Mechanical properties of sound and fissured rice kernels and their implications for rice breakage

摘要: Mechanical properties of brown rice kernels that were thin-layer dried at 60 °C and 17% relative humidity for 0, 10, 30, 50, 70, 90 120 min measured by three-point bending tests after cooled to room temperature. The apparent modulus elasticity, strength, fracture energy the sound increased with longer drying, while same fissured smaller than those kernels, especially strength energy. This explains why are much easier break during milling. finding decreased drying indicated fissures either created or propagated process, which weakened as proceeded. Results mechanical on different durations would not be affected loss broken kernels.