The invention provides an oat source composition, and belongs to the field of
biology, the oat source composition comprises 10-50 parts by weight of a first water phase, 20-100 parts by weight of a second water phase, and 5-40 parts by weight of an
oil phase, the first water phase comprises the following raw materials by weight: 0.1-10 parts by weight of oat
protein, and 20-50 parts by weight of water; the second water phase comprises the following components in parts by weight: 0.1-5 parts of an
antioxidant and 20-50 parts of water, and the
oil phase comprises the following components in parts by weight: 0.1-20 parts of a
benzoquinone fat-soluble compound and 10-50 parts of compound
grease; the preparation method comprises the following steps: S1, adding a first water phase into an
oil phase, stirring until the
system is uniform, and keeping the temperature at 30-60 DEG C for 0.5-6 hours, so as to obtain an oat
protein microemulsion; and S2, adding the oat
protein microemulsion into the second water phase, and carrying out homogenization treatment to obtain the oat source composition. The first water phase, the second water phase and the oil phase are utilized to form the
microemulsion, the oat protein is arranged in the first water phase on the innermost layer, and the preservation of the oat protein is realized by utilizing the isolation property of the microemulsion.