. Tomatoes are also vegetables and fruits. They are rich in nutrition and are common dishes on the table. Recently, a study showed that eating tomatoes rich in lycopene can help reduce the bad cholesterol in the blood and protect blood vessels. In fact, there are many health functions of tomatoes. Let’s have a look at it.
From & lt; Poison & quot; To delicious
tomato is loved by people all over the world, but this kind of vegetable and fruit originated in Peru was suspected to be poisonous in the early years because of its bright color, so it was called & lt; Wolf peach;. In the 16th century, a Duke of England brought tomatoes to Europe, but they were only used as ornaments. Later, a painter risked his life to try them. He found that they were non-toxic and delicious. Since then, tomatoes have been on the table. Tomato was introduced into China in Ming Dynasty; Fan & quot; At that time, it was called & quot; Persimmon & quot;, Botanists later found that it is the same as eggplant, belonging to Solanaceae, also known as tomato. According to the introduction of foreign organic planting websites, there are four kinds of tomatoes: conventional tomato, cherry tomato, shrub tomato and steak tomato. Most of the common tomato species on the market are conventional tomato and cherry tomato, or both of them are cultivated.
the effect of tomato on health has been studied continuously at home and abroad. In the above study, the research team will bad cholesterol value 120 ~ 160 mg / dl of healthy < a (a) (a) (a) (a) (a) (a) (b) (a) (b) (b) (a) (b) (a) (b) (b) (a) (b) (a) (b) (b) (a) (b) (b) (b) (b) (b) (b) (b) (c) (b) (c) (b) (c) (c) (c) (C) (c) (c) (c) (c) (c) (c) (c) (c) (c) (c) (c) (c) (c) (k) (c) (c) (c) (, The vitamin C content of tomato per 100 grams is about 5 times that of apple.
lycopene is the main antioxidant component in tomato. Some clinical biochemical scientists fed lycopene to experimental mice, and the dose was equal to the recommended amount of human body. The results showed that the bone mineral density of experimental mice increased significantly, and the content of estrogen and other sex hormones also increased.
health benefits can be obtained by taking 5-10 mg of lycopene per person per day. The lycopene content of different kinds of tomatoes per 100 grams ranged from 0.8 mg to 4.2 mg. If calculated according to the median value of 2 mg, three medium-sized tomatoes per day could meet the demand. According to the dietary guidelines for Chinese residents (2016), the recommended intake of 300-500 grams of vegetables, Xu Shufang suggested that the recommended intake of Eggplant and melon, including tomatoes, should be about 150 grams.
there are many kinds of tomatoes, and different colors of tomatoes have different nutritional components. The American Society of horticulture has explored the influence of color differences on the nutritional value of tomatoes: red tomatoes are rich in lycopene; Orange tomato is rich in tocopherol, it is an antioxidant, which is beneficial to prevent eczema, psoriasis and other skin diseases; Yellow tomato usually has high content of polyphenols, which is beneficial to reduce cholesterol and blood pressure. Different tomatoes have different nutrients, but the researchers said that no matter which kind of tomato is conducive to improving the overall health index, so the selection should not be limited to a certain color, but should be diversified as far as possible.
Tomato products do not choose additives
many people have questions: is it better to eat tomatoes raw or to cook? Are tomato products such as ketchup also beneficial?
tomato sweet with some acid, raw not only appetizer, but also can put vitamins, dietary fiber and other nutrients in the body, but lycopene, carotene and other fat soluble nutrients, need to be mixed with oil in order to better absorb. Therefore, the tomato into the pot, add a small amount of oil fried, is conducive to the absorption of lycopene and carotene. In this case, the loss of vitamin C is also very small, and the content of nutrients such as dietary fiber and minerals that are not affected by temperature will not change. Therefore, tomatoes can be eaten raw or cooked. In order to better absorb lycopene, carotene and other nutrients, cooked food can better meet the demand, but pay attention to the amount of oil added must be less, a small spoon is enough.
tomato sauce is also a common seasoning, sweet and sour, very appetizing. Experts advise that when choosing tomato ketchup, the first thing to see is whether the sauce is made of pure tomato or tomato sauce with white sugar, salt and flavors on the basis of tomato paste. The latter is condiment with seasoning function. When cooking, we should pay attention to reducing the amount of sugar and salt.
is similar to the pure tomato sauce. The extracted pure tomato juice retains all the nutrients of tomato, and the cell wall is broken. It has more lycopene dissolved out, so it is a drink with higher nutritional value. However, it should be noted that when buying bottled tomato juice in the supermarket, you should carefully observe the ingredients list. Many of them add sugar, salt and other ingredients on the basis of tomato juice. This kind of drink is almost the same as a sweet drink.
some people should be cautious or eat less tomatoes. 1. Patients with gastroesophageal reflux and those prone to abdominal pain. Gastroesophageal reflux is largely related to diet. Organic acids in tomatoes may cause gastric acid reflux and cause discomfort. Immature tomato contains a lot of alkaloids. Although the content of solanine decreases with ripening, it is also easy for gastrointestinal sensitive people to have discomfort when eating a lot of them. This kind of people suggest eating tomatoes cooked, avoid eating them on an empty stomach or raw. 2. People with tomato allergy. Tomato is one of the known allergens, which may cause sneezing, eczema, skin rash and so on. 3. People taking anticoagulants. Due to the high content of vitamin K in tomatoes, taking a large amount of it will reduce the anticoagulant effect of drugs, and eating a small amount of it is generally no problem.
. It is not suitable to eat raw
, especially for women with deficiency cold of spleen and stomach and menstruation. Tomato contains a lot of soluble astringents and other ingredients, which react with gastric acid and condense into insoluble lumps, which easily cause gastrointestinal fullness, pain and other symptoms. If only the tomato as a fruit to eat, supplement vitamin C, or summer heat, it is better to eat raw.
is not suitable to eat on an empty stomach.
the amount of gastric acid secretion increases on an empty stomach. Because some chemical substances contained in tomatoes combine with gastric acid, tomatoes (14 pieces) are easy to form insoluble lumps, which often cause abdominal pain, stomach discomfort and stomach distension.
immature should not eat
because of the toxic solanine. If you eat immature green tomatoes, you will feel bitter and astringent. If you eat too much, it can lead to poisoning, dizziness, nausea, general discomfort, vomiting and fatigue, and even life-threatening. Generally speaking, the redder the tomato is, the higher the lycopene content is. The lycopene content of immature and semi mature green tomatoes is relatively low.
should not be heated at high temperature for a long time.
lycopene is easy to decompose when exposed to light, heat and oxygen, thus losing its health function. Therefore, cooking should avoid long-term high temperature heating.
should not be eaten with cucumber
cucumber contains a vitamin C decomposing enzyme, which will destroy vitamin C in other vegetables. Tomato is rich in vitamin C. if they are eaten together, it can not achieve the effect of supplementary nutrition.
is not suitable for anticoagulant drugs.
tomato contains more vitamin K. vitamin K mainly catalyzes the synthesis of prothrombin and thromboplastin in liver. When vitamin K is insufficient, it will prolong the coagulation time and cause subcutaneous and muscle bleeding.
fasting when taking neostigmine
should not be taken when taking the above two drugs.
tomatoes and Baijiu can not eat together
. The same food will cause adverse biochemical reactions, resulting in chest tightness and shortness of breath.
tomatoes and sweet potatoes can not be eaten together
eating together will have adverse biochemical reactions, long-term accumulation will make people get stone disease, vomiting, abdominal pain, diarrhea.
tomatoes and carrots can not eat together
carrots and vitamin C rich food with eat, will destroy vitamin C.
tomatoes and pig liver can not be eaten together
tomatoes are rich in vitamin C, pig liver makes vitamin C oxidized and deoxidized, making it lose its original function.
tomatoes and salted fish can not be eaten together
eating together is easy to produce carcinogens.