Preheat oven to 350F
Grease and flour loaf pan.
In small bowl, stir together flour, baking soda, baking powder, cinnamon and nutmeg.
In a large bowl, stir together the egg whites, oil, brown sugar, apple and orange.
Add flour to apple mixture and stir until combined; pour into prepared pan.
Bake for 45-50 minutes or until a toothpick inserted near the centre comes out clean.
Cool in pan for 10 minutes; remove to wire rack.