Usually acids and alkalis are represented by phosphorus and calcium. Foods with a higher phosphorus content than calcium are acidic foods, and conversely, foods with a higher calcium content than phosphorus are alkaline foods.
Acidic foods such as chicken, duck, fish, meat, canned food, white rice, beans, MSG, sugar, biscuits, bread, coffee, soda, cola, refined foods, processed foods and fruit pulp Some of them are acidic foods.
Alkaline foods such as millet, kelp, seaweed, dried shrimps, dried fish, fish bones, green vegetables, wild vegetables, raisins and fruit skins.
The so-called acid-base system is part of the yin and yang five elements in the "Book of Changes". Yin and yang cover acid and alkali, and yin and yang also cover the inside and outside. Therefore, the peel belongs to yang, which means it is alkali, and the pulp belongs to yin, which means it belongs to acid. ; People with tooth decay sometimes get angry as soon as they eat bananas. It will immediately cause toothache, because usually when eating bananas, only banana meat is eaten. Banana meat is acidic, especially bananas that are very sweet, that is, very acidic, so it can easily damage the living environment of human cells, including the cells of teeth. Moreover, when teeth already have cavities, they are more likely to be eroded by the strong acid of bananas and immediately cause toothache. Since the peel is alkaline and can neutralize the acidity of the pulp, you only need to eat bananas with the peel on (but not People do this!), it will not cause toothache.
In addition, longan and lychee, for example, are very sweet. Foods with high sweetness are classified as warm in traditional Chinese medicine. Foods that are warm in nature are more likely to cause internal heat if eaten in large quantities. It is easy to make the body's fire energy strong, so when you eat too much longan, lychee or durian, sometimes your eyes will discharge a very thick and sticky secretion, which is called eye feces paste in Taiwanese. If you eat too much When caused by too much longan, you only need to take some longan shells and longan seeds and add water to make a soup and drink it, and the symptoms will disappear. This is the principle of acid-base balance.