For example: vegetables (white gourd, tomato, pumpkin, cucumber, radish, spinach, Chinese cabbage, cabbage, rape, celery, lotus root, onion, eggplant and potato), fruits (apples, pears, bananas, peaches, strawberries, plums, persimmons, grapes, oranges, grapefruit and lemons), beans and beans.
Organic acids in these foods participate in metabolism in the body. After oxidation in the body, oxygen, carbon dioxide and water will be produced and excreted, and the residual metal ions can increase the alkalinity of body fluids.