After peeled or grated potatoes are exposed to air they will begin to turn gray or brown. This appearance can be off-putting, but the good news is that the quality of the potato isn't compromised. This is a harmless natural reaction and it is perfectly fine to cook and eat potatoes even if they have turned gray. 18 авг. 2019 г.
Why do raw potatoes turn brown?
Why Do Potatoes Turn Brown? As soon as you leave out peeled or cut potatoes, the oxidation process begins and the potatoes turn brown. Oxidation is a chemical reaction between the starches and sugars in the potato and the air that does not impact the edibility of the potato but does change its color.
What happens when potatoes turn brown?
Starch is the problem Potatoes brown quickly when exposed to fresh air because they are jam-packed with starch. When these starches are exposed to oxygen, they undergo a process called oxidation, which leaves your potato with a grayish or brownish tint. They're 100% edible, but instantly less appetizing.
How can you tell if brown potatoes are bad?
Russet potatoes, like all other potatoes, are bad if they are soft, mushy, smell moldy, are shriveled/wrinkled, or have long sprouts.
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