Researchers develop ice cube that doesn't melt or grow mold

Researchers have developed a new type of cooling cube that could revolutionize how food is kept cold and shipped fresh without relying on ice or traditional cooling packs.

These plastic-free, "jelly ice cubes" do not melt, are compostable and anti-microbial, and prevent cross-contamination.

The cooling cubes contain more than 90% water and other components to retain and stabilize the structure. They are soft to the touch like a gelatine dessert, change colour depending on temperature, and can be designed or cut to any shape and size needed.

They can be used 13 hours for cooling, collecting, rinsing with water and putting them in the freezer to freeze it again for the next use.

Early tests have shown the cubes can withstand up to 22 pounds without losing form. They can be reused a dozen times—just a quick wash with water or diluted bleach—and then disposed of in the trash or with yard waste.

The jelly ice cubes offer an alternative to traditional ice and could potentially reduce water consumption and environmental impact. They also offer stable temperatures to reduce food spoilage and could be ideal for meal prep companies, shipping businesses and food producers who need to keep items cold.