Is the more acidic the yogurt, the more nutritious it is?

　　Is the acidier the yogurt, the better? Before answering this question, we must first understand how milk becomes sour.

　　The lactic acid bacteria added to the milk ferment to produce lactic acid and other substances, and the milk will turn into sour yogurt. Normally produced yogurt has a good balance of sweetness and sourness due to the addition of sugar or sweeteners. However, as the storage time of yogurt increases, lactic acid bacteria will grow slowly, and the acidity of yogurt will also slowly increase. However, in a low-temperature storage environment, the acidity of yogurt during the shelf life is acceptable to the human body, and the activity of lactic acid bacteria is also maintained well. However, the acidity of yogurt has a limit. If yogurt is separated from the cold chain during storage and logistics, such as being left at room temperature or outdoors, lactic acid bacteria will multiply rapidly and cause the acidity of yogurt to increase beyond the acceptable range. Such yogurt will taste very sour, and the activity of lactic acid bacteria will decrease, and the degree of denaturation of milk protein will increase, which is not conducive to human body absorption and is not good for the gastrointestinal tract. healthy . Therefore, the more sour the yogurt, the better.

　　When purchasing yogurt, be sure to choose products placed in low-temperature freezers to ensure the freshness and safety of the product. If you buy promotional products that are close to their expiration date, be sure not to buy them in large quantities for cheap, and avoid eating expired yogurt. Since it is inevitable that yogurt will temporarily leave the cold chain during shopping, you should drink it as soon as possible after returning home or put it in the refrigerator to avoid leaving it at room temperature for a long time.

　　Although milk also contains a high amount of calcium, compared with it, the lactic acid contained in yogurt combines with calcium to promote calcium absorption. Generally speaking, drinking yogurt has the best effect between 30 minutes and 2 hours after a meal. However, Chinese medicine recommends that in order to maximize the calcium-supplementing effect of yogurt, it is best to drink yogurt at night.

　　reason:

　　1. From 12 o'clock in the evening to early morning is when the human body's blood calcium content is lowest, which is conducive to the absorption of calcium in food.

　　2. During the time period from 12 o'clock in the evening to early morning, there are fewer factors that affect calcium absorption in the human body.

　　Tips:

　　When drinking yogurt at night, you must remember that some bacteria and acidic substances in yogurt can cause certain damage to teeth. You should brush your teeth or rinse your mouth in time after drinking. In addition, if you drink yogurt on an empty stomach, it will easily stimulate gastrointestinal emptying, and the nutrients in the yogurt will be excreted before being fully digested and absorbed. Drinking it after a meal can reduce stimulation and allow the yogurt to be slowly absorbed in the stomach.