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New ice cubes promise to change the way food is refrigerated and transported

 Last Update: 2022-09-05
 Source: Internet
 Author: User

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Recently, the team of Sun Gang, a professor at the University of California in the United States, developed a kind of ice that does not melt - an environmentally friendly hydrogel that can resist freeze-thaw cycles

Ice cubes are widely used cooling media in the food supply chain due to their low cost and high latent heat of fusion

The new ice cubes can cool items for up to 13 hours, the researchers say, and can be used again after a quick wash with water or diluted bleach, put them in the freezer and freeze again

The researchers dissolved gelatin in deionized water at 70°C to obtain a 10% gelatin solution, which was then placed in a silicon mold and gelled overnight at 4°C

The researchers studied the mechanism of ice formation and thawing during freeze-thaw in detail, and found that the ice cubes treated with fast freezing and slow thawing still maintained a fairly uniform polymer network structure after multiple freeze-thaw cycles

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