take an apple and cut it in half put lemon juice on one side and not the other. Then let it set and one side turns brown, but not the side with the lemon juice. That stayed fresh
2006-11-28 14:41:12 · 5 answers · asked by I love Gary 1 in Food & Drink ➔ Other - Food & Drink
the acid in the lemon v/s the acid in the apple
2006-11-28 14:42:59 · answer #1 · answered by Autumn 5 · 0⤊ 0⤋
It also works with most citrus juices (orange, grapefruit) and it's because of citric acid (vitamin c, ascorbic acid, whatever) and an acid is sold in powder to keep fruit from browning ("Fruit Fresh"?). I have to admit that I don't know how it works, but it must be acidity because vinegar (dilute acetic acid) also works. Cauliflower gets black spots and you can avoid that by putting a paper towel over the head of cauliflower and sprinkling vinegar on it. Different mechanism than the apple, though. The acidity inhibits mold growth, the cause of black spots on cauliflower.
2006-11-28 14:50:35 · answer #2 · answered by Anonymous · 0⤊ 0⤋
Because the lemon stops the apple from oxidizing with exposure to the air.
2006-11-29 08:03:56 · answer #3 · answered by COACH 5 · 0⤊ 0⤋
the acid keeps it from oxidizing
2006-11-28 14:55:57 · answer #4 · answered by Lynna H 1 · 0⤊ 0⤋
yes it works! you can also you 7 up or any other white soda
2006-11-28 14:43:55 · answer #5 · answered by Elizabeth S 2 · 0⤊ 0⤋