Effects of moisture, temperature and level of pea grits on extrusion behaviour and product characteristics of rice

A study was conducted to investigate the effect of feed moisture (18–24%), extrusion temperature (130–170 °C) and level of pea grits (0–30%) on the extrusion behaviour and extrudate properties of rice grits. The extruder die pressure, specific energy consumption, expansion ratio, density, water absorption index, and water solubility index were studied. Second-order polynomials were compared for extruder parameters and product characteristics as a function of feed moisture, extrusion temperature and pea grit level.