GrainGenes Reference Report: IFT-30-609
Reference
IFT-30-609
Title
Mechanical strength and rheological behaviour of barley kernels
Journal
International Journal of Food Science and Technology
Year
1995
Volume
30
Pages
609-623
Author
Bargale P Irudayaraj J
Abstract
Basic mechanical and rheological properties (stress relaxation behaviour) of single barley kernels under uni-axial compression were studied The mechanical properties studied were the modulus of elasticity, yield and ultimate compressive strength, and the modulus of toughness as influenced by the moisture content The stress relaxation experiments also included the effect of deformation rates and strain levels Results indicated that with an increase in moisture content, the strength of the barley kernels decreased while the energy required to cause rupture in the kernel increased initially and then decreased The stress relaxation behaviour of barley kernels was described by a three-term Maxwell model with a Maximum Relative Difference (MRD) less than or equal to 5%, when compared with one- and two-term Maxwell models The elastic component (E1) and relaxation time constant (tau 1) of the first term of the three-term Maxwell model decreased linearly with increase in moisture content Of the different variables studied, moisture content had a significant influence on both of these parameters.
Keyword
[ Hide all but 1 of 12 ] barley breaking-strength compressive-strength deformation equations kernels mathematical-models modulus-of-elasticity moisture-content strain stresses toughness
GrainGenes is a product of the Agricultural Research Service of the US Department of Agriculture.
GrainGenes Reference Report: IFT-30-609
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GrainGenes is a product of the Agricultural Research Service of the US Department of Agriculture. | |||