Boiling potatoes causes water-soluble nutrients, such as vitamin C and potassium, to leach out ( 2 ). This results in slightly less nutritious potatoes. The longer you boil, the more nutrients are lost. Boiling potatoes in their skin helps to retain some of the water-soluble nutrients.
Does cooking potatoes remove vitamin C?
MYTH #2. MOST COOKING METHODS DESTROY THE NUTRIENTS IN POTATOES. While boiling potatoes does cause a small loss of water-soluble nutrients like vitamin C and vitamin B6, the white potato retains most, if not all, of its potassium and dietary fiber regardless of cooking method, such as baking, boiling, or frying.
Why does cooked potato have less vitamin C?
Reasons for Losses Vitamin C and the B vitamins are water-soluble, which means that if you soak your potatoes in water or boil them, some of the vitamins may leach out into the water.
Does vitamin C break down when cooked?
Vitamin C can be destroyed by heat and light. High-heat cooking temperatures or prolonged cook times can break down the vitamin. Because it is water-soluble, the vitamin can also seep into cooking liquid and be lost if the liquids are not eaten.
How do you keep vitamin C in potatoes?
Steaming and microwaving retained higher concentrations of vitamin C than boiling because of the reduced contact with water at relatively low temperatures. Using minimal cooking water and cooking for shorter time periods should result in higher vitamin C retention.
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