How can I keep bananas from turning brown so quickly?
To keep the flesh of a peeled banana from turning brown, mist it or dip it in the juice of an acidic fruit such as lemon, lime, orange, or pineapple. There are also commercial preparations such as Ever-Fresh and Fruit-Fresh, which have a similar effect. Store bananas away from other fruits, as the ethylene gas given off affects ripening. Ripening can be halted by placing the banana in the refrigerator, but this will cause the skin to darken considerably. Please see http://www.samcooks.com/relish/bananas.html for lots more banana information.