Not included.
It does not contain harmful substances. Preservatives are nothing more than inhibiting the combination of ethylene and fruits to prevent aging. For the human body, the currently used preservative technology is still very complete and will not cause harm to the human body. As long as the preservatives are used The concentration and residual amount are controlled, and an appropriate amount of preservative will not cause damage to the human body. If the preservative exceeds the standard or is added illegally, it will be very harmful to the human body and may cause genetic damage, liver and kidney function damage. Since sulfite is a water-soluble preservative, you must rinse the fruit with water before eating. Vinegar can also be used. To wash off the preservatives on the fruits, you can add a few drops of white vinegar to the water to wash the fruits more cleanly.
Grape preservative was developed by the National Agricultural Products Preservation Engineering Technology Research Center. The creativity of this patent lies in the scientific proportioning, fusion and tableting of sodium pyrosulfate and potassium pyrolysulfate with sustained-release agents, binders, excipients and other polymer ingredients. It has the characteristics of easy to use, safe and non-toxic, stable release speed, and good antiseptic and fresh-keeping effect. Kyoho grapes can be stored for 5 to 7 months at 0 degrees Celsius, with a good fruit rate of over 95% and the fruit stems as fresh as ever.