• Question: why is it when mammy peels an apple for my lunch it goes black by lunchtime

    Asked by Thomas L to Ciara, Elaine, Golnaz, Gonzalo, Yannis, Yvonne on 8 Nov 2017.
    • Photo: Ciara O'Donovan

      Ciara O'Donovan answered on 8 Nov 2017:

      This is because an enzyme in the apple reacts with the air and causes it to turn brown. This can be stopped by squeezing a little bit of orange juice on the apple after it is cut.

    • Photo: Gonzalo Delgado-Pando

      Gonzalo Delgado-Pando answered on 8 Nov 2017:

      When your mum cuts the apple this enzyme that Ciara says (is a substance) gets out (it was inside the apple) and oxidise (like the oxide in some iron tubes when let outside) the apple when in contact with the air

    • Photo: Ioannis Zabetakis

      Ioannis Zabetakis answered on 8 Nov 2017:

      well explained Ciara and Gonzalo.

      tip: ask Mammy to wrap it tightly in cling film, this will stop the oxygen get in touch with the apple and it will remain fresh ! no need for orange juice, Ciara 🙂

Comments