Onions are frequent meals on the table of many families. They are rich in nutrition and have a high therapeutic value. They are called “vegetable queens†in European and American countries. What is less known is that onions also have the reputation of "heart stents" in food.
This is because onions have a prominent role in protecting the heart: research has found that organic sulfur compounds in onions have antithrombotic properties that help prevent unwanted platelet aggregation, lower cholesterol and triglyceride levels, and improve red blood cell membrane function. Its rich flavonoids have a strong anti-oxidant effect and help prevent heart and brain diseases such as heart attack and cerebral hemorrhage.
According to the skin color, the onion has three kinds of purple skin, yellow skin and white skin. The data show that purple skin onion protein, dietary fiber and calcium, magnesium, zinc, iron and other mineral content are higher than light-colored yellow skin and white onion, but the latter two carotene, vitamin C content than purple skin high. It is worth mentioning that the purple skin onion is rich in anthocyanins, this active substance has a strong antioxidant function, help protect the body from free radical damage. In addition, the content of organic sulphide in the purple skin onion is higher than the other two, so the spicy taste is heavier. In general, purple skin onions have higher nutritional value than white skin onions and yellow skin onions.
Light-colored onions have high moisture and sweetness and are relatively difficult to preserve. They are more suitable for salads and vegetable salads. Purple onions are more brittle and have a more spicy taste. They are suitable for short-term quick stir-fry. The onion should be picked and picked up. The skin is dry, firm, and free from scratches. Store it in a cool, dry, dark, well-ventilated place. What needs to be reminded is that the onion stimulates the stomach more, and patients with gastric ulcers try to eat less. (Liu Ming, Member, Nutritional Division, Wu Jieping Medical Foundation)
Greenhouse Wet Pad For Cooling System
"Wet curtain - fan" of the vertical ventilation cooling combination is the most economical and effective measures to cool the greenhouse in summer.
Years from the application of a real show, even in the heat of the day reported, the rational design and installation of a fan of wet curtain cooling system can still control the greenhouse temperature at 30 °C, in order to heat the greenhouse to reduce the adverse effects minimum. In the summer, your production needs Jienuo wet curtain to help.
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