Fresh rice brans stored for different periods were used as raw materials to prepare rice bran albumin after defatting, and the effects of storage time on the functional properties of rice bran albumin were investigated. The results indicated that with storage time prolonging, carbonyl content of rice bran albumin increased, which indicated that the storage of rice bran led to oxidation of rice bran albumin. As storage time and oxidation degree of rice bran albumin increased, the solubility, water holding capacity, foamability, foam stability and emulsifying activity of rice bran albumin decreased, while the oil holding capacity and emulsion stability of rice bran albumin first slowly increased then apparently decreased. The results demonstrated that short term storage of rice bran could improve part functional properties of rice bran albumin, while long term storage would cause functional properties of rice bran albumin to decline significantly. |