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When an apple is cut (or bruised), oxygen is introduced into the injured plant tissue. When oxygen is present in cells, polyphenol oxidase (PPO) enzymes in the chloroplasts rapidly oxidize phenolic compounds naturally present in the apple tissues to o-quinones, colorless precursors to brown-colored secondary products. O-quinones then produce the well documented brown color by reacting to form compounds with amino acids or proteins, or they self-assemble to make polymers.
Wiki User
∙ 11y ago
Cathy Luciano-Laub
Wiki User
∙ 14y agoThis process is essentially oxidation . The apple itself houses iron containing chemicals that reacts with the air to form this brown layer. Peeling the apple exposes the aforementioned enzyme and acts as a catalyst for the process.
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Should you cook the apples before baking an apple pie?
Cooking apples before baking them in a pie is up to the cook. It can be done either way. Cooking or sauteing the apples before baking will make a softer apple filling. The apples will be crunchier if they are not cooked or sauteed before baking.
Are black apples real?
No, the Black Apples are a musical group. There are no black apples.
Why do walnut skins turn black when cooked in carrot cake?
It is a reaction to the baking soda.
Can you eat uncooked baking apples?
Yes, most uncooked baking apples would be safe to eat, unless they conatin un-cooked eggs already mixed in with them, or some other ingredient that would not be suitable for eating until after baking.
What is black pudding with apples?
black pudding is pigs blood with apples in it
What is the best apple to use for baking apple pies.?
Granny Smith apples are one of the best for baking.
What is apple pie eat?
Pie crust with sweetened apples on it after baking.
Do apple blossoms turn into apples?
Yes they do turn in to apples later on after all the petals fall off of the blooms .
How do you get three black snap apples?
u keep planting snap apples until you get a black one
How do you get 3 black snap apples?
get snap apples and hope for it to grow into a black one
Are rome apples good for apple pie?
Yes Rome apples are a great option for making apple pies. They are large and firm making them perfect for baking. Rome apples hold their shape well during baking so you can be sure your slices will stay put and not turn to mush. They also have a sweet-tart slightly spicy flavor that pairs nicely with all the other ingredients in an apple pie. Here are a few reasons why Rome apples are a great choice for making an apple pie: They have a firm texture They hold their shape during baking They have a sweet-tart flavor that complements other ingredientsRome apples are a great option for making a delicious apple pie. So go ahead and give them a try!
How much is 1 bag of baking powder equal?
Is this like comparing apples to oranges? I'd say like 6 apples.
