Why do avocados turn brown so fast, and how to keep them fresh |
There’s nothing more frustrating than slicing into a perfectly ripe avocado only to watch it turn brown within minutes. That sudden discoloration is not a sign that your avocado is spoiled. It is a natural chemical reaction called enzymatic browning. When the flesh is exposed to oxygen, an enzyme called polyphenol oxidase (PPO) reacts with…