Pineapples has proteins that degrade meat. Many people who work in pineapple plantations have obscured or removed fingerprints.

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  1. John Walker

    December 13, 2013 at 3:55 pm

    It was once thought that bromelain (the protein you are referring to in pineapples) exposure gradually erased fingerprints, but this isn’t true. Unless the finger itself is essentially destroyed through severe burning, for example, your fingerprint will always return after a hand injury.

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