Composition of onion is very complex and, in addition to protein, water-soluble vitamins, carbohydrates and calcium, iron, selenium content in high, there are sulfur-containing compounds, flavonoids, steroid, prostaglandin and other phytochemicals with a variety of health care Effect:
1. Anticancer effect. Onions are rich in flavonoids and trace element selenium. Flavonoid with free radical scavenging antioxidant role; Selenium is a strong anti-oxidants, can remove a variety of free radicals produced by the body, has anti-cancer, anti-aging effect.
2. Lower blood pressure, prevent blood clots. A handful of onion A vegetable that contains prostaglandins. Prostaglandin A is a strong vasodilator that can reduce the body′s peripheral vascular resistance and heart coronary arteries and promote blood pressure caused by substances such as sodium excretion, therefore lowering blood pressure, prevent blood clots effect.
3. Lowering blood sugar, blood fat. Quercetin in onions is hypoglycemic agents tolbutamide similar organic matter, suitable for diabetes, human consumption. Clinical study confirmed that onion contains sulfide and sulfur-containing amino acids have a role in lowering cholesterol and blood lipids.
4. Other. Onion in phytoncide can stimulate appetite, help digestion, while there expectorant, diuretic, sweat and prevention of colds and so on.
At present, the onion has become a health food of the new aristocracy and a true dual-purpose drug vegetables “functional health food.”
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