Indian scientists have developed a composite packaging paper made of graphene oxide, which contains preservatives and can be used as packaging paper to help prolong the shelf life of fruits.
Fruits are very perishable, and 50% of the fruits produced are wasted, resulting in huge losses. The traditional preservative method is to coat the preservative with resin, wax or edible polymer, and then coat the fruit surface. Preservatives can be absorbed by fruits, leading to chronic diseases and health problems. Different from the previous technology, the composite packaging paper made of activated graphene oxide loaded preservatives can ensure that fruits do not come into direct contact with preservatives and release preservatives only when needed. When the fruit is over ripe or infected by pathogens, the acidity will increase due to acid secretion. Oxalic acid triggers the release of preservatives to protect the fruit from decay. If the fruit is fresh when eaten, the preservative will remain on the wrapping paper. The graphene oxide wrapping paper can be reused and can prolong the shelf life of fruits, thus benefiting farmers and the food industry.
Post time: Aug-23-2021