i need the answer for a science project ... plz help
2007-10-11 04:23:27 · 6 answers · asked by hollywood2xoxo 1 in Food & Drink ➔ Other - Food & Drink
The air oxydizes them turning them brown. Put them in a bowl of water with a bit of lemon juice in it and they will keep their color.
2007-10-11 04:27:20 · answer #1 · answered by Jamie 3 · 1⤊ 0⤋
From the exposure to oxygen and bacteria. Its part of the decomposing process. Its beginning to rotten.
If you dip a cut apple into orange juice it will not turn brown for a long time. The citrus prevents the bacteria I guess it would be from growing as fast. Works great for small children's lunches. You really don't notice the orange juice other than slightly visual.
2007-10-11 11:59:13 · answer #2 · answered by savahna5 6 · 0⤊ 0⤋
The air hits them, causing them to turn brown. Add a little lemon juice to them, toss lightly, & they will be ready for baking or eating.
2007-10-11 11:32:00 · answer #3 · answered by Shortstuff13 7 · 0⤊ 0⤋
oxidization. you can stop it by putting them in salt water or lemon juice. what you doing removing the oxygen from the surface of the apple.
2007-10-11 11:35:59 · answer #4 · answered by specail ed 3 · 0⤊ 0⤋
FRESH CUT APPLES TURN BROWN WHEN IRON CONTAINING CHEMICALS INSIDE APPLE CELLS REACT WITH OXYGEN IN THE AIR. THE CHEMICAL REACTION IS CALLED 'OXIDATION' AND THE ENZYME THAT REGULATES OXIDATION IN APPLES IS CALLED 'POLYPHENOL OXIDASE (ppo) ALSO KNOWN AS 'TYROSINASE' I HOPE THIS WILL HELP YOU.
2007-10-11 11:55:06 · answer #5 · answered by LadyAnis 4 · 0⤊ 0⤋
its something to do with the sugar. google it
2007-10-11 11:50:47 · answer #6 · answered by Person;) 3 · 0⤊ 1⤋