Eating alkali can neutralize organic acids or sulfides attached to dark green vegetables due to excessive spraying of pesticides, thus preserving the original color of vegetables and removing the pollution of pesticides on vegetables.
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Alkaline water side effect
Some people think that drinking alkaline water such as soda water can change acidic constitution and be beneficial to health. In this regard, Zhu Jun said that drinking alkaline water and eating alkaline food can't prevent tumors. The body itself will be fine-tuned to make it in the most suitable state, but it is difficult to change the acid-base environment of the body through general diet. People still need a balanced diet, not partial acid and alkali, otherwise it may cause acidosis or alkalosis.
The main chemical component of edible alkali is sodium carbonate. If people take sodium carbonate directly, it will be quickly neutralized by gastric acid. Coupled with the role of the buffer system in the body, it will not have a significant impact on the acidity and alkalinity of the human body, but will cause obvious symptoms such as abdominal distension. Moreover, sodium carbonate is very irritating to the digestive tract and cannot be taken directly. The drug used in clinic to directly neutralize gastric acid is sodium bicarbonate, whose alkalinity is relatively weaker than that of sodium carbonate, and its effect is relatively mild.
Source: Baidu Encyclopedia-Edible Alkali