Fruit smoothies turning brown overnight in the fridge.
In: Chemistry
Have you ever left a cut apple, cut banana, or cut avocado in the fridge overnight? The cut surface of all those fruits turn brown not long after they are exposed to air too. In your fruit smoothie, you have fruit (or veggies) that are chopped REALLY small.
The reaction that takes place on the surface of fruit or veggies that have been exposed to air is called oxidation. Basically, there’s a chemical in the fruit that reacts with the oxygen in the air and turns brown.
Usually, acid will help slow down this process, so if you don’t want your smoothie to turn brown, try a little lemon juice or orange juice!
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