Preheat the oven to 350 degrees.

In a small bowl, combine flour, baking soda and baking powder. Set aside.

Using a stand mixer or handheld mixer, beat the egg whites until they are frothy. Mix in the yogurt, oil, milk, orange juice concentrate, zest and honey just until combined. Be sure to scrape the bottom of the bowl, as the honey will settle to the bottom.

Add 1/2 the dry ingredients to the wet ingredients. Use a rubber spatula to gently fold the ingredients together a few times. Then add the rest of the dry ingredients. Fold gently just until the mixture is combined. There may be still a few lumps of flour and that is OK. Don't overmix!

Spray a 9x5 bread pan with cooking spray and then put a light coating of flour on the bottom and sides of the pan. Spoon the batter gently into the pan.

Bake for 30 minutes at 350 degees. Cover the bread with aluminum foil and bake for an additional 10 minutes, or until a toothpick inserted in the center comes out clean.

Allow the bread to cool for 5 minutes, then turn the loaf out onto a cooling rack.