Also I am freezing them for later use. They are green apples and using them to make baby food.
Cooked apples will turn brown. Oxidation and all that. Very natural. I don't understand what turning brown has to do with baby food?
I was just letting you know what I was doing with the food. that is all
Ah! Ok. Lemon juice or citric acid can prevent some browning, but I don't know how effective that will be since you'll be cooking the apples. Brown applesauce will still be delicious and that is one very lucky baby who gets to enjoy homemade applesauce!
Robyn, not sure the soaking will do anything, but rather than add citric acid or anything else, I would just not worry about it. It won't be gross brown, it just won't be Gerber white/yellow. As Garlic Fiend said..lucky baby. :)