Method for preparing linseed food product from linseed

A method for preparing a linseed food product from linseed, comprising the following steps:

• S1:
• conducting linseed pulverizing, which comprises:
• washing the linseed, pressing oil from washed linseed using an oil press, obtaining an oil-pressed linseed cake, and pulverizing the linseed cake into powder,
• S2:
• conducting dissolving and adding ammonium sulfate to precipitate proteins, which comprises:
• dissolving the powder obtained in step S1 with water, and stirring continuously during the dissolving to obtain a solution containing insoluble portions of the powder;
• conducting filtration on the solution to remove the insoluble portions of the powder in the solution, resulting in a filtered solution;
• and
• adding the ammonium sulfate into the filtered solution to precipitate proteins, such that proteins are precipitated to form a protein layer at a bottom of a vessel containing the filtered solution,
• S3:
• conducting protein separation, which comprises:
• directly discarding a supernatant liquid of the solution contained in the vessel, until a liquid level of a remaining solution is 2 cm to 3 cm away from the protein layer at the bottom, and transferring the remaining solution and the protein layer into a centrifuge, and conducting centrifugation to obtain a separated protein layer,
• S4:
• adding flour, starch, white granulated sugar, and egg white to the separated protein layer, and conducting kneading and molding, which comprise:
• adding the flour, the starch, the white granulated sugar, and the egg white into the separated protein layer obtained in step S3, adding water into an obtained mixture and kneading to form a dough, and pressing the dough into a desired shape by a molding die to obtain a molded uncooked dough;
• and
• S5:
• conducting frying and dehydration, which comprise:
• cooking oil until an oil temperature is 140° C. to 160° C., and frying the molded uncooked dough in the oil for 2 min to 6 min;
• taking out an obtained molded fried dough, and drying the obtained molded fried dough to obtain a semi-finished product, and baking the semi-finished product in an oven at 200° C. for 8 min to 15 min to obtain a finished linseed food product.