I did an apple experiment too! My ginger ale apples turned the most brown though... what kind did you use? Also, I didn't seal mine in baggies because I was testing how well what I used would keep them from turning brown while exposed to air... so not really the same experiment, lol :)
Vitamin C prevents browning. So sloshing them with any juice with C in it will work great. I use apple juice, as it doesn't affect the flavor in a negative way, like lemon juice can. But Trader Joe's cinnamon-pear cider made them taste REALLY good. OJ was used once in a pinch, and wasn't too weird.