My daughter was peeling lots of oranges at our dining room table, which is oak with a formica/laminate top. Afterwards, we noticed that the formica tabletop had darkened in the area where she was peeling the oranges. The woodgrain is still visible, it is just darker than it used to be.

Did the citric acid in the oranges do this? Is there anything we can do to lighten up this darkened area?

Thanks so much for your advice!