Preheat oven to 350 degrees. Line a 9X5 inch loaf pan with parchment paper.
Stir together chopped apples, lemon juice, brown sugar, and cinnamon.
In another large bowl cream together butter & sugar until light and fluffy using a mixer. Add eggs & vanilla, beat until smooth. Then add flour, baking powder, & orange juice and mix until just combined.
Add half the batter to the prepared loaf pan, then press in half the apple mixture. Top with the remaining batter, then press remaining apple mixture on top.
Bake about 1 hour 5 minutes, or until loaf is golden and a toothpick inserted into the center comes out clean. Let cool completely.