This invention discloses a method and apparatus for preparing low-fat, low-
calorie health-promoting soy products. The method includes selecting high-quality soybeans, peeling them,
defatting them under low-temperature negative pressure, soaking them in water and draining them, then finely
grinding and filtering them to obtain soybean pulp. Compound
dietary fiber,
plant polysaccharides, and other auxiliary materials are added according to a formula and mixed with pure water. The mixture is then subjected to gradient constant
temperature conditioning, negative pressure degassing, and finally
pasteurization at low temperature. After cooling, it is filled and molded to obtain low-fat, low-
calorie health-promoting soy products. The apparatus includes a
defatting tank, a stirring
assembly, and a lifting
assembly. The
defatting tank is equipped with a
temperature control device, a negative pressure pump, a feed inlet, and an oil drain
pipe with a
solenoid valve. A lifting plate is installed inside the tank, and a diversion
pipe and a
drying pipe are installed at the top. The stirring
assembly consists of a rotating shaft, a stirring plate, and a driving component. The lifting assembly moves the lifting plate up and down through a lifting cylinder, a sleeve, and a connecting frame. A low-temperature negative pressure precision defatting process is used to significantly reduce the
fat content of soybeans from the
raw material end.