The use of preservatives is currently more common practice, as long as the concentration of preservatives and residual control, the right amount of preservatives will not cause damage to the human body. In addition, the use of preservatives after the cost will increase, and the preservative put more does not mean that the preservation effect is good. Some fruits after the use of preservatives will also change color, and even produce odor, the effect will be counterproductive. Therefore, consumers do not need to be too frightened. The use of preservatives is a necessary means of fruit preservation, as long as the rational use of human health will not affect.

If the preservative exceeds the standard or illegally added, it is very harmful to the human body. It may lead to genetic damage, liver and kidney function damage, but also lead to chronic poisoning and so on. "For example, if you eat food with excessive sulfur dioxide content, you may experience symptoms such as dizziness, nausea, vomiting and diarrhea, and severe and may cause acute poisoning, or even carcinogenic. At present, the fruit preservation is still quite chaotic, the market is a mixture of good and bad, consumers still need to be vigilant.