When it comes to vitamin supplements, many people first think of fruits; and when it comes to vitamin C supplements, many people think of sour fruits, such as lemons and sour oranges. Some people believe that the more sour the fruit, the higher the vitamin C content. However, is this really the case?
< br/>
Actually, not all foods containing vitamin C are sour, and foods that are not sour may also contain vitamin C.
There are indeed some sour fruits that are very high in vitamin C. For example, sea buckthorn contains 204 mg of vitamin C per 100 grams, and jujube contains 900 mg of vitamin C per 100 grams. However, more fruits do not conform to this pattern, such as lemons, which are often considered sour, with only 22 mg of vitamin C per 100 grams; oranges have only 33 mg of vitamin C per 100 grams. These legendary “high vitamin C fruits” are not even as good as Chinese cabbage, which has a vitamin C content of 47 mg per hectogram.
In fact, the acidity of fruit mainly depends on the content of organic acids in the fruit, such as malic acid, citric acid, isocitric acid, etc. Sour or sweet is determined by the “sugar-acid ratio” contained in it. If the sugar content is high and the organic acid content is low, it will taste sweet. Conversely, if the organic acid content is high and the sugar content is low, the fruit will taste more sour.
In addition, in addition to fruits, many vegetables also contain vitamin C. For example, in potatoes, the data shows that the vitamin C content per 100 grams of potatoes is 27 mg, and that of sweet potatoes is 26 mg, which is higher than that of most rhizomes, fresh beans and nightshade vegetables; The C content is 21 mg, the vitamin C content in lentils is 13 mg, the vitamin C content in tomatoes is 19 mg, and the vitamin C content in eggplant is 5 mg, but the content is lower than most leaf and flower vegetables.
Xiaoqian warmly reminds that according to the “Reference Intake of Dietary Nutrients for Chinese Residents”, the human body needs to take in 100mg of vitamin C every day. 500 grams of vegetables, 200 grams of fruit can meet the needs of the whole day. But also need to pay attention to, while supplementing vitamin C, to control the total intake, pay attention to drinking more water.
Source: China Association for Science and Technology Scientific Rumors Platform Xinhuanet People’s Network