Indian Team Develops Reusable Graphene Oxide Fruit Wrap with On-Demand Preservative Release
An Indian research team has developed a composite packaging paper based on graphene oxide, incorporating a preservative. The material is intended for use as a wrapping paper that helps extend fruit shelf life.
Because fruit is so perishable, 50% of the fruit produced is discarded, creating major losses. Traditional approaches often involve coating preservatives with resin, wax, or edible polymers and then applying them to the fruit surface; these preservatives can be absorbed by the fruit and are linked to chronic health issues. The new concept differs by loading preservatives onto activated graphene oxide to form a composite paper. This keeps the fruit from touching the preservatives directly and allows release only when required. When fruit is overripe or infected by pathogens, acid secretion raises acidity, and oxalic acid acts as a trigger for preservative release, helping prevent rot. If the fruit is still fresh at the point of consumption, the preservative stays on the paper. Reusable and able to extend fruit shelf life, the graphene oxide paper could benefit farmers and the food industry.
Source: China Packaging Network (pack.cn); original link: http://news.pack.cn/show-378023.html
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