<prompt> White polished rice causes deficiency of:ThiamineTryptophanRiboflavinProtein  <response>: Thiamine loss occur in: Polishing of rice, Milling of rice, Washingcooking of rice, Toast, Cereals cooked with baking soda, Prolonged storage of fruits vegetables. Beriberi is caused by a pronounced deficiency of anti-neuritic vitaminvitamin B1or Thiamine, which is required for utilization of carbohydrates. Up to 80 percent of Thiamine B1 vitamin is removed during the process of milling brown rice to white polished rice. Parboiling paial cooking in steam is ancient Indian technique of preserving the nutritive quality of rice. During the steaming process, a greater pa of the vitamins and minerals present in the outer aleurone layer of the rice grain are driven into the inner endosperm. With subsequent milling, even to a high degree, the nutrients are not removed. 