Intellectually Curious

Apples Turn Brown To Defend Themselves

Mike Breault

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0:00 | 4:10

Why do apples brown so fast? We dive into enzymatic browning: how broken cells unleash PPO on phenolics, forming ortho-quinones and melanin in a blink. Learn why lemon juice stops it, why some varieties stay white longer, and how this tiny plant battle hints at design and resilience. 


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