2006-10-26 00:40:55 · 8 answers · asked by nunya 1 in Science & Mathematics ➔ Other - Science
It's caused by an enzyme called polyphenol oxidase, also known as tyrosinase.
Some varieties, such a Golden Delicious, have had this enzyme bred out of them, so that they look better in the shops.
2006-10-26 00:48:59 · answer #1 · answered by Anonymous · 0⤊ 0⤋
the air oxidizes the fruit causing it to change color
2006-10-26 07:49:11 · answer #2 · answered by Magick Kitty 7 · 0⤊ 0⤋
The answer about enzymatic spoilage is correct - it is NOT oxidation
2006-10-26 07:50:15 · answer #3 · answered by Anonymous · 0⤊ 0⤋
this is caused by free rads or oxygen atoms. they react with the flesh , helped by enzymes
2006-10-26 10:24:36 · answer #4 · answered by einstein4j 2 · 0⤊ 0⤋
it oxidised due to presence of oxygen in the air.
can prevent or slow it by using lemon juice..
2006-10-26 10:58:48 · answer #5 · answered by smelly_ducks 2 · 0⤊ 0⤋
When its iron content comes in contact with air, it changes colour...............
2006-10-26 08:26:39 · answer #6 · answered by apurva 2 · 0⤊ 0⤋
yes.
2006-10-26 07:46:33 · answer #7 · answered by JohnSyd 2 · 0⤊ 0⤋
......................... oxidation .................
2006-10-26 07:49:01 · answer #8 · answered by spaceman 5 · 0⤊ 0⤋