The invention discloses a sustained release
composite material and a method for
salting Siji geese. The sustained release
composite material is prepared from, by weight parts, 40-50 parts of modified
food grade bentonite, 20-30 parts of
food grade diatomaceous earth, 12-14 parts of
food grade silica gel, 8-10 parts of food grade
polyethylene glycol, 7-9 parts of food grade
polyvinylpyrrolidone and 3-5 parts of food grade land plaster. A method for preparing the modified food grade
bentonite comprises the steps of first smashing the food grade
bentonite to 200-300 meshes,
drying the food grade bentonite for 2-3 h at 250-350 DEG C to perform activation, and spraying
citric acid aqueous solution while overturning the food grade bentonite, wherein the
mass percentage of
citric acid in the
citric acid aqueous solution is 50-60%; and correspondingly spraying 70-90 mg of citric acid for 1 g of food grade bentonite; and after the spraying, performing
drying for 1-2 h at 90-100 DEG C. The sustained release
composite material can slowly release salt, the
meal can be made mellow, it is guaranteed that the inner layer meat is salted thoroughly, outer layer meat is not made too high in
salinity, and the Siji geese salted by using the sustained release composite material are tender in meat quality and moderate and uniform in
salinity.