White vinegar basically contains no other nutrients except acetic acid, while rice vinegar is fermented from grain and contains many nutrients, which is beneficial to health.

2 How much vinegar black beans should be put in vinegar? The right amount of vinegar black beans and vinegar depends on the size of the bottle used to hold vinegar beans. A bottle of vinegar is not necessarily 1 kg of beans, just be careful not to exceed the black beans, leave one-third of the space in the bottle, and seal the lid better. When black beans are swollen and cannot be soaked in vinegar, add some vinegar.

Soaking black beans with vinegar is mainly for people to better absorb anthocyanins in black beans. Studies show that black beans have the best antioxidant and anti-free radical ability in the environment with PH less than 7, and anthocyanins are more easily absorbed by human body.

3 efficacy and function of vinegar soaking black beans 1, vinegar soaking black beans is a health preservation method. Soaking black beans with vinegar has the effects of tonifying kidney, losing weight, improving eyesight, blackening hair and whitening skin.

2. The pH value of vinegar is 1.5-2.0, which is very close to the pH value of human gastric acid 1.3- 1.8, and has the function of regulating the stomach. The sour taste of vinegar can accelerate saliva secretion and digestion. Acetic acid and citric acid can penetrate food and have strong bactericidal ability.

3. A study on vinegar in Japan pointed out that vinegar contains high amino acids, which helps to inhibit human aging and prevent various senile diseases. Washing your face or taking a bath with vinegar water can soften your skin and enhance your vitality.

4. Soaking black beans with vinegar has the functions of beautifying, losing weight, tonifying kidney, improving eyesight and blackening hair, and can effectively improve constipation, hypertension, hyperlipidemia, backache and leg pain, diabetes, prostate disease, gray hair, coronary heart disease, decreased vision, eye pain, dryness, dizziness, headache and other symptoms caused by watching computer or TV for a long time. At the same time, soaking black beans in vinegar has a good effect on improving myopia and other eye diseases.

4 people who are forbidden to soak black beans in vinegar 1, people who are allergic to plant protein can't eat them;

2. People with low gastrointestinal function, especially those with bad stomachs, will have flatulence and indigestion after eating, while many middle-aged and elderly people have bad stomachs, but eating them will be harmful;

3, gout patients and patients related to acid diseases can not eat.