why apple become black after we cut?
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Explanation:
applw when come in contact with oxygen it get rusted because of presence of iron in apple.
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WHEN AN APPLE IS CUT INTO PIECES, THE PLANT TISSUE IS EXPOSED TO OXYGEN. THIS TRIGGERS AN ENZYME KNOWN AS POLYPHENOL OXIDASE TO WAIT FOR IT OXIDISE POLYPHENOLS IN APPLE'S FLESH. ENZYMATIC BROWNING IS NOT UNIQUE TO APPLES. PEARS, BANANAS AND EGGPLANTS ALSO TURN BLACK FAIRLY QUICKLY WHEN CUT.
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