I heard that food should be fresh and fresh. Which nutrient is higher than ketchup and fresh tomatoes?
Nutrition expert A: According to the US MSNBC publication, processed tomatoes are better than fresh tomatoes, that is, tomato sauce is more nutritious than fresh tomatoes. Chinese nutritionists also hold the same view.
First, we have to figure out what the biggest benefit of tomatoes is. Many people think that raw tomatoes are heated into "cooked tomatoes", that is, after the tomato sauce, vitamin C will be lost. That's right. However, tomatoes are acidic. Under the protection of acidic conditions, the stability of vitamin C will increase, so the loss of vitamin C in tomato sauce is not large. Moreover, in vegetables and fruits, the vitamin C content of tomatoes is not the most abundant. To supplement vitamin C, you can eat green peppers and green leafy vegetables to supplement, and there is no need to demand the vitamin C content of tomatoes.
In fact, we eat tomatoes, the most desirable benefit is lycopene. Many studies have confirmed that this natural health supplement can reduce prostate, bladder, skin and stomach cancers and intestinal diseases, and help reduce free radicals that cause skin aging. Compared with fresh tomatoes, lycopene in ketchup is more abundant and more easily absorbed. First, lycopene is mainly found in the soluble solids of tomato. The soluble solid content of fresh tomato is only 5%, while the ketchup is concentrated, the soluble solid content is 18%-20%, which is 4 times that of fresh tomato. ! Secondly, during the heating process, the cell wall of the tomato is broken and the lycopene is fully released, so the lycopene in the tomato sauce can be better utilized by the human body.