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Why Does Honey Never Spoil Even After Thousands of Years?
为什么蜂蜜即使存放数千年也不会变质？
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Archaeologists have found edible honey in ancient Egyptian tombs dating back over 3,000 years.
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Its low water content—usually under 18%—makes it too dry for most microbes to reproduce.
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Natural hydrogen peroxide forms slowly in honey when glucose oxidase enzyme reacts with oxygen and glucose.
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High acidity (pH 3.2–4.5) further inhibits bacterial and fungal growth inside sealed containers.
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Bees also fan nectar with wings to evaporate excess moisture before storing it in combs.
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Crystallization does not indicate spoilage but rather a natural physical change in sugar structure.
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Even if exposed briefly to air, honey resists contamination better than almost any other food.
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Its antimicrobial properties have been used historically for wound dressings and preservation.
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Modern labs confirm that spores of harmful bacteria like Clostridium botulinum cannot germinate in pure honey.
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However, infants under one year should never consume it because their immature guts lack protective acid barriers.