduce it to everyone
One: calcium supplement
Helps increase bone density to prevent osteoporosis
II: Anti-cancer anti-cancer delay aging
Antioxidants contained in onions enhance cell viability Anti-cancer anti-aging
Three: Promote digestion
It can be used to treat indigestion, loss of appetite, and stagnation of food product.
Four: Sterilization
The spicy onion can resist cold, resist influenza virus, and have strong bactericidal effect.
Five: lower blood pressure and blood lipids
Regular consumption of high blood pressure, high blood lipids and cardiovascular and cerebrovascular patients have a health effect.
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