Juice is well-known nutritional drink, but many people will buy it at home, often have to take a long time to finish. As everyone knows, fruit juice during that time, the main nutritional components have declined a lot, and some even completely disappeared.

In just squeezed out of time to save the fruit juice in the main nutrients, but vitamin chemically unstable, will gradually break down, loss of activity; some small amounts of physiologically active substances will gradually be lost, or transformed into less active form. In addition, the juice stored for a long time, the taste will be more light, the color will be more shallow, it is because of its flavor substances and natural pigments are gradually reduced. These factors lead to a decline in nutritional value.

Like a lot of food and fruit juices to preserve the longer, the more nutrients decrease. Because food is a higher active substances. An apple is pressed into juice, one of many enzymes is still alive, and some elements are still continuing chemical reaction, making it the quality of a gradual change. Only minerals, dietary fiber and starch and other ingredients more resistant to storage, significant changes will not occur. Therefore, when buying fruit juice, we should try to choose the factory near products; buy home after going to finish in time and can not Jiu-Cun, especially after the opening.

In storage, the fruit juice the fastest components of the loss of vitamin C. Different types of fruit stored under different conditions, vitamin C, the loss rate is not the same, up 20% from 100%. In general, the larger acidic fruit juice, vitamin C can be saved in the longer, because the vitamin C in the most stable under these conditions, microorganisms are not easy to breed. Hawthorn juice, orange juice, grape juice, etc. to open, you can store in the refrigerator 3 to 5 days, and the lower acidity of peach juice, pear juice, etc., the best finish in Kaifeng, after two days.