White rice is obtained by milling further to remove the rice bran. This leaves the rice with a soft texture, which reduces cooking time. Place several pieces of rough rice on one mouse pad or rubber piece and lay the second mouse pad or piece of rubber on top. Rub the two pieces back and forth until all of the hulls are removed from the rice kernels. Rice hulls are often burned in biomass plants to produce energy or incorporated into animal feed.
Brown rice is packaged and sold.
Place several kernels of brown rice on the sandpaper and lay the second piece of sandpaper on top. Rub the two sheets of sandpaper together for 3-5 minutes. The powdery residue left on the sandpaper is the rice bran. Rice bran is used as an additive in several different food products.