The smell of onions contains sulfide. Eating some onions every day can inhibit bacteria in respiratory tract and intestine, but it is not accurate to say that putting onions in the room can adsorb bacteria.
The main components of onion are sulfur compounds, flavonoids, phenylpropanoids, steroidal saponins, nitrogen compounds, prostaglandins and trace elements such as calcium, iron and phosphorus. These components have different pharmacological effects, among which sulfur compounds have antibacterial and anticancer effects, nitrogen compounds have hypoglycemic and hypolipidemic effects, and flavonoids have antioxidant effects.
Duan Jianmin, a popular science expert of the US Food and Drug Administration in Wuhan, Hubei, mentioned that these effects "look beautiful", but if you really want to achieve the effect of disease prevention, there is a premise that the effective components of onion must be absorbed by the human body and need to reach a certain dose. Therefore, putting onions at home can't prevent diseases at all except smelling them.
Guo Zhihong, chief physician of the Department of Traditional Chinese Medicine Rehabilitation Medicine of the Second Artillery General Hospital, also said that onions have the characteristics of pungent and cool. Whether onion can cure cold depends on its mild and spicy taste, which can dispel cold, sweat and drive away evil spirits. But only in the house, this pungent concentration is too weak to have a therapeutic effect.
Extended data
1, onion has antipyretic effect, which is determined by the nutritional value of onion. Onions contain an oily volatile substance, so when we eat onions, we always feel a spicy taste. This substance can kill bacteria and prevent the invasion of influenza virus.
Onion has a unique taste, which can increase people's appetite. In summer, due to the weather, many people will lose their appetite. At this time, you can eat a little onion to regulate your spleen and stomach.
3. There is trace element selenium in onion, and its nutritional value determines its anti-aging effect. Selenium is a strong antioxidant, so eating some onions often can play the role of beauty beauty.
Onion contains a nutrient called quercetin, which is one of the natural anticancer substances. So eating onions often can also play an anti-cancer role.
Onions should not be eaten.
People who sweat too much should not eat it, and patients with eye diseases had better not eat onions. In addition, patients with digestive system ulcers and people who are prone to gas accumulation in their stomachs should not eat too much onions. Raw onions can't be eaten with honey.
People's Network-Can onions be cut at both ends and opened indoors to prevent colds? Onions mean I'm not that god.
People's Network-Onions are good for people. Eating onions has four functions.