1, the pH of vinegar is generally 2.9. In the field of chemistry, rice vinegar is an acidic substance, but it becomes alkaline when it enters the field of food nutrition. Whether the food is acidic or alkaline is not judged by taste, but by the metabolites after it is decomposed and metabolized in the body, which is generally converted into the metabolites of chlorine, sulfur, and other acidic ions as the main metabolites, this food is acidic food, and if it is converted into the alkaline ions such as potassium, sodium, and calcium as the main alkaline food, then it is alkaline food, and rice vinegar belongs to the alkaline food.

2, in daily life, moderate consumption of some vinegar is beneficial to most, the human body should eat more alkaline food, keep the body alkaline, which is good for the skin. Because our staple food is mainly acidic, eat some alkaline food, can neutralize the body's acidic substances, to help the body balance pH, but for people with stomach ulcers, stomach acid is not suitable, should eat less.