The twin-screw puffed corn flour is a kind of feed source material with high utilization rate obtained by crushing raw corn, mixing with a certain proportion of water, and then undergoing a puffing process.
Under the condition of high temperature and high pressure, puffed corn flour continuously absorbs energy and vaporizes the moisture contained in the corn kernels, and forcibly penetrates and cuts into the corn molecules. Before reaching the homogenization section, the corn flour gradually changes from solid to viscous flow. The viscous zein molecule continues its protein denaturation process in the homogenization section, and is continuously extruded continuously. When encountering a sudden cooling, the water molecule squeezed into the protein molecule expands rapidly, vaporizes, and "explodes". The material surrounding it completes the final denaturation process, and at the same time makes the product form a loose material with numerous micropores-puffed corn strips, which will become puffed corn flour after natural cooling and crushing. Puffed corn flour is a light yellow, crystalline flashing microporous powder with roasted aroma.
The effect of puffed corn flour in feed processing is adhesion. For example, fish feed or other feeds used in aquaculture are usually added with puffed corn flour. Because puffed corn flour has better adhesion and foam resistance in water, the price of good quality puffed corn flour in aquaculture Higher.