1, in general, the more acidic the juice, the longer the vitamin C can be preserved, because vitamin C is most stable in such conditions, and microorganisms are not easy to reproduce. Hawthorn juice, citrus juice, grape juice, etc. after opening, can be stored in the refrigerator for 3-5 days, while the less acidic peach juice, pear juice, etc., it is best to drink within 2 days after opening.

2, before juicing, with boiling water slightly scalded can kill most of the fruit above the oxidative enzymes, but also to make their organizations Microsoft a little, and then immediately juice can reduce the loss of nutrients, increase the rate of juice, but also to make the color of the juice is relatively more vibrant and prolong the preservation time.

Extended information:

Don't drink juices with high acidity when you are fasting, eat some staple food first and then drink it in order to avoid stomach upset. Whether it is fresh fruit juice, pure fruit juice or juice drinks, try to drink as little as possible during Chinese food and dinner.

The acidity of fruit juice will directly affect the acidity of the gastrointestinal tract, a large amount of fruit juice will dilute the concentration of gastric digestive juices, fruit juice in the fruit acid will also be combined with some of the nutrients in the meal to affect the digestion and absorption of these nutrients, so that people feel bloated in the stomach during the meal, can not eat the meal, the meal is not well digested, the stomach is uncomfortable. In addition to breakfast, it is also appropriate to drink fruit juice between meals.