2007-01-16 08:44:35 · 6 answers · asked by Anonymous in Food & Drink ➔ Cooking & Recipes
OXIDATION
Fresh cut apples turn brown when iron-containing chemicals inside apple cells react with oxygen in the air. We see this every day when iron objects rust, or when scabs on cuts turn brown.
The chemical reaction is called "oxidation", and the enzyme that regulates oxidation in apples is called "polyphenol oxidase" (PPO), also known as "tyrosinase
2007-01-16 08:48:56 · answer #1 · answered by cmhurley64 6 · 1⤊ 0⤋
Chemistry here
Apples react to oxygen, but if you put in an acid such as lemon juice, they stay the same color.
2007-01-16 16:52:01 · answer #2 · answered by sugar_lover 2 · 0⤊ 0⤋
Oxidation. Sprinkling them with lemon juice cuts down on this.
2007-01-17 01:59:08 · answer #3 · answered by MeMe 2 · 0⤊ 0⤋
I dont know the answer, but you could try putting lime or lemon juice over them if they are cut up, this helps them hold their color longer....
2007-01-16 18:30:11 · answer #4 · answered by Anonymous · 0⤊ 0⤋
they react with the oxygen in the air, you can but something acidic such as lemon on them and they wont
2007-01-16 16:48:55 · answer #5 · answered by Nichole 2 · 0⤊ 0⤋
oxygen
2007-01-16 16:51:31 · answer #6 · answered by Juleette 6 · 0⤊ 0⤋