Abstract: The paper adopted the theory of solubization and acid precipitation to extract the separate protein from oats material. And the paper studied the factors of solid/liquid, solubization dosage, time and temperature. The conclusion showed that the best extraction condition is that: the ratio of solid/liquid is 1:25, the solution pH10, the extraction time 45min, and the temperature 40℃. And the separate protein’s spray drying condition is that: the in-temperature 90℃, the off-temperature 57℃, and the water-soluble oats protein content can reach 34%.

Key words: oats, separate protein, extraction