Submerge in coconut water

Submerging your avocado in coconut water is another technique to prevent it from turning brown. In addition to minimizing oxygen exposure, the antioxidant component of coconut water appears to contribute to the delay of the enzymatic reaction of PPO.

To avoid losing its firmness and turning mushy, you might not want to soak your avocado in water for a long period of time. When you just need to keep an avocado overnight, this method could be helpful. Or much easier, avocados can be soaked in water and stored in a refrigerator. If you have a lot of avocados to use quickly or are leaving brand-new avocados behind while you're away for a week, this will help keep them fresh.