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Why do apple slices turn brown after being cut? - Scientific American

www.scientificamerican.com/article/experts-why-cut-apples-turn-brown/

When an apple is cut (or bruised), oxygen is introduced into the injured plant tissue. ... and the lower pH that they bring about causes PPO to become less active.

Why Do Apples Turn Brown? Experiment | Education.com

www.education.com/science-fair/article/stop-cut-fruits-vegetables-turning-brown/

Sep 11, 2013 ... In this fun science project, learn about what happens to cut fruit and experiment with how to stop apples from turning brown.

Everyday Chemistry - Why do cut apples turn brown?

humantouchofchemistry.com/why-do-cut-apples-turn-brown.htm

When you come back to your apple, it's gone brown all over. What happened? ... But it may cause some vitamins to leach into the water. Rub the cut apples with ...

Curiosities: Why do apple slices turn brown?

news.wisc.edu/curiosities-why-do-apple-slices-turn-brown/

Oct 20, 2008 ... The moment a knife slices through apple—spilling the contents of apple cells along the surface of the cut, and allowing everything to mix—a ...

What factors affect the oxidation of apples? | SEP LESSONS

www.seplessons.org/node/1690

Apples and other fruit turn brown once the cut surface is exposed to air due to a ... Students observe the browning of apples after cut and being exposed to air and brainstorm ideas about why this might be happening. .... Cause and Effect ...

www.ask.com/youtube?q=Causes Apples to Brown&v=gbArE5dv0W4
Jul 9, 2014 ... Brownies are brown because god said so. apples turn brown because ... Quick question: What causes the tingling sensation in your arm or legs ...

Why the Insides of Apples Turn Brown When Exposed to Air

www.todayifoundout.com/index.php/2014/04/insides-apples-turn-brown-exposed-air/

Apr 15, 2014 ... The insides of apples turn brown when exposed to air thanks to a built in defense mechanism against bacteria and fungus. The trigger for this is ...

Why Apples Turn Brown - Decoding Delicious

www.decodingdelicious.com/why-apples-turn-brown/

Jan 21, 2013 ... The good news is that a brown apple is perfectly safe to eat. The bad news is that it's ugly. The cause is enzymatic browning, a molecular ...

Why do apples and potatoes turn brown when you slice them ...

recipes.howstuffworks.com/question168.htm

The enzyme then has access to oxygen in the air and it does its thing, turning the fruit brown. This is the same thing that causes brown spots in apples when you ...

www.ask.com/youtube?q=Causes Apples to Brown&v=IsXgoYL8YIo
Sep 23, 2013 ... Check out this episode to learn which enzymes cause apples to t... ... which enzymes cause apples to turn brown upon exposure to oxygen.
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Why Does Your Apple Turn Brown, and How Can You Stop It?

io9.gizmodo.com

Jul 15, 2014 ... Why do apples try so hard to foil your quest for vitamins? ... American, Why Do Cut Apples Turn Brown, Polyphenol Oxidase Causes Browning.

Why do apples turn brown when you cut them? - UCSB Science Line

scienceline.ucsb.edu

Remember these yummy apple pies with brown apples on top? Apples turn brown when exposed to air because of the oxidation process that goes on when the ...

Why Cut Apples Turn Brown - Chemistry - About.com

chemistry.about.com

Learn why apples, pears, bananas, potatoes, and other fruits and vegetables turn brown when they are cut or damaged.