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    GlossaryTannic Acid (Tannin)

    polyphenol found in plants with astringent properties

    Tannic acid, also known as tannin, is a type of polyphenol found in various plants, including oak bark, tea leaves, and certain fruits. It has astringent properties, meaning it can contract and tighten tissues, which is why it's often used in medical applications to treat minor skin irritations and in the food industry to add flavor and preserve products.

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