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What unique chemical property allows pure honey to remain edible for thousands of years without spoiling?

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Correct answer: Extremely low moisture content and high acidity

Honey is a natural marvel of preservation due to its low water content and acidic pH, which create an incredibly hostile environment for bacteria and fungi. Bees also add an enzyme called glucose oxidase, which produces hydrogen peroxide, a natural sterilizer. Archaeologists have actually found pots of honey in ancient Egyptian tombs that are still perfectly edible! Photo: Scott Bauer, USDA ARS, Wikimedia Commons, Public domain.

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Source: Wikipedia (CC BY-SA)

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