2007-02-27 20:47:53 · 2 answers · asked by Anonymous in Science & Mathematics ➔ Chemistry
The same reason why an exposed surface of a cut apple becomes brown. The exposed surface of the brinjal is oxidised and becomes black in colour. The pear is another fruit that exhibits this property.
2007-02-27 20:57:45 · answer #1 · answered by aravind 2 · 1⤊ 0⤋
It is similar to alot of substances when they are exposed to the atmosphere.
They react with the Oxygen in the air and become Oxygenated - Aluminium is a good example, where as soon as you cut it, it actually looks very shiny, but becomes dull very quickly as an oxidised layer forms on the surface i.e. Aluminium Oxide (AlO2).
I would postulate that this is what is happening with your Brinzal - even though I don't know much about that particular substance.
2007-02-27 20:57:26 · answer #2 · answered by Doctor Q 6 · 1⤊ 0⤋