Study on enzyme inactivation by microwave and extraction of rice bran oil

The enzyme inactivation by industrial continuous microwave processing equipment and rice bran oil extraction process of rice bran were studied. According to the change of the index of free fatty acids,the effect of microwave radiating on the lipase of rice bran was studied. The results showed that the best conditions were using thickness of 0.9cm by microwave for 4min and it could deal with 36kg of rice bran per hour. And the best conditions to extract rice bran oil were:extraction temperature 55℃,extraction time 2h,ratio of stuff to solvent 1:6. Under this condition,rice bran oil yield reached 90.04% and oil rate was obviously improved.